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  • 1
    Publikationsdatum: 2016-07-07
    Beschreibung: Author(s): Hui Wang, S. T. Pi, J. Kim, Z. Wang, H. H. Fu, and R. Q. Wu Two-dimensional quantum spin Hall (QSH) insulators with reasonably wide band gaps are imperative for the development of various innovative technologies. Through systematic density functional calculations and tight-binding simulations, we found that stanene on an α -alumina surface may possess a sizea… [Phys. Rev. B 94, 035112] Published Wed Jul 06, 2016
    Schlagwort(e): Electronic structure and strongly correlated systems
    Print ISSN: 1098-0121
    Digitale ISSN: 1095-3795
    Thema: Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 2
    Publikationsdatum: 2016-06-14
    Beschreibung: Author(s): C. X. Trang, Z. Wang, D. Takane, K. Nakayama, S. Souma, T. Sato, T. Takahashi, A. A. Taskin, and Yoichi Ando We have performed angle-resolved photoemission spectroscopy on Tl 0.5 Bi 2 Te 3 , a possible topological superconductor derived from Bi 2 Te 3 . We found that the bulk Fermi surface consists of multiple three-dimensional hole pockets surrounding the Z point, produced by the direct hole doping into the valence… [Phys. Rev. B 93, 241103(R)] Published Mon Jun 13, 2016
    Schlagwort(e): Electronic structure and strongly correlated systems
    Print ISSN: 1098-0121
    Digitale ISSN: 1095-3795
    Thema: Physik
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  • 3
    Publikationsdatum: 2015-10-13
    Beschreibung: Inositol-1,4,5-trisphosphate receptors (InsP3Rs) are ubiquitous ion channels responsible for cytosolic Ca(2+) signalling and essential for a broad array of cellular processes ranging from contraction to secretion, and from proliferation to cell death. Despite decades of research on InsP3Rs, a mechanistic understanding of their structure-function relationship is lacking. Here we present the first, to our knowledge, near-atomic (4.7 A) resolution electron cryomicroscopy structure of the tetrameric mammalian type 1 InsP3R channel in its apo-state. At this resolution, we are able to trace unambiguously approximately 85% of the protein backbone, allowing us to identify the structural elements involved in gating and modulation of this 1.3-megadalton channel. Although the central Ca(2+)-conduction pathway is similar to other ion channels, including the closely related ryanodine receptor, the cytosolic carboxy termini are uniquely arranged in a left-handed alpha-helical bundle, directly interacting with the amino-terminal domains of adjacent subunits. This configuration suggests a molecular mechanism for allosteric regulation of channel gating by intracellular signals.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fan, Guizhen -- Baker, Matthew L -- Wang, Zhao -- Baker, Mariah R -- Sinyagovskiy, Pavel A -- Chiu, Wah -- Ludtke, Steven J -- Serysheva, Irina I -- P41 GM103832/GM/NIGMS NIH HHS/ -- P41GM103832/GM/NIGMS NIH HHS/ -- R01 GM072804/GM/NIGMS NIH HHS/ -- R01 GM079429/GM/NIGMS NIH HHS/ -- R01 GM080139/GM/NIGMS NIH HHS/ -- R01GM072804/GM/NIGMS NIH HHS/ -- R01GM079429/GM/NIGMS NIH HHS/ -- R01GM080139/GM/NIGMS NIH HHS/ -- R21 AR063255/AR/NIAMS NIH HHS/ -- R21 GM100229/GM/NIGMS NIH HHS/ -- R21AR063255/AR/NIAMS NIH HHS/ -- R21GM100229/GM/NIGMS NIH HHS/ -- S10 OD016279/OD/NIH HHS/ -- S10OD016279/OD/NIH HHS/ -- England -- Nature. 2015 Nov 19;527(7578):336-41. doi: 10.1038/nature15249. Epub 2015 Oct 12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Molecular Biology, Structural Biology Imaging Center, The University of Texas Medical School at Houston, 6431 Fannin Street, Houston, Texas 77030, USA. ; National Center for Macromolecular Imaging, Verna and Marrs McLean Department of Biochemistry and Molecular Biology, Baylor College of Medicine, One Baylor Plaza, Houston, Texas 77030, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26458101" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Allosteric Regulation ; Animals ; Apoproteins/chemistry/metabolism/ultrastructure ; Calcium/metabolism ; Calcium Signaling ; *Cryoelectron Microscopy ; Cytosol/chemistry/metabolism ; Inositol 1,4,5-Trisphosphate Receptors/chemistry/*metabolism/*ultrastructure ; Ion Channel Gating ; Models, Molecular ; Protein Folding ; Protein Structure, Quaternary ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Protein Subunits/chemistry/metabolism ; Rats ; Ryanodine Receptor Calcium Release Channel/chemistry/metabolism
    Print ISSN: 0028-0836
    Digitale ISSN: 1476-4687
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 4
    Publikationsdatum: 2015-05-02
    Beschreibung: Werner syndrome (WS) is a premature aging disorder caused by WRN protein deficiency. Here, we report on the generation of a human WS model in human embryonic stem cells (ESCs). Differentiation of WRN-null ESCs to mesenchymal stem cells (MSCs) recapitulates features of premature cellular aging, a global loss of H3K9me3, and changes in heterochromatin architecture. We show that WRN associates with heterochromatin proteins SUV39H1 and HP1alpha and nuclear lamina-heterochromatin anchoring protein LAP2beta. Targeted knock-in of catalytically inactive SUV39H1 in wild-type MSCs recapitulates accelerated cellular senescence, resembling WRN-deficient MSCs. Moreover, decrease in WRN and heterochromatin marks are detected in MSCs from older individuals. Our observations uncover a role for WRN in maintaining heterochromatin stability and highlight heterochromatin disorganization as a potential determinant of human aging.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4494668/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4494668/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhang, Weiqi -- Li, Jingyi -- Suzuki, Keiichiro -- Qu, Jing -- Wang, Ping -- Zhou, Junzhi -- Liu, Xiaomeng -- Ren, Ruotong -- Xu, Xiuling -- Ocampo, Alejandro -- Yuan, Tingting -- Yang, Jiping -- Li, Ying -- Shi, Liang -- Guan, Dee -- Pan, Huize -- Duan, Shunlei -- Ding, Zhichao -- Li, Mo -- Yi, Fei -- Bai, Ruijun -- Wang, Yayu -- Chen, Chang -- Yang, Fuquan -- Li, Xiaoyu -- Wang, Zimei -- Aizawa, Emi -- Goebl, April -- Soligalla, Rupa Devi -- Reddy, Pradeep -- Esteban, Concepcion Rodriguez -- Tang, Fuchou -- Liu, Guang-Hui -- Belmonte, Juan Carlos Izpisua -- F32 AG047770/AG/NIA NIH HHS/ -- New York, N.Y. -- Science. 2015 Jun 5;348(6239):1160-3. doi: 10.1126/science.aaa1356. Epub 2015 Apr 30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China. ; Biodynamic Optical Imaging Center, College of Life Sciences, Peking University, Beijing 100871, China. ; Gene Expression Laboratory, Salk Institute for Biological Studies, 10010 North Torrey Pines Road, La Jolla, CA 92037, USA. ; State Key Laboratory of Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China. ; Diagnosis and Treatment Center for Oral Disease, the 306th Hospital of the PLA, Beijing, China. ; Department of Molecular and Cellular Physiology, Stanford University School of Medicine, Stanford, CA 94305, USA. ; College of Life Sciences, Peking University, Beijing 100871, China. ; The Center for Anti-aging and Regenerative Medicine, Shenzhen University, Shenzhen 518060, China. ; Gene Expression Laboratory, Salk Institute for Biological Studies, 10010 North Torrey Pines Road, La Jolla, CA 92037, USA. Universidad Catolica San Antonio de Murcia, Campus de los Jeronimos s/n, 30107 Guadalupe, Murcia, Spain. ; Biodynamic Optical Imaging Center, College of Life Sciences, Peking University, Beijing 100871, China. Ministry of Education Key Laboratory of Cell Proliferation and Differentiation, Beijing 100871, China. Center for Molecular and Translational Medicine (CMTM), Beijing 100101, China. Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China. ghliu@ibp.ac.cn tangfuchou@pku.edu.cn belmonte@salk.edu. ; National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China. The Center for Anti-aging and Regenerative Medicine, Shenzhen University, Shenzhen 518060, China. Center for Molecular and Translational Medicine (CMTM), Beijing 100101, China. Beijing Institute for Brain Disorders, Beijing 100069, China. ghliu@ibp.ac.cn tangfuchou@pku.edu.cn belmonte@salk.edu. ; Gene Expression Laboratory, Salk Institute for Biological Studies, 10010 North Torrey Pines Road, La Jolla, CA 92037, USA. ghliu@ibp.ac.cn tangfuchou@pku.edu.cn belmonte@salk.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25931448" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Aging/genetics/*metabolism ; Animals ; *Cell Aging ; Cell Differentiation ; Centromere/metabolism ; Chromosomal Proteins, Non-Histone/metabolism ; DNA-Binding Proteins/metabolism ; Epigenesis, Genetic ; Exodeoxyribonucleases/genetics/*metabolism ; Gene Knockout Techniques ; HEK293 Cells ; Heterochromatin/chemistry/*metabolism ; Humans ; Membrane Proteins/metabolism ; Mesenchymal Stromal Cells/*metabolism ; Methyltransferases/genetics/metabolism ; Mice ; Models, Biological ; RecQ Helicases/genetics/*metabolism ; Repressor Proteins/genetics/metabolism ; Werner Syndrome/genetics/*metabolism
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 5
    Publikationsdatum: 2015-06-13
    Beschreibung: Agents that promote tissue regeneration could be beneficial in a variety of clinical settings, such as stimulating recovery of the hematopoietic system after bone marrow transplantation. Prostaglandin PGE2, a lipid signaling molecule that supports expansion of several types of tissue stem cells, is a candidate therapeutic target for promoting tissue regeneration in vivo. Here, we show that inhibition of 15-hydroxyprostaglandin dehydrogenase (15-PGDH), a prostaglandin-degrading enzyme, potentiates tissue regeneration in multiple organs in mice. In a chemical screen, we identify a small-molecule inhibitor of 15-PGDH (SW033291) that increases prostaglandin PGE2 levels in bone marrow and other tissues. SW033291 accelerates hematopoietic recovery in mice receiving a bone marrow transplant. The same compound also promotes tissue regeneration in mouse models of colon and liver injury. Tissues from 15-PGDH knockout mice demonstrate similar increased regenerative capacity. Thus, 15-PGDH inhibition may be a valuable therapeutic strategy for tissue regeneration in diverse clinical contexts.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4481126/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4481126/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhang, Yongyou -- Desai, Amar -- Yang, Sung Yeun -- Bae, Ki Beom -- Antczak, Monika I -- Fink, Stephen P -- Tiwari, Shruti -- Willis, Joseph E -- Williams, Noelle S -- Dawson, Dawn M -- Wald, David -- Chen, Wei-Dong -- Wang, Zhenghe -- Kasturi, Lakshmi -- Larusch, Gretchen A -- He, Lucy -- Cominelli, Fabio -- Di Martino, Luca -- Djuric, Zora -- Milne, Ginger L -- Chance, Mark -- Sanabria, Juan -- Dealwis, Chris -- Mikkola, Debra -- Naidoo, Jacinth -- Wei, Shuguang -- Tai, Hsin-Hsiung -- Gerson, Stanton L -- Ready, Joseph M -- Posner, Bruce -- Willson, James K V -- Markowitz, Sanford D -- 1P01CA95471-09/CA/NCI NIH HHS/ -- 5P30 CA142543-03/CA/NCI NIH HHS/ -- P01 CA095471/CA/NCI NIH HHS/ -- P30 CA043703/CA/NCI NIH HHS/ -- P30 CA142543/CA/NCI NIH HHS/ -- P30 DK020572/DK/NIDDK NIH HHS/ -- P30 DK097948/DK/NIDDK NIH HHS/ -- P50 CA130810/CA/NCI NIH HHS/ -- P50 CA150964/CA/NCI NIH HHS/ -- R01 CA127590/CA/NCI NIH HHS/ -- R25 CA148052/CA/NCI NIH HHS/ -- R25CA148052/CA/NCI NIH HHS/ -- U54 HL119810/HL/NHLBI NIH HHS/ -- U54HL119810/HL/NHLBI NIH HHS/ -- UL1 TR000439/TR/NCATS NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2015 Jun 12;348(6240):aaa2340. doi: 10.1126/science.aaa2340.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, Case Western Reserve University, Cleveland, OH 44106, USA. ; Department of Medicine, Case Western Reserve University, Cleveland, OH 44106, USA. Department of Gastroenterology, Haeundae Paik Hospital, Inje University, Busan 612896, South Korea. ; Department of Medicine, Case Western Reserve University, Cleveland, OH 44106, USA. Department of Surgery, Busan Paik Hospital, and Paik Institute of Clinical Research and Ocular Neovascular Research Center, Inje University, Busan, South Korea. ; Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA. ; Department of Medicine, Case Western Reserve University, Cleveland, OH 44106, USA. Case Medical Center, University Hospitals of Cleveland, Cleveland, OH 44106, USA. ; Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, OH 44106, USA. Department of Pathology, Case Western Reserve University, Cleveland, OH 44106, USA. Case Medical Center, University Hospitals of Cleveland, Cleveland, OH 44106, USA. ; Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, OH 44106, USA. Department of Pathology, Case Western Reserve University, Cleveland, OH 44106, USA. ; Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, OH 44106, USA. Department of Genetics and Genome Sciences, Case Western Reserve University, Cleveland, OH 44106, USA. ; Department of Family Medicine, University of Michigan, Ann Arbor MI 48109, USA. ; Department of Pharmacology, Vanderbilt University, Nashville, TN 37232, USA. ; Proteomics Center, Case Western Reserve University, Cleveland, OH 44106, USA. ; Department of Surgery, Case Western Reserve University, Cleveland, OH 44106, USA. Case Medical Center, University Hospitals of Cleveland, Cleveland, OH 44106, USA. ; Department of Pharmacology, Case Western Reserve University, Cleveland, OH 44106, USA. ; College of Pharmacy, University of Kentucky, Lexington, KY 40536, USA. ; Department of Medicine, Case Western Reserve University, Cleveland, OH 44106, USA. Case Comprehensive Cancer Center, Case Western Reserve University, Cleveland, OH 44106, USA. Case Medical Center, University Hospitals of Cleveland, Cleveland, OH 44106, USA. sxm10@cwru.edu james.willson@utsouthwestern.edu slg5@cwru.edu joseph.ready@utsouthwestern.edu bruce.posner@utsouthwestern.edu. ; Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA. Simmons Cancer Center, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA. sxm10@cwru.edu james.willson@utsouthwestern.edu slg5@cwru.edu joseph.ready@utsouthwestern.edu bruce.posner@utsouthwestern.edu. ; Simmons Cancer Center, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA. sxm10@cwru.edu james.willson@utsouthwestern.edu slg5@cwru.edu joseph.ready@utsouthwestern.edu bruce.posner@utsouthwestern.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26068857" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Bone Marrow Transplantation ; Colitis/enzymology/prevention & control ; Dinoprostone/metabolism ; Enzyme Inhibitors/chemistry/pharmacology ; Hematopoiesis/drug effects ; Hydroxyprostaglandin Dehydrogenases/antagonists & inhibitors/genetics/*physiology ; Liver Regeneration/drug effects ; Mice ; Mice, Knockout ; Prostaglandins/*metabolism ; Pyridines/chemistry/pharmacology ; Regeneration/drug effects/genetics/*physiology ; Thiophenes/chemistry/pharmacology
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 6
    Publikationsdatum: 2015-11-07
    Beschreibung: Dinoflagellates are important components of marine ecosystems and essential coral symbionts, yet little is known about their genomes. We report here on the analysis of a high-quality assembly from the 1180-megabase genome of Symbiodinium kawagutii. We annotated protein-coding genes and identified Symbiodinium-specific gene families. No whole-genome duplication was observed, but instead we found active (retro)transposition and gene family expansion, especially in processes important for successful symbiosis with corals. We also documented genes potentially governing sexual reproduction and cyst formation, novel promoter elements, and a microRNA system potentially regulating gene expression in both symbiont and coral. We found biochemical complementarity between genomes of S. kawagutii and the anthozoan Acropora, indicative of host-symbiont coevolution, providing a resource for studying the molecular basis and evolution of coral symbiosis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lin, Senjie -- Cheng, Shifeng -- Song, Bo -- Zhong, Xiao -- Lin, Xin -- Li, Wujiao -- Li, Ling -- Zhang, Yaqun -- Zhang, Huan -- Ji, Zhiliang -- Cai, Meichun -- Zhuang, Yunyun -- Shi, Xinguo -- Lin, Lingxiao -- Wang, Lu -- Wang, Zhaobao -- Liu, Xin -- Yu, Sheng -- Zeng, Peng -- Hao, Han -- Zou, Quan -- Chen, Chengxuan -- Li, Yanjun -- Wang, Ying -- Xu, Chunyan -- Meng, Shanshan -- Xu, Xun -- Wang, Jun -- Yang, Huanming -- Campbell, David A -- Sturm, Nancy R -- Dagenais-Bellefeuille, Steve -- Morse, David -- AI056034/AI/NIAID NIH HHS/ -- AI073806/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2015 Nov 6;350(6261):691-4. doi: 10.1126/science.aad0408.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉State Key Laboratory of Marine Environmental Science and Marine Biodiversity and Global Change Research Center, Xiamen University, Xiamen 361101, China. Department of Marine Sciences, University of Connecticut, Groton, CT 06340, USA. senjie.lin@uconn.edu. ; Beijing Genomics Institute (BGI)-Shenzhen, Shenzhen, 518083, China. Hong Kong University (HKU)-BGI Bioinformatics Algorithms and Core Technology Research Laboratory, The Computer Science Department, The University of Hong Kong, Hong Kong, China. School of Biological Sciences, The University of Hong Kong, Pokfulam, Hong Kong, China. ; Beijing Genomics Institute (BGI)-Shenzhen, Shenzhen, 518083, China. ; State Key Laboratory of Marine Environmental Science and Marine Biodiversity and Global Change Research Center, Xiamen University, Xiamen 361101, China. ; Department of Marine Sciences, University of Connecticut, Groton, CT 06340, USA. ; State Key Laboratory of Stress Cell Biology, School of Life Sciences, Xiamen University, Xiamen 361101, China. ; Bioinformatics Institute, Agency for Science, Technology and Research, Singapore. ; Beijing Genomics Institute (BGI)-Shenzhen, Shenzhen, 518083, China. Department of Biology, University of Copenhagen, DK-2200 Copenhagen, Denmark. Princess Al Jawhara Center of Excellence in the Research of Hereditary Disorders, King Abdulaziz University, Jeddah, Saudi Arabia. ; Beijing Genomics Institute (BGI)-Shenzhen, Shenzhen, 518083, China. Princess Al Jawhara Center of Excellence in the Research of Hereditary Disorders, King Abdulaziz University, Jeddah, Saudi Arabia. James D. Watson Institute of Genome Science, Hangzhou, China. ; Department of Microbiology, Immunology, and Molecular Genetics, David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, CA 90095, USA. ; Institut de Recherche en Biologie Vegetale, Departement de Sciences Biologiques, Universite de Montreal, Montreal, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26542574" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Anthozoa/*physiology ; Biological Evolution ; *Coral Reefs ; Dinoflagellida/*genetics ; *Gene Expression Regulation ; Gene Targeting ; *Genome, Protozoan ; MicroRNAs/genetics ; Symbiosis/*genetics
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
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  • 7
    Publikationsdatum: 2016-09-15
    Beschreibung: Author(s): F. Y. Bruno, A. Tamai, Q. S. Wu, I. Cucchi, C. Barreteau, A. de la Torre, S. McKeown Walker, S. Riccò, Z. Wang, T. K. Kim, M. Hoesch, M. Shi, N. C. Plumb, E. Giannini, A. A. Soluyanov, and F. Baumberger The authors present here several advances towards a comprehensive understanding of WTe 2 . Using microfocus laser ARPES, they resolve for the first time the distinct electronic structure of both inequivalent top and bottom (001) surfaces of WTe 2 . Moreover, they demonstrate for the first time the presence of large surface state Fermi arcs on both surfaces. Using surface electronic structure calculations, they further demonstrate that these Fermi arcs are topologically trivial and that their existence is independent of the presence of type-II Weyl points in the bulk band structure. Contrary to common belief, the observation of surface state Fermi arcs is thus not suitable to robustly identify a type-II Weyl semimetal. Finally, the authors use the observation of Fermi arcs and distinct top and bottom surfaces to clarify the controversial bulk electronic structure of WTe 2 . They show that the bulk Fermi surface is formed by three-dimensional electron and hole pockets with areas that are found to be in good agreement with transport experiments, with the exception of small hole pockets that have not been observed in quantum oscillation experiments. [Phys. Rev. B 94, 121112(R)] Published Wed Sep 14, 2016
    Schlagwort(e): Electronic structure and strongly correlated systems
    Print ISSN: 1098-0121
    Digitale ISSN: 1095-3795
    Thema: Physik
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  • 8
    Publikationsdatum: 2018-01-17
    Beschreibung: Author(s): D. Zhao, S. J. Li, N. Z. Wang, J. Li, D. W. Song, L. X. Zheng, L. P. Nie, X. G. Luo, T. Wu, and X. H. Chen Although Fe-based superconductors are correlated electronic systems with multiorbital, previous nuclear magnetic resonance (NMR) measurement suggests that a single spin-fluid model is sufficient to describe its spin behavior. Here, we first observed the breakdown of single spin-fluid model in a heav... [Phys. Rev. B 97, 045118] Published Tue Jan 16, 2018
    Schlagwort(e): Electronic structure and strongly correlated systems
    Print ISSN: 1098-0121
    Digitale ISSN: 1095-3795
    Thema: Physik
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  • 9
    Publikationsdatum: 2015-03-03
    Beschreibung: Author(s): Y. P. Wu, D. Zhao, X. R. Lian, X. F. Lu, N. Z. Wang, X. G. Luo, X. H. Chen, and T. Wu We report on 7 Li and 77 Se nuclear magnetic resonance (NMR) measurements in the newly discovered iron-based superconductor (Li 0.8  Fe 0.2 )OHFeSe. Both remarkable change in spectrum and divergence of spin-spin relaxation (T 2 ) are observed with decreasing temperature, suggesting a static magnetic orderin... [Phys. Rev. B 91, 125107] Published Mon Mar 02, 2015
    Schlagwort(e): Electronic structure and strongly correlated systems
    Print ISSN: 1098-0121
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    Thema: Physik
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  • 10
    Publikationsdatum: 2015-02-13
    Beschreibung: Author(s): N. Wakeham, Y. Q. Wang, Z. Fisk, F. Ronning, and J. D. Thompson We have used ion irradiation to damage the (001) surfaces of SmB 6 single crystals to varying depths, and have measured the resistivity as a function of temperature for each depth of damage. We observe a reduction in the residual resistivity with increasing depth of damage. Our data are consistent wi... [Phys. Rev. B 91, 085107] Published Thu Feb 12, 2015
    Schlagwort(e): Electronic structure and strongly correlated systems
    Print ISSN: 1098-0121
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    Thema: Physik
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