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  • Electronic structure and strongly correlated systems  (1,199)
  • Magnetism  (783)
  • Radiocarbon
  • 2020-2024  (4)
  • 2010-2014  (1,982)
  • 2021  (4)
  • 2014  (1,982)
  • 1
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    Tell Abu al-Kharaz in the Jordan Valley (2021)
    Verlag der Österreichischen Akademie der Wissenschaften
    Details
    Publication Date: 2024-04-04
    Description: Tell city of Abu al-Kharaz is situated in the central Transjordanian Jordan Valley and excavated by the author from 1989 to 2012. The town flourished in the Early Bronze Age, and after an occupational lacuna of more than thousand years the site was re-occupied in the second half of the Middle Bronze Age and remained permanently occupied until the end of the Iron Age. The new volume is No. III in a series of three (The Early Bronze Age Vol. I, published by the Austrian Academy of Sciences Press in 2008, and the Middle and Late Bronze Ages Vol. II, in 2006).
    Description: Tell Abu al-Kharaz, ein Siedlungshügel im mittleren Jordantal, wurde zwischen 1989 und 2012 unter der Leitung des Autors erforscht. Die Stadt erlebte ihre Blütezeit in der Frühbronzezeit und – nach einer längeren Besiedlungslücke – in der späten Mittelbronze- und der Spätbronzezeit. Als letzter Band in einer Serie von drei Bänden über Tell Abu al-Kharaz (Band I: Frühbronzezeit, 2008; Band II: Mittel- und Spätbronzezeit, 2006) ist das vorliegende Buch der erste abgeschlossene Bericht über eine eisenzeitliche Siedlung im Jordantal.
    Keywords: Tell Abu al-Kharaz ; Archaeology ; Iron Age ; Jordan Valley ; Sea Peoples ; Chronology ; Radiocarbon ; Interkultural Connections ; Assyria ; Tell Abu al-Kharaz ; Archäologie ; Eisenzeit ; Jordantal ; Seevölker ; Chronologie ; Radiokarbon ; interkulturelle Verbindungen ; Assyrier ; Bronze Age ; Brown ; Krater ; Mudbrick ; Peter M. Fischer ; Pottery ; Stratigraphy ; thema EDItEUR::N History and Archaeology::NK Archaeology
    Language: English
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    E-BOOK
  • 2
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    Laboratory of Ion Beam Physics ETH – Annual Report 2016 (2021)
    LIBRUM Publishers & Editors LLC
    Details
    Publication Date: 2024-04-04
    Description: Der Band enthält die Rechenschaftsberichte des Laboratory of Ion Beam Physics der ETH Zürich für das Jahr 2016. Zahlreiche Ergebnisse und der neueste Stand der Wissenschaft für Ionenphysik werden kurz vorgestellt. Diese Jahresberichte werden bei LIBRUM geführt, weil sie auch für die neuesten Erkenntnisse der 14C-Datierungsmethoden relevant sind und insofern auch für die Archäologie neue und wesentliche Erkenntnisse vermitteln. The Laboratory of Ion Beam Physics (LIP) is a leading research center for the development of Accelerator Mass Spectrometry (AMS) and a world-class laboratory for the application of Ion Beam Physics in a wide range of fields. It can rely on a broad funding base and can thus serve a large user community from many highly current disciplines. LIP acts as a national competence center for ion beam applications. This annual report is a brief summary of the accomplished achievements. It covers the wide range of fields from fundamental research, over operational issues of the laboratory, to the vast variety of exciting applications of our measurement technologies. Naturally, the publications listed in the appendix of this report will provide a much deeper insight into our research.
    Keywords: QC1-999 ; ion beam ; Radiocarbon ; physics ; C14 ; ETH ; thema EDItEUR::P Mathematics and Science::PH Physics
    Language: English
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  • 3
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    Magnetism and Accelerator-Based Light Sources (2021)
    Springer Nature | Springer
    Details
    Publication Date: 2024-04-05
    Description: This open access book collects the contributions of the seventh school on Magnetism and Synchrotron Radiation held in Mittelwihr, France, from 7 to 12 October 2018. It starts with an introduction to the physics of modern X-ray sources followed by a general overview of magnetism. Next, light / matter interaction in the X-ray range is covered with emphasis on different types of angular dependence of X-ray absorption spectroscopy and scattering. In the end, two domains where synchrotron radiation-based techniques led to new insights in condensed matter physics, namely spintronics and superconductivity, are discussed. The book is intended for advanced students and researchers to get acquaintance with the basic knowledge of X-ray light sources and to step into synchrotron-based techniques for magnetic studies in condensed matter physics or chemistry.
    Keywords: Spectroscopy and Microscopy ; Atomic, Molecular, Optical and Plasma Physics ; Optics, Lasers, Photonics, Optical Devices ; Condensed Matter Physics ; Magnetism, Magnetic Materials ; Semiconductors ; X-Ray Spectroscopy ; Synchrotron Techniques ; Laser-Matter Interaction ; Strongly Correlated Systems ; Magnetism ; x-ray light sources ; x-ray scattering ; spintronics ; Open Access ; Gauge invariance in spectroscopy ; molecular magnestism ; magnetic semiconductors ; Spectrum analysis, spectrochemistry, mass spectrometry ; Scientific equipment, experiments & techniques ; Atomic & molecular physics ; Optical physics ; Applied optics ; Materials / States of matter ; Electricity, electromagnetism & magnetism ; Electronic devices & materials ; thema EDItEUR::P Mathematics and Science::PN Chemistry::PNF Analytical chemistry::PNFS Spectrum analysis, spectrochemistry, mass spectrometry ; thema EDItEUR::P Mathematics and Science::PH Physics::PHM Atomic and molecular physics ; thema EDItEUR::P Mathematics and Science::PH Physics::PHJ Optical physics ; thema EDItEUR::P Mathematics and Science::PH Physics::PHD Classical mechanics::PHDF Physics: Fluid mechanics ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TJ Electronics and communications engineering::TJF Electronics engineering::TJFC Electronics: circuits and components
    Language: English
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  • 4
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    Soil organic matter turnover rates increase to match increased inputs in grazed grasslands (2021)
    Stoner, Shane W. ; Hoyt, Alison M. ; Trumbore, Susan ; [et al.]
    Springer International Publishing
    Details
    Publication Date: 2023-11-23
    Description: Managed grasslands have the potential to store carbon (C) and partially mitigate climate change. However, it remains difficult to predict potential C storage under a given soil or management practice. To study C storage dynamics due to long-term (1952–2009) phosphorus (P) fertilizer and irrigation treatments in New Zealand grasslands, we measured radiocarbon (〈sup〉14〈/sup〉C) in archived soil along with observed changes in C stocks to constrain a compartmental soil model. Productivity increases from P application and irrigation in these trials resulted in very similar C accumulation rates between 1959 and 2009. The ∆〈sup〉14〈/sup〉C changes over the same time period were similar in plots that were both irrigated and fertilized, and only differed in a non-irrigated fertilized plot. Model results indicated that decomposition rates of fast cycling C (0.1 to 0.2 year〈sup〉−1〈/sup〉) increased to nearly offset increases in inputs. With increasing P fertilization, decomposition rates also increased in the slow pool (0.005 to 0.008 year〈sup〉−1〈/sup〉). Our findings show sustained, significant (i.e. greater than 4 per mille) increases in C stocks regardless of treatment or inputs. As the majority of fresh inputs remain in the soil for less than 10 years, these long term increases reflect dynamics of the slow pool. Additionally, frequent irrigation was associated with reduced stocks and increased decomposition of fresh plant material. Rates of C gain and decay highlight trade-offs between productivity, nutrient availability, and soil C sequestration as a climate change mitigation strategy.
    Description: European Research Council http://dx.doi.org/10.13039/501100000781
    Description: GNS Science
    Description: Max Planck Institute for Biogeochemistry (2)
    Description: https://github.com/ShaneStoner/Winchmore14C
    Keywords: ddc:631.4 ; Radiocarbon ; Soil carbon ; Soil modeling ; Carbon sequestration ; Transit time ; SoilR
    Language: English
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  • 5
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    Radiocarbon age-offsets in an arctic lake reveal the long-term response of permafrost carbon to climate change (2014)
    John Wiley & Sons
    Details
    Publication Date: 2022-05-26
    Description: Author Posting. © American Geophysical Union, 2014. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research: Biogeosciences 119 (2014): 1630–1651, doi:10.1002/2014JG002688.
    Description: Continued warming of the Arctic may cause permafrost to thaw and speed the decomposition of large stores of soil organic carbon (OC), thereby accentuating global warming. However, it is unclear if recent warming has raised the current rates of permafrost OC release to anomalous levels or to what extent soil carbon release is sensitive to climate forcing. Here we use a time series of radiocarbon age-offsets (14C) between the bulk lake sediment and plant macrofossils deposited in an arctic lake as an archive for soil and permafrost OC release over the last 14,500 years. The lake traps and archives OC imported from the watershed and allows us to test whether prior warming events stimulated old carbon release and heightened age-offsets. Today, the age-offset (2 ka; thousand of calibrated years before A.D. 1950) and the depositional rate of ancient OC from the watershed into the lake are relatively low and similar to those during the Younger Dryas cold interval (occurring 12.9–11.7 ka). In contrast, age-offsets were higher (3.0–5.0 ka) when summer air temperatures were warmer than present during the Holocene Thermal Maximum (11.7–9.0 ka) and Bølling-Allerød periods (14.5–12.9 ka). During these warm times, permafrost thaw contributed to ancient OC depositional rates that were ~10 times greater than today. Although permafrost OC was vulnerable to climate warming in the past, we suggest surface soil organic horizons and peat are presently limiting summer thaw and carbon release. As a result, the temperature threshold to trigger widespread permafrost OC release is higher than during previous warming events.
    Description: National Science Foundation. Grant Number: ARC-0902169
    Description: 2015-02-22
    Keywords: Radiocarbon ; Lake sediment ; Carbon cycling ; Permafrost ; Paleoclimatology ; Younger Dryas
    Repository Name: Woods Hole Open Access Server
    Type: Article
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  • 6
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    Cluster algorithm for Monte Carlo simulations of spin ice (2014)
    American Physical Society (APS)
    Details
    Publication Date: 2014-12-12
    Description: Author(s): Hiromi Otsuka We present an algorithm for Monte Carlo simulations of a nearest-neighbor spin-ice model based on its cluster representation. To assess its performance, we estimate a relaxation time, and find that, in contrast to the Metropolis algorithm, our algorithm does not develop spin freezing. Also, to demon... [Phys. Rev. B 90, 220406] Published Thu Dec 11, 2014
    Keywords: Magnetism
    Print ISSN: 1098-0121
    Electronic ISSN: 1095-3795
    Topics: Physics
    Published by American Physical Society (APS)
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  • 7
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    Hierarchical stripe phases in IrTe_{2} driven by competition between Ir dimerization and Te bonding (2014)
    American Physical Society (APS)
    Details
    Publication Date: 2014-12-12
    Description: Author(s): Jixia Dai, Kristjan Haule, J. J. Yang, Y. S. Oh, S-W. Cheong, and Weida Wu Layered 5d transition metal dichalcogenide (TMD) IrTe 2 is distinguished from the traditional TMDs (such as NbSe 2 ) by the existence of multiple charge-density wave (CDW)-like stripe phases and superconductivity at low temperatures. Despite intensive studies, there is still no consensus on the physica... [Phys. Rev. B 90, 235121] Published Thu Dec 11, 2014
    Keywords: Electronic structure and strongly correlated systems
    Print ISSN: 1098-0121
    Electronic ISSN: 1095-3795
    Topics: Physics
    Published by American Physical Society (APS)
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  • 8
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    Self-organized electronic superlattices in layered materials (2014)
    American Physical Society (APS)
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    Publication Date: 2014-12-16
    Description: Author(s): Carmine Ortix, Carlo Di Castro, and José Lorenzana We show that in layered systems with electronic phase separation tendency, the long-range Coulomb interaction can drive the spontaneous formation of unidirectional superlattices of electronic charge in a completely homogeneous crystalline background. In this self-organized electronic heterostructure... [Phys. Rev. B 90, 241110] Published Mon Dec 15, 2014
    Keywords: Electronic structure and strongly correlated systems
    Print ISSN: 1098-0121
    Electronic ISSN: 1095-3795
    Topics: Physics
    Published by American Physical Society (APS)
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  • 9
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    Resonating valence-bond physics on the honeycomb lattice (2014)
    American Physical Society (APS)
    Details
    Publication Date: 2014-12-16
    Description: Author(s): Pranay Patil, Ishita Dasgupta, and Kedar Damle We study bond and spin correlations of the nearest-neighbor resonating valence bond (RVB) wave function for a SU(2) symmetric S=1/2 antiferromagnet on the honeycomb lattice. We find that spin correlations in this wave function are short ranged, while the bond energy correlation function takes on an ... [Phys. Rev. B 90, 245121] Published Mon Dec 15, 2014
    Keywords: Electronic structure and strongly correlated systems
    Print ISSN: 1098-0121
    Electronic ISSN: 1095-3795
    Topics: Physics
    Published by American Physical Society (APS)
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  • 10
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    Frustration and multicriticality in the antiferromagnetic spin-1 chain (2014)
    American Physical Society (APS)
    Details
    Publication Date: 2014-12-16
    Description: Author(s): J. H. Pixley, Aditya Shashi, and Andriy H. Nevidomskyy The antiferromagnetic spin-1 chain has a venerable history and has been thought to be well understood. Here, we show that inclusion of both next-nearest-neighbor (α) and biquadratic (β) interactions results in a rich phase diagram with a multicritical point that has not been observed before. We stud... [Phys. Rev. B 90, 214426] Published Mon Dec 15, 2014
    Keywords: Magnetism
    Print ISSN: 1098-0121
    Electronic ISSN: 1095-3795
    Topics: Physics
    Published by American Physical Society (APS)
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