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Direct Observation of Local Potassium Variation and Its Correlation to Electronic Inhomogeneity in (Ba_{1-x}K_{x})Fe_{2}As_{2} Pnictide (2011)

W. K. Yeoh, B. Gault, X. Y. Cui, C. Zhu, M. P. Moody, L. Li, R. K. Zheng, W. X Li, X. L. Wang, S. X. Dou, G. L. Sun, C. T. Lin, and S. P. Ringer

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-06-16

Beschreibung: Author(s): W. K. Yeoh, B. Gault, X. Y. Cui, C. Zhu, M. P. Moody, L. Li, R. K. Zheng, W. X Li, X. L. Wang, S. X. Dou, G. L. Sun, C. T. Lin, and S. P. Ringer Local fluctuations in the distribution of dopant atoms are thought to cause the nanoscale electronic disorder or phase separation in pnictide superconductors. Atom probe tomography has enabled the first direct observations of dopant species clustering in a K-doped 122-phase pnictide. First-principle... [Phys. Rev. Lett. 106, 247002] Published Wed Jun 15, 2011

Schlagwort(e): Condensed Matter: Electronic Properties, etc.

Print ISSN: 0031-9007

Digitale ISSN: 1079-7114

Thema: Physik

Publiziert von American Physical Society (APS)

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Quantum Hall Effect from the Topological Surface States of Strained Bulk HgTe (2011)

C. Brüne, C. X. Liu, E. G. Novik, E. M. Hankiewicz, H. Buhmann, Y. L. Chen, X. L. Qi, Z. X. Shen, S. C. Zhang, and L. W. Molenkamp

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2011-03-23

Beschreibung: Author(s): C. Brüne, C. X. Liu, E. G. Novik, E. M. Hankiewicz, H. Buhmann, Y. L. Chen, X. L. Qi, Z. X. Shen, S. C. Zhang, and L. W. Molenkamp We report transport studies on a three-dimensional, 70-nm-thick HgTe layer, which is strained by epitaxial growth on a CdTe substrate. The strain induces a band gap in the otherwise semimetallic HgTe, which thus becomes a three-dimensional topological insulator. Contributions from residual bulk carr... [Phys. Rev. Lett. 106, 126803] Published Tue Mar 22, 2011

Schlagwort(e): Condensed Matter: Electronic Properties, etc.

Print ISSN: 0031-9007

Digitale ISSN: 1079-7114

Thema: Physik

Publiziert von American Physical Society (APS)

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Electric-Field Control of Nonvolatile Magnetization in Co_{40}Fe_{40}B_{20}/Pb(Mg_{1/3}Nb_{2/3})_{0.7}Ti_{0.3}O_{3} Structure at Room Temperature (2012)

S. Zhang, Y. G. Zhao, P. S. Li, J. J. Yang, S. Rizwan, J. X. Zhang, J. Seidel, T. L. Qu, Y. J. Yang, Z. L. Luo, Q. He, T. Zou, Q. P. Chen, J. W. Wang, L. F. Yang, Y. Sun, Y. Z. Wu, X. Xiao, X. F. Jin, J. Huang, C. Gao, X. F. Han, and R. Ramesh

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2012-03-29

Beschreibung: Author(s): S. Zhang, Y. G. Zhao, P. S. Li, J. J. Yang, S. Rizwan, J. X. Zhang, J. Seidel, T. L. Qu, Y. J. Yang, Z. L. Luo, Q. He, T. Zou, Q. P. Chen, J. W. Wang, L. F. Yang, Y. Sun, Y. Z. Wu, X. Xiao, X. F. Jin, J. Huang, C. Gao, X. F. Han, and R. Ramesh We report a large and nonvolatile bipolar-electric-field-controlled magnetization at room temperature in a Co 40 Fe 40 B 20 /Pb(Mg 1/3 Nb 2/3 ) 0.7 Ti 0.3 O 3 structure, which exhibits an electric-field-controlled looplike magnetization. Investigations on the ferroelectric domains and crystal structures with in si... [Phys. Rev. Lett. 108, 137203] Published Wed Mar 28, 2012

Schlagwort(e): Condensed Matter: Electronic Properties, etc.

Print ISSN: 0031-9007

Digitale ISSN: 1079-7114

Thema: Physik

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Orthorhombic BiFeO_{3} (2012)

J. C. Yang, Q. He, S. J. Suresha, C. Y. Kuo, C. Y. Peng, R. C. Haislmaier, M. A. Motyka, G. Sheng, C. Adamo, H. J. Lin, Z. Hu, L. Chang, L. H. Tjeng, E. Arenholz, N. J. Podraza, M. Bernhagen, R. Uecker, D. G. Schlom, V. Gopalan, L. Q. Chen, C. T. Chen, R. Ramesh, and Y. H. Chu

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2012-12-15

Beschreibung: Author(s): J. C. Yang, Q. He, S. J. Suresha, C. Y. Kuo, C. Y. Peng, R. C. Haislmaier, M. A. Motyka, G. Sheng, C. Adamo, H. J. Lin, Z. Hu, L. Chang, L. H. Tjeng, E. Arenholz, N. J. Podraza, M. Bernhagen, R. Uecker, D. G. Schlom, V. Gopalan, L. Q. Chen, C. T. Chen, R. Ramesh, and Y. H. Chu A new orthorhombic phase of the multiferroic BiFeO 3 has been created via strain engineering by growing it on a NdScO 3 (110) o substrate. The tensile-strained orthorhombic BiFeO 3 phase is ferroelectric and antiferromagnetic at room temperature. A combination of nonlinear optical second harmonic generat... [Phys. Rev. Lett. 109, 247606] Published Fri Dec 14, 2012

Schlagwort(e): Condensed Matter: Electronic Properties, etc.

Print ISSN: 0031-9007

Digitale ISSN: 1079-7114

Thema: Physik

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Aperiodic Spin State Ordering of Bistable Molecules and Its Photoinduced Erasing (2012)

E. Collet, H. Watanabe, N. Bréfuel, L. Palatinus, L. Roudaut, L. Toupet, K. Tanaka, J.-P. Tuchagues, P. Fertey, S. Ravy, B. Toudic, and H. Cailleau

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2012-12-22

Beschreibung: Author(s): E. Collet, H. Watanabe, N. Bréfuel, L. Palatinus, L. Roudaut, L. Toupet, K. Tanaka, J.-P. Tuchagues, P. Fertey, S. Ravy, B. Toudic, and H. Cailleau We describe a novel type of ordering phenomenon associated with the incommensurate occupational modulation of bistable molecular magnetic state in a spin-crossover material. This unusual type of aperiodicity resulting from the ordering of multistable electronic states opens new possibilities for add... [Phys. Rev. Lett. 109, 257206] Published Fri Dec 21, 2012

Schlagwort(e): Condensed Matter: Electronic Properties, etc.

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Digitale ISSN: 1079-7114

Thema: Physik

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The Gravity Field of the Moon from the Lunar Prospector Mission (1998)

Kucinskas, A. B. ; Konopliv, A. S. ; Binder, A. B. ; [weitere]

In: Other Sources

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Publikationsdatum: 2018-06-08

Beschreibung: The Lunar Prospector (LP) spacecraft has provided the first polar low latitude measurement of the lunar gravity field and as a result gives significant improvement in the lunar gravity field model.

Schlagwort(e): Lunar and Planetary Science and Exploration

Materialart: Science

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Temporal and Spatial Aspects of Gas Release During the 2010 Apparition of Comet 103P/Hartley-2 (2011)

Paganini, L. ; Lippi, M. ; Magee-Sauer, K. ; [weitere]

In: CASI

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Publikationsdatum: 2019-07-13

Beschreibung: We report measurements of eight primary volatiles (H2O, HCN, CH4, C2H6, CH3OH, C2H2, H2CO, and NH3) and two product species (OH and NH2) in comet 103P/Hartley-2 using high dispersion infrared spectroscopy. We present production rates for individual volatiles species, their mixing ratios relative to water, and their spatial distributions in the coma on multiple dates that span the interval Sept. - Dec. 2010. The production rates vary strongly with nucleus rotation, but the mixing ratios remain constant throughout the campaign. The released primary volatiles exhibit diverse spatial properties which favor the presence of separate polar and apolar ice phases in the nucleus, establish dust and gas release from icy clumps (and also, directly from the nucleus), and provide insights into the driver for the cyanogen (CN) polar jet.

Schlagwort(e): Lunar and Planetary Science and Exploration

Materialart: GSFC.OVPR.4972.2011 , 43rd Annual DPS Meeting; Oct 02, 2011 - Oct 07, 2011; Nantes; France

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Full-scale upper-surface-blown flap noise (1975)

Jones, W. L. ; Homyak, L. ; Heidelberg, L. J.

In: Other Sources

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Publikationsdatum: 2019-07-13

Beschreibung: A highly noise-suppressed TF 34 engine was used to investigate the noise of several powered lift configurations involving upper-surface-blown (USB) flaps. The configuration variables were nozzle type (i.e. slot and circular with deflector), flap chord-length, and flap angle. The results of velocity surveys at both the nozzle exit and the flap trailing edge are used for correlation of the noise data. Configurations using a long flap design were 4 dB quieter than a short flap typical of current trends in USB flap design. The lower noise for the long flap is attributed primarily to the greater velocity decay of the jet at the flap trailing edge. The full-scale data revealed substantially more quadrupole noise in the region near the deflected jet than observed in previous sub-scale tests.

Schlagwort(e): AIRCRAFT DESIGN, TESTING AND PERFORMANCE

Materialart: SAE PAPER 750609 , Society of Automotive Engineers, Air Transportation Meeting; May 06, 1975 - May 08, 1975; Hartford, CT

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Flight test investigation of the vortex wake characteristics behind a Boeing 727 during two-segment and normal ILS approaches (A joint NASA/FAA report) (1975)

Tymczyszyn, J. J. ; Jacobsen, R. A. ; Garodz, L. J. ; [weitere]

In: CASI

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Publikationsdatum: 2019-06-27

Beschreibung: Flight tests were performed to evaluate the vortex wake characteristics of a Boeing 727 aircraft during conventional and two-segment instrument landing approaches. Smoke generators were used for vortex marking. The vortex was intentionally intercepted by a Lear Jet and a Piper Comanche aircraft. The vortex location during landing approach was measured using a system of phototheodolites. The tests showed that at a given separation distance there are no readily apparent differences in the upsets resulting from deliberate vortex encounters during the two types of approaches. The effect of the aircraft configuration on the extent and severity of the vortices is discussed.

Schlagwort(e): AIRCRAFT DESIGN, TESTING AND PERFORMANCE

Materialart: NASA-TM-X-62398 , FAA-NA-75-151

Format: application/pdf

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The Ganymede Interior Structure, and Magnetosphere Observer (GISMO) Mission Concept (2011)

Gleeson, D. ; Ehsan, N. ; McEnulty, T. ; [weitere]

In: Other Sources

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Publikationsdatum: 2019-07-13

Beschreibung: The NASA Planetary Science Summer School (PSSS) at JPL offers graduate students and young professionals a unique opportunity to learn about the mission design process. Program participants select and design a mission based on a recent NASA Science Mission Directorate Announcement of Opportunity (AO). Starting with the AO, in this case the 2009 New Frontiers AO, participants generate a set of science goals and develop a early mission concept to accomplish those goals within the constraints provided. As part of the 2010 NASA PSSS, the Ganymede Interior, Surface, and Magnetosphere Observer (GISMO) team developed a preliminary satellite design for a science mission to Jupiter's moon Ganymede. The science goals for this design focused on studying the icy moon's magnetosphere, internal structure, surface composition, geological processes, and atmosphere. By the completion of the summer school an instrument payload was selected and the necessary mission requirements were developed to deliver a spacecraft to Ganymede that would accomplish the defined science goals. This poster will discuss those science goals, the proposed spacecraft and the proposed mission design of this New Frontiers class Ganymede observer.

Schlagwort(e): Lunar and Planetary Science and Exploration

Materialart: Lunar and Planetary Science Conference; Mar 07, 2011 - Mar 11, 2011; The Woodlands, TX; United States

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