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  • GEOPHYSICS  (10)
  • Condensed Matter: Electronic Properties, etc.  (3)
  • Space Radiation  (2)
  • Plasma Physics  (1)
  • SPACECRAFT PROPULSION AND POWER
  • 1
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    Influence of Spin-Orbit Coupling in Iron-Based Superconductors (2018)
    American Physical Society (APS)
    Details
    Publication Date: 2018-08-18
    Description: Author(s): R. P. Day, G. Levy, M. Michiardi, B. Zwartsenberg, M. Zonno, F. Ji, E. Razzoli, F. Boschini, S. Chi, R. Liang, P. K. Das, I. Vobornik, J. Fujii, W. N. Hardy, D. A. Bonn, I. S. Elfimov, and A. Damascelli We report on the influence of spin-orbit coupling (SOC) in Fe-based superconductors via application of circularly polarized spin and angle-resolved photoemission spectroscopy. We combine this technique in representative members of both the Fe-pnictides (LiFeAs) and Fe-chalcogenides (FeSe) with tight... [Phys. Rev. Lett. 121, 076401] Published Fri Aug 17, 2018
    Keywords: Condensed Matter: Electronic Properties, etc.
    Print ISSN: 0031-9007
    Electronic ISSN: 1079-7114
    Topics: Physics
    Published by American Physical Society (APS)
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  • 2
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    Unusual Interplay between Superconductivity and Field-Induced Charge Order in ${\mathrm{YBa}}_{2}{\mathrm{Cu}}_{3}{\mathrm{O}}_{y}$ (2018)
    American Physical Society (APS)
    Details
    Publication Date: 2018-10-19
    Description: Author(s): J. Kačmarčík, I. Vinograd, B. Michon, A. Rydh, A. Demuer, R. Zhou, H. Mayaffre, R. Liang, W. N. Hardy, D. A. Bonn, N. Doiron-Leyraud, L. Taillefer, M.-H. Julien, C. Marcenat, and T. Klein We present a detailed study of the temperature ( T ) and magnetic field ( H ) dependence of the electronic density of states (DOS) at the Fermi level, as deduced from specific heat and Knight shift measurements in underdoped YBa 2 Cu 3 O y . We find that the DOS becomes field independent above a characteristi... [Phys. Rev. Lett. 121, 167002] Published Thu Oct 18, 2018
    Keywords: Condensed Matter: Electronic Properties, etc.
    Print ISSN: 0031-9007
    Electronic ISSN: 1079-7114
    Topics: Physics
    Published by American Physical Society (APS)
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  • 3
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    Quasiparticle Scattering off Defects and Possible Bound States in Charge-Ordered YBa_{2} Cu_{3} O_{y} (2017)
    American Physical Society (APS)
    Details
    Publication Date: 2017-01-12
    Description: Author(s): R. Zhou, M. Hirata, T. Wu, I. Vinograd, H. Mayaffre, S. Krämer, M. Horvatić, C. Berthier, A. P. Reyes, P. L. Kuhns, R. Liang, W. N. Hardy, D. A. Bonn, and M.-H. Julien We report the NMR observation of a skewed distribution of O 17 Knight shifts when a magnetic field quenches superconductivity and induces long-range charge-density-wave (CDW) order in YBa 2 Cu 3 O y . This distribution is explained by an inhomogeneous pattern of the local density of states N ( E F ) arising fr… [Phys. Rev. Lett. 118, 017001] Published Tue Jan 03, 2017
    Keywords: Condensed Matter: Electronic Properties, etc.
    Print ISSN: 0031-9007
    Electronic ISSN: 1079-7114
    Topics: Physics
    Published by American Physical Society (APS)
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  • 4
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    Flight data from the PASP-Plus experiment (1995)
    In:  Other Sources
    Details
    Publication Date: 2011-08-24
    Description: The photovoltaic array space power (PASP)-Plus solar cell flight experiment is described, and the observed performances of different solar cell types during the first six months of their operation, are summarized. The solar cell types include single crystal and amorphous silicon, GaAs, several multijunction cell types, indium phosphide and GaAs/GaSb concentrator cells. The radiation degradation experienced by some of the solar cell types agrees with theoretical predictions. Other samples, including silicon, are degraded less than predicted. Effects, including the increase in temperature of all the experiments and the effect of sun glint on cell measurement, are discussed.
    Keywords: SPACECRAFT PROPULSION AND POWER
    Type: ESA, Proceedings of 4th European Space Power Conference (ESPC). Volume 2: Photovoltaic Generators, Energy Storage; p 578-592
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  • 5
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    High latitude currents in the 0600 to 0900 MLT sector - Observations from Viking and DMSP-F7 (1987)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: High-resolution magnetic field and charged-particle data acquired on March 25, 1986 by the Viking and DMSP-F7 satellites, as they traversed the dawn sector auroral zone on nearly antiparallel trajectories within 40 min of each oher, are analyzed. Magnetic field measurements by Viking at 0850 MLT and by DMSP at 0630 MLT indicate the presence of a large-scale earthward-directed region 1 Birkeland current and an upward-flowing region 2 current. Both satellites also observed a third Birkeland current adjacent to and poleward of the region 1 system with opposite flow. This poleward system is about 0.5 deg invariant latitude wide and has a current density comparable to the region 1 and 2 systems. The highest-latitude current is identified as region 0. Its charged-particle signatures were used to infer field line mapping to the equatorial plane.
    Keywords: GEOPHYSICS
    Type: Geophysical Research Letters (ISSN 0094-8276); 14; 423-426
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  • 6
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    Propagating substorm injection fronts (1981)
    In:  Other Sources
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    Publication Date: 2019-06-28
    Description: It is argued that a series of two-satellite observations leads to a clarification of substorm plasma injection, in which boundary motion plays a major role. Emphasis is put on a type of event characterized by abrupt, dispersionless changes in electron intensity and a coincident perturbation that consists of both a field magnitude increase and a small rotation toward more dipolar orientation. Comparing plasma observations at two points, it is found that in active, preinjection conditions the two most important features of the plasma sheet are: (1) the low-energy convection boundary for near-zero energy particles, determined by the magnitude of the large-scale convection electric field; and (2) the precipitation-flow boundary layer between the hot plasma sheet and the atmospherically contaminated inner plasma sheet.
    Keywords: GEOPHYSICS
    Type: Journal of Geophysical Research; 86; Aug. 1
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  • 7
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    Double-peaked ion spectra in the lobe plasma - Evidence for massive ions (1977)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: Suprathermal Ion Detector Experiments (SIDE) have suggested the presence of a significant secondary peak in the ion distribution function during geomagnetic active periods when the moon is within the lobe plasma. It is observed that: (1) an increase in the primary peak bulk velocity is reflected in an increase in secondary peak bulk velocity, (2) both spectra are narrow in the instrument-look direction (assumed parallel to the flow) and peak temperatures are usually less than about 10 eV, (3) periods for double peak observations comprise about 10% of the total lobe plasma observation time, (4) assuming that peaks are caused by protons, and without correcting for lunar surface potential, primary peak bulk velocity is between about 70 and 160 km/s, and secondary peak bulk velocity is between about 360 and 840 km/s, and (5) assuming equal flow velocities outside the influence of the lunar surface potential are equal for the ions of the two peaks, and making corrections for this potential, secondary peak ions are consistent with N(+) or O(+), and the ratio of O(+) to proton number densities is usually less than about 2 x 10 to the -3rd.
    Keywords: GEOPHYSICS
    Type: Journal of Geophysical Research; 82; Dec. 1
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  • 8
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    Heavy ion circulation in the earth's magnetosphere (1977)
    In:  Other Sources
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    Publication Date: 2019-06-27
    Description: A mechanism for heavy ion circulation in the magnetosphere is proposed. Singly charged ions heavy ions from the plasmasphere are convected intermittently to the dayside magnetopause, accelerated there, swept into the distant tail lobes and boundary layer, and convected earthward in the plasma sheet to reenter the magnetosphere.
    Keywords: GEOPHYSICS
    Type: Geophysical Research Letters; 4; May 1977
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  • 9
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    A new plasma regime in the distant geomagnetic tail (1975)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: Observations are reported of an extensive region of low-energy plasma particles (LEP) flowing antisunward along the ordered field lines in the lobes of the geomagnetic tail at lunar distances. The flow was detected by three suprathermal ion detectors deployed on the lunar surface during the Apollo 12, 14, and 15 missions. This particle regime is found to be similar to the 'boundary layer' and 'plasma mantle' observed at smaller geocentric distances and to an interior flow region parallel to the magnetopause in the dayside magnetosphere. It is located exterior to the plasma sheet across essentially the entire tail and adjacent to the magnetopause on both the dawn and dusk sides of the magnetosphere. Variations in the integral flux, temperature, and number density are described. It is suggested that this flow and the three similar regimes are simply connected along the inner surface of the magnetopause and are, in fact, the same phenomenon.
    Keywords: GEOPHYSICS
    Type: Geophysical Research Letters; 2; May 1975
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  • 10
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    Occurrence of the lobe plasma at lunar distance (1979)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: Recent analysis has confirmed the existence of the lobe plasma, the extension of the 'boundary layer' and 'plasma mantle' to lunar distances. The observation of the lobe plasma is strongly correlated with the y component of the IMF. Generally, the lobe plasma is observed sporadically for a full day after the moon has entered the tail and a full day before the last magnetopause crossing as it exits the tail. An average extent of approximately 8-10 earth radii inward from the magnetopause is inferred; however, the lobe plasma has been seen all across the tail.
    Keywords: GEOPHYSICS
    Type: AD-A065960 , AFGL-TR-79-0051 , Journal of Geophysical Research; 84; Jan. 1
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