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  • Superfluidity and superconductivity  (2)
  • ASTROPHYSICS  (1)
  • 1
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    Spin-density-wave-induced anomalies in the optical conductivity of AFe_{2}As_{2}, (A=Ca, Sr, Ba) single-crystalline iron pnictides (2013)
    American Physical Society (APS)
    Details
    Publication Date: 2013-11-23
    Description: Author(s): A. Charnukha, D. Pröpper, T. I. Larkin, D. L. Sun, Z. W. Li, C. T. Lin, T. Wolf, B. Keimer, and A. V. Boris We report the complex dielectric function of high-quality A Fe 2 As 2 , ( A =Ca, Sr, Ba) single crystals with T N ≈150 K, 200 K, and 138 K, respectively, determined by broadband spectroscopic ellipsometry at temperatures 10≤ T ≤300 K and wave numbers from 100 cm −1 to 52000 cm −1 . In CaFe 2 As 2 we identify the opt... [Phys. Rev. B 88, 184511] Published Fri Nov 22, 2013
    Keywords: Superfluidity and superconductivity
    Print ISSN: 1098-0121
    Electronic ISSN: 1095-3795
    Topics: Physics
    Published by American Physical Society (APS)
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  • 2
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    Anomalous temperature evolution of the electronic structure of FeSe (2017)
    American Physical Society (APS)
    Details
    Publication Date: 2017-09-16
    Description: Author(s): Y. S. Kushnirenko, A. A. Kordyuk, A. V. Fedorov, E. Haubold, T. Wolf, B. Büchner, and S. V. Borisenko We present angle-resolved photoemission spectroscopy data taken from the structurally simplest representative of iron-based superconductors, FeSe, in a wide temperature range. Apart from the variations related to the nematic transition, we detect very pronounced shifts of the dispersions on the scal... [Phys. Rev. B 96, 100504(R)] Published Fri Sep 15, 2017
    Keywords: Superfluidity and superconductivity
    Print ISSN: 1098-0121
    Electronic ISSN: 1095-3795
    Topics: Physics
    Published by American Physical Society (APS)
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  • 3
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    Radiative Amplification of Acoustic Waves in Hot Stars (1985)
    In:  CASI
    Details
    Publication Date: 2014-09-16
    Description: The discovery of broad P Cygni profiles in early type stars and the detection of X-rays emitted from the envelopes of these stars made it clear, that a considerable amount of mechanical energy has to be present in massive stars. An attack on the problem, which has proven successful when applied to late type stars is proposed. It is possible that acoustic waves form out of random fluctuations, amplify by absorbing momentum from stellar radiation field, steepen into shock waves and dissipate. A stellar atmosphere was constructed, and sinusoidal small amplitude perturbations of specified Mach number and period at the inner boundary was introduced. The partial differential equations of hydrodynamics and the equations of radiation transfer for grey matter were solved numerically. The equation of motion was augmented by a term which describes the absorption of momentum from the radiation field in the continuum and in lines, including the Doppler effect and allows for the treatment of a large number of lines in the radiative acceleration term.
    Keywords: ASTROPHYSICS
    Type: NASA. Goddard Space Flight Center The Origin of Nonradiative Heating(Momentum in Hot Stars; p 233-235
    Format: text
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    NASA TECHNICAL REPORTS
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