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Pis'ma v Zh. Èksper. Teoret. Fiz., 2013, Volume 97, Issue 8, Pages 561–565 (Mi jetpl3409)  

This article is cited in 2 scientific papers (total in 2 papers)

CONDENSED MATTER

Thermopower of calcium at high pressures

V. V. Brazhkin, O. B. Tsiok, M. V. Magnitskaya

Institute for High Pressure Physics, Russian Academy of Sciences

Abstract: Calcium at megabar pressures undergoes numerous structural transitions and has a complex phase diagram. At the same time, according to the recent theoretical investigations, an anomalous behavior of many physical properties, including a transition to the state of a narrow-gap semiconductor, can be expected even in the region of stability of the normal-pressure phase of calcium with the fcc structure at moderate pressures$P\sim(5$$15) $GPa. Data on the thermopower of calcium in the pressure range up to $9$ GPa have been reported. The thermopower in this pressure range is positive, has a smooth maximum at $5$$6$ GPa, and decreases quite rapidly at higher pressures. The absolute values of the thermopower ($5$$12$ V/K) indicate that calcium in this pressure range is a metal. The difference between the thermopowers in the direct and inverse passages in the range of $5$$7.5$ GPa is fairly noticeable (${\approx} 10%$). The possible reasons for such an anomalous behavior, as well as new calculations of the band structure of calcium, have been discussed.

DOI: https://doi.org/10.7868/S0370274X13080110

Full text: PDF file (356 kB)
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English version:
Journal of Experimental and Theoretical Physics Letters, 2013, 97:8, 490–494

Bibliographic databases:

Document Type: Article
Received: 01.03.2013
Revised: 22.03.2013

Citation: V. V. Brazhkin, O. B. Tsiok, M. V. Magnitskaya, “Thermopower of calcium at high pressures”, Pis'ma v Zh. Èksper. Teoret. Fiz., 97:8 (2013), 561–565; JETP Letters, 97:8 (2013), 490–494

Citation in format AMSBIB
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\paper Thermopower of calcium at high pressures
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\pages 561--565
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\crossref{https://doi.org/10.7868/S0370274X13080110}
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\jour JETP Letters
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    This publication is cited in the following articles:
    1. Magnitskaya M.V., Matsko N.L., Baturin V.S., Uspenskii Yu.A., “Pressure-Induced Semimetallic Behavior of Calcium From Ab Initio Calculations”, 25Th Iupap Conference on Computational Physics (Ccp2013), Journal of Physics Conference Series, 510, IOP Publishing Ltd, 2014, 012028  crossref  isi  scopus
    2. Morozova N.V. Shchennikov V.V. Ovsyannikov S.V., “Features and Regularities in Behavior of Thermoelectric Properties of Rare-Earth, Transition, and Other Metals Under High Pressure Up To 20 Gpa”, J. Appl. Phys., 118:22 (2015), 225901  crossref  adsnasa  isi  elib  scopus
  •       Pis'ma v Zhurnal ksperimental'noi i Teoreticheskoi Fiziki
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