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Shubnikov-De Haas oscillations of the quasi-two-dimensional organic conductor beta-(BEDT-TTF)(2)I-3 under pressure

Title
Shubnikov-De Haas oscillations of the quasi-two-dimensional organic conductor beta-(BEDT-TTF)(2)I-3 under pressure
Authors
Kang, W.Jo, Y. J.Kang, Haeyong
Ewha Authors
강원조연정
SCOPUS Author ID
강원scopus
Issue Date
2007
Journal Title
JOURNAL OF THE KOREAN PHYSICAL SOCIETY
ISSN
0374-4884JCR Link
Citation
vol. 50, no. 1, pp. 97 - 101
Keywords
Shubnikov-de Haas oscillationsorganic superconductorFermi surfacemagnetoresistance
Publisher
KOREAN PHYSICAL SOC
Indexed
SCI; SCIE; SCOPUS; KCI WOS scopus
Abstract
We measured the Shubnikov-de Haas oscillations of the quasi-two-dimensional organic conductor beta-(BEDT-TTF)(2)I-3 under a hydrostatic pressure of 7 kbar. The amplitude of the oscillations was greatly reduced from its ambient pressure value, but the quasi-two-dimensional nature was preserved in spite of a five-fold decrease in T-c. While the fundamental frequency increased by 6.3 %, reflecting the compressibility under pressure, the ratio of the modulation frequency to the fundamental frequency decreased from 9.9 x 10(-3) to 8.3 x 10(-3). Pressure not only compressed the material but also rendered the Fermi surface more two-dimensional.
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자연과학대학 > 물리학전공 > Journal papers
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