Shubnikov-de Haas oscillations and Fermi surface of τ-phase conductors

Takako Konoike; Ken Ichi Iwashita; Issei Nakano; Harukazu Yoshino; Takahiko Sasaki; Yoshio Nogami; James S. Brooks; David Graf; Charles H. Mielke; George C. Papavassiliou; Keizo Murata

doi:10.1016/S1386-9477(02)01004-4

Shubnikov-de Haas oscillations and Fermi surface of τ-phase conductors

Takako Konoike, Ken Ichi Iwashita, Issei Nakano, Harukazu Yoshino, Takahiko Sasaki, Yoshio Nogami, James S. Brooks, David Graf, Charles H. Mielke, George C. Papavassiliou, Keizo Murata

Research output: Contribution to journal › Conference article › peer-review

5 Citations (Scopus)

Abstract

τ-phase organic quasi-two-dimensional conductors have a 4-fold single Fermi surface (FS) from band calculation. At low temperature, the resistivity turns into semiconducting, whereas Shubnikov-de Haas oscillations (SdH) have been observed. The SdH signal includes two frequencies that are inconsistent with the band calculation. Recently, we found the superstructure of this salt below 245 K by X-ray study. This result may explain the contradiction between observation and calculation for the FS.

Original language	English
Pages (from-to)	188-189
Number of pages	2
Journal	Physica E: Low-Dimensional Systems and Nanostructures
Volume	18
Issue number	1-3
DOIs	https://doi.org/10.1016/S1386-9477(02)01004-4
Publication status	Published - May 1 2003
Event	23rd International Conference on Low Temperature Physics - Hiroshima, Japan Duration: Aug 20 2002 → Aug 27 2002

Keywords

Fermi surface
Shubnikov-de Haas oscillation
Superstructure
X-ray

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Condensed Matter Physics

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10.1016/S1386-9477(02)01004-4

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Shubnikov-de Haas oscillations and Fermi surface of τ-phase conductors. / Konoike, Takako; Iwashita, Ken Ichi; Nakano, Issei; Yoshino, Harukazu; Sasaki, Takahiko; Nogami, Yoshio; Brooks, James S.; Graf, David; Mielke, Charles H.; Papavassiliou, George C.; Murata, Keizo.

In: Physica E: Low-Dimensional Systems and Nanostructures, Vol. 18, No. 1-3, 01.05.2003, p. 188-189.

Research output: Contribution to journal › Conference article › peer-review

Konoike, Takako ; Iwashita, Ken Ichi ; Nakano, Issei ; Yoshino, Harukazu ; Sasaki, Takahiko ; Nogami, Yoshio ; Brooks, James S. ; Graf, David ; Mielke, Charles H. ; Papavassiliou, George C. ; Murata, Keizo. / Shubnikov-de Haas oscillations and Fermi surface of τ-phase conductors. In: Physica E: Low-Dimensional Systems and Nanostructures. 2003 ; Vol. 18, No. 1-3. pp. 188-189.

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abstract = "τ-phase organic quasi-two-dimensional conductors have a 4-fold single Fermi surface (FS) from band calculation. At low temperature, the resistivity turns into semiconducting, whereas Shubnikov-de Haas oscillations (SdH) have been observed. The SdH signal includes two frequencies that are inconsistent with the band calculation. Recently, we found the superstructure of this salt below 245 K by X-ray study. This result may explain the contradiction between observation and calculation for the FS.",

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AU - Konoike, Takako

AU - Iwashita, Ken Ichi

AU - Nakano, Issei

AU - Yoshino, Harukazu

AU - Sasaki, Takahiko

AU - Nogami, Yoshio

AU - Brooks, James S.

AU - Graf, David

AU - Mielke, Charles H.

AU - Papavassiliou, George C.

AU - Murata, Keizo

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AB - τ-phase organic quasi-two-dimensional conductors have a 4-fold single Fermi surface (FS) from band calculation. At low temperature, the resistivity turns into semiconducting, whereas Shubnikov-de Haas oscillations (SdH) have been observed. The SdH signal includes two frequencies that are inconsistent with the band calculation. Recently, we found the superstructure of this salt below 245 K by X-ray study. This result may explain the contradiction between observation and calculation for the FS.

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KW - Shubnikov-de Haas oscillation

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KW - X-ray

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