TY - JOUR
T1 - Giant Shubnikov-de Haas oscillation in τ-conductors
AU - Konoike, T.
AU - Iwashita, K.
AU - Sasaki, T.
AU - Hiraki, K.
AU - Takahashi, T.
AU - Papavassiliou, G. C.
AU - Yoshino, H.
AU - Murata, Keizo
N1 - Funding Information:
This work was carried out as a part of ‘Research for the Future’ project, JSPS-RFTF97P00105, supported by Japan Society for the Promotion of Science. One of the authors (TK) was supported by Research Fellowships of the Japan Society for the Promotion of Science for Young Scientists.
PY - 2003/3/13
Y1 - 2003/3/13
N2 - The magnetoresistance (MR) of two-dimensional organic τ-conductors, τ-(EDO-S,S-DMEDT-TTF)2(AuBr2)1+y and τ-(P-S,S-DMEDT-TTF)2(AuBr2)1+y (y ∼ 0.75) in high magnetic field was investigated. In both salts, large negative MR and Shubnikov-de Haas (SdH) oscillation were observed though the resistance of these compounds show upturn at low temperature. Especially for latter salt, the amplitude of SdH oscillation is so giant (|Δρ/ρ0| ∼ 30%). From the frequency of the SdH, the area of Fermi surface for each compound is calculated to be 0.65, 6.1 and 6.8%, respectively. These values are not consistent with the previously calculated value of 12.5% for single star-shaped Fermi surface for y ∼ 0.75.
AB - The magnetoresistance (MR) of two-dimensional organic τ-conductors, τ-(EDO-S,S-DMEDT-TTF)2(AuBr2)1+y and τ-(P-S,S-DMEDT-TTF)2(AuBr2)1+y (y ∼ 0.75) in high magnetic field was investigated. In both salts, large negative MR and Shubnikov-de Haas (SdH) oscillation were observed though the resistance of these compounds show upturn at low temperature. Especially for latter salt, the amplitude of SdH oscillation is so giant (|Δρ/ρ0| ∼ 30%). From the frequency of the SdH, the area of Fermi surface for each compound is calculated to be 0.65, 6.1 and 6.8%, respectively. These values are not consistent with the previously calculated value of 12.5% for single star-shaped Fermi surface for y ∼ 0.75.
KW - Magnetoresistance
KW - Organic conductor
KW - Shubnikov-de Haas oscillation
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U2 - 10.1016/S0379-6779(02)00240-0
DO - 10.1016/S0379-6779(02)00240-0
M3 - Conference article
AN - SCOPUS:0037435273
SN - 0379-6779
VL - 133-134
SP - 157
EP - 158
JO - Synthetic Metals
JF - Synthetic Metals
T2 - ISCOM 2001
Y2 - 10 September 2001 through 14 September 2001
ER -