TY - JOUR
T1 - Suppression of superconductivity by X-ray irradiation induced disorders in organic superconductor κ - (BEDT - TTF)2Cu[N(CN)2]Br
AU - Sano, Koichiro
AU - Sasaki, Takahiko
AU - Yoneyama, Naoki
AU - Kobayashi, Norio
N1 - Funding Information:
A part of this work was performed at HFLSM, IMR, Tohoku University. This work was partly supported by a Grant-in-Aid for Scientific Research (no. 20340085) from JSPS.
PY - 2010/6/1
Y1 - 2010/6/1
N2 - We report the X-ray irradiation effect on the superconductivity in the organic superconductor κ-(BEDT-TTF)2Cu[N(CN)2]Br which is located nearby the Mott insulator-metal transition. The superconducting transition temperature Tc decreases almost linearly with increasing irradiation dose. The suppression rate of Tc for irradiation dose is larger than that reported so far in κ-(BEDT-TTF)2Cu(NCS) 2. The difference in the suppression of Tc between two organic superconductors might result from the different anion molecules, which may be altered by the X-ray irradiation, and the different strength of the electron correlation.
AB - We report the X-ray irradiation effect on the superconductivity in the organic superconductor κ-(BEDT-TTF)2Cu[N(CN)2]Br which is located nearby the Mott insulator-metal transition. The superconducting transition temperature Tc decreases almost linearly with increasing irradiation dose. The suppression rate of Tc for irradiation dose is larger than that reported so far in κ-(BEDT-TTF)2Cu(NCS) 2. The difference in the suppression of Tc between two organic superconductors might result from the different anion molecules, which may be altered by the X-ray irradiation, and the different strength of the electron correlation.
KW - Disorder
KW - Organic superconductor
KW - X-ray irradiation
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U2 - 10.1016/j.physb.2009.10.044
DO - 10.1016/j.physb.2009.10.044
M3 - Article
AN - SCOPUS:84859884435
SN - 0921-4526
VL - 405
SP - S279-S281
JO - Physica B: Condensed Matter
JF - Physica B: Condensed Matter
IS - 11 SUPPL.
ER -