μSR Study of Organic Superconductor λ-(BETS)2GaCl4

3rd International Conference on Functional Materials Science 2016

Sari, D.P.^1,2 ; Asih, R.^1,2 ; Mohm-Tajudin, S.S.^6 ; Adam, N.^6 ; Hiraki, K.^3 ; Ishii, Y.^4 ; Takahashi, T.^3 ; Nakano, T.^2 ; Nozue, Y.^2 ; Sulaiman, S.^3 ; Mohamed-Ibrahim, M.I.^3 ; Watanabe, I.^1,2,5

RIKEN Nishina Center, Hirosawa, Wako, Saitama

351-0198, Japan^1

Department of Physics, Osaka University, Toyonaka, Osaka

560-0043, Japan^2

Department of Physics, Gakushuin University, Toshima, Tokyo

171-8588, Japan^3

College of Engineering, Shibaura Institute of Technology, Saitama

337-8570, Japan^4

Department of Physics, Hokkaido University, Sapporo

060-0810, Japan^5

Universiti Sains Malaysia, Pulau Pinang

11800, Malaysia^6

关键词: Damping behaviors;    Muon spin relaxation;    Nonmagnetics;    Organic superconductor;    Time reversal symmetries;    Time spectrum;    Transverse field;    Zero fields;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/196/1/012047/pdf
DOI  :  10.1088/1757-899X/196/1/012047

来源: IOP

【 摘 要 】

Muon-spin-relaxation (μSR) measurements in the transverse-field (TF) of 30 G were carried out from 7 K down to 1.8 K on the non-magnetic anion-based organic superconductor λ-(BETS)2GaCl4. The TF-μSR time spectrum showed a significant increase with the Gaussian-type damping behavior below the superconducting transition temperature TC= 5 K confirming the bulk SC state with the full volume fraction. The zero-field (ZF) μSR time spectrum did not show any change against the temperature down to 1.7 K, suggesting that the time reversal symmetry of the Cooper pair might not be broken.