HUSCAP logo Hokkaido Univ. logo

Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Science / Faculty of Science >
Peer-reviewed Journal Articles, etc >

Microscopic observation of superconducting fluctuations in kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]Br by C-13 NMR spectroscopy

Files in This Item:
PhysRevB_89_165141.pdf333.14 kBPDFView/Open
Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/56546

Title: Microscopic observation of superconducting fluctuations in kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]Br by C-13 NMR spectroscopy
Authors: Kobayashi, T. Browse this author
Ihara, Y. Browse this author →KAKEN DB
Saito, Y. Browse this author
Kawamoto, A. Browse this author →KAKEN DB
Issue Date: 30-Apr-2014
Publisher: American Physical Society
Journal Title: Physical Review B
Volume: 89
Issue: 16
Start Page: 165141
Publisher DOI: 10.1103/PhysRevB.89.165141
Abstract: We performed C-13-NMR experiment and measured spin-lattice relaxation rate divided by temperature 1/T1T near the superconducting (SC) transition temperature T-c in kappa-(BEDT-TTF)(2)Cu[N(CN)(2)] Br (kappa-Br salt), and kappa-(BEDT-TTF)(2)Cu(NCS)(2) (kappa-NCS salt). We observed the reduction of 1/T1T starting at the temperature higher than T-c in kappa-Br salt. Microscopic observation of the quasiparticle density of states in the fluctuating SC state revealed the effects of short-range Cooper pairs induced in the normal state to the quasiparticle density of states. We also performed systematic measurements in the fields both parallel and perpendicular to the conduction plane in kappa-Br and kappa-NCS salts, and confirmed that the reduction of 1/T1T above T-c is observed only in kappa-Br salt regardless of the external field orientation.
Rights: ©2014 American Physical Society
Type: article
URI: http://hdl.handle.net/2115/56546
Appears in Collections:理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 井原 慶彦

Export metadata:

OAI-PMH ( junii2 , jpcoar )

MathJax is now OFF:


 

 - Hokkaido University