Published May 10, 1993
| Version v1
Journal article
Evidence for the role of fluxoids in enhancing NMR spin-lattice relaxation and implications for intrinsic pinning of the flux lattice in organic superconductors
- 1. Chemistry and Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
- 2. Department of Physics and Materials Research Laboratory, University of Illinois at Urbana-Champaign, 1110 West Green Street, Urbana, Illinois, 61801-3080 (United States)
Description
The authors report 1H NMR spin-lattice relaxation rates, T1-1, in the quasi-2D organic superconductor κ-(ET)2Cu[N(CN)2]Br (Tc=11.6 K), for an aligned single crystal. The relaxation in the normal-state obeys the Korringa law (T1T=const). In the superconducting state, for weak fields (H0=0.59 T), T1-1 is greatly enhanced and displays strong orientation dependence for field directions nearly parallel to the superconducting layers. This behavior indicates that motion of the fluxoid system is the cause of the extra relaxation, and is evidence for a ''lock-in'' transition of the flux lattice
Additional details
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 70
- Journal Issue
- 19
- Journal Page Range
- p. 2956-2959.
- ISSN
- 0031-9007
- CODEN
- PRLTAO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 24060862
- Subject category
- S36: MATERIALS SCIENCE; S74: ATOMIC AND MOLECULAR PHYSICS; S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- ANISOTROPY; BEDT-TTF; HYDROGEN 1; MONOCRYSTALS; MOTION; NUCLEAR MAGNETIC RESONANCE; ORGANIC SUPERCONDUCTORS; SPIN-LATTICE RELAXATION; TEMPERATURE DEPENDENCE; VORTICES
- Descriptors DEC
- CRYSTALS; HETEROCYCLIC COMPOUNDS; HYDROGEN ISOTOPES; ISOTOPES; LIGHT NUCLEI; MAGNETIC RESONANCE; NUCLEI; ODD-EVEN NUCLEI; ORGANIC COMPOUNDS; ORGANIC SULFUR COMPOUNDS; RELAXATION; RESONANCE; STABLE ISOTOPES; SUPERCONDUCTORS