Nuclear Spin Diffusion and Its Thermodynamic Quenching in the Field Gradients of a Type-II Superconductor
- 5 November 1973
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 31 (19) , 1204-1207
- https://doi.org/10.1103/physrevlett.31.1204
Abstract
We have observed anomalously rapid relaxation of dipole-dipole energy in mixed-state superconducting vanadium. We show that spin diffusion driven by an inhomogeneous magnetic field uses spin-spin energy as a heat sink. Coupled differential equations are proposed for magnetization and spin-spin energy, and the diffusion coefficient is inferred from our measurements. It is concluded that spin diffusion cannot be a relaxation mechanism for magnetization in the mixed state, as previously assumed.Keywords
This publication has 10 references indexed in Scilit:
- Temperature Dependence of the Magnetic Field at a Vortex Center in Type-II Superconducting Vanadium By NMRPhysical Review Letters, 1970
- NMR relaxation times measurements of protons in superconducting powdersSolid State Communications, 1969
- Nuclear Spin Thermodynamics in the Rotating FrameScience, 1969
- Moment-Method Calculation of Magnetization and Interspin-Energy DiffusionPhysical Review B, 1969
- Moment-Method Calculation of Magnetization and Interspin-Energy DiffusionPhysical Review B, 1968
- Nuclear Spin Relaxation in Superconducting Mixed-State VanadiumPhysical Review B, 1967
- Nuclear Relaxation Measurements in the Superconducting and Normal States of SomeCompoundsPhysical Review B, 1967
- Experimental Evidence for a New Nuclear Spin-Lattice Relaxation Process in Type-II Superconductors at Low TemperaturesPhysical Review Letters, 1966
- Bound Fermion states on a vortex line in a type II superconductorPhysics Letters, 1964
- On the interaction of nuclear spins in a crystalline latticePhysica, 1949