Journal
JOURNAL OF LOW TEMPERATURE PHYSICS
Volume 185, Issue 3-4, Pages 354-362Publisher
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10909-016-1637-2
Keywords
Tunneling; Magnetic resonance; Quantum diffusion
Categories
Funding
- National Science Foundation [DMR-1157490]
- [DMR-1303599]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [1303599] Funding Source: National Science Foundation
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We discuss the analysis of the experimental values of the nuclear spin-lattice and spin-spin relaxation times for the tunneling of He as isotopic impurities in solid He. These two relaxation times cannot be described quantitatively using a unique correlation time although it is often presented as such in the literature. In this paper, we discuss how to distinguish the high-frequency portion of the spectral densities that determine the spin-lattice relaxation rates from the low-frequency components which determine the spin-spin relaxation rates.
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