科研之友
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摘要
The nuclear spin relaxation time T-1 is calculated taking account of the contributions from orbital currents of Dirac electrons. We consider a simple model of non-interacting Dirac electron gas in the three-dimensional bulk system. The obtained result shows T-3 dependence of 1/T1 at temperatures T above the energy gap. This temperature dependence agrees qualitatively with the recent beta-NMR experiment on the bulk of the topological insulator Bi0.9Sb0.1.
- 出版日期2017-6-15
