Spin transitions in time-dependent regular and random magnetic fields

Citation data:

Physical Review B, ISSN: 1098-0121, Vol: 69, Issue: 10

Publication Year:
2004
Captures 8
Readers 8
Citations 20
Citation Indexes 20
Repository URL:
http://dx.doi.org/10.1103/PhysRevB.69.104414
DOI:
10.1103/physrevb.69.104414
Author(s):
V. L. Pokrovsky; N. A. Sinitsyn
Publisher(s):
American Physical Society (APS)
Tags:
Materials Science; Physics and Astronomy; LOW-TEMPERATURES; Physics
article description
We study the transition between Zeeman levels of an arbitrary spin placed into a regular time-dependent magnetic field and a random field with the Gaussian distribution. One component of the regular field changes its sign at some moment of time, whereas another component does not change substantially. The noise is assumed to be fast. In this assumption we find analytically the ensemble average of the spin density matrix and its fluctuations. © 2004 The American Physical Society.