Large spins in anisotropic external fields /
Large spins J, placed into a crystal field of an arbitrary point group, will be studied in semi-classical approximation. It will be shown that despite a large value of the spin J, its spectrum and magnetic properties, in crystalline electric field, depend on a remainder {J/p}, where tile divisor p i...
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| Format: | Thesis Book |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1999.
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| Subjects: | |
| Online Access: | http://proxy.library.tamu.edu/login?url=http://proquest.umi.com/pqdweb?did=733672641&sid=1&Fmt=2&clientId=2945&RQT=309&VName=PQD |
| Summary: | Large spins J, placed into a crystal field of an arbitrary point group, will be studied in semi-classical approximation. It will be shown that despite a large value of the spin J, its spectrum and magnetic properties, in crystalline electric field, depend on a remainder {J/p}, where tile divisor p is the order of the axes of symmetry aligned with the minima of the field. In the framework of the quasi-classical description, the dependence enters via Berry's connection. For S² (2-dimensional unit sphere) parameter space which is the case under study, tile connection is identical to a vector potential produced by the Dirac's magnetic monopole with charge J located at the origins of the sphere. This analogy lets one reformulate the problems to a charged spinless particle bound on the sphere and acted upon by two external gelds, namely, tile crystalline electric field and the magnetic field of the monopole. Careful attention will be given to the experimental observational of the predicted differences. |
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| Item Description: | Vita. "Major Subject: Physics". |
| Physical Description: | xi, 82 leaves : illustrations ; 28 cm. Issued also on microfiche from University Microfilm Inc. |
| Bibliography: | Includes bibliographical references (leaves 71-73). |