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Title: Elementary excitations in magnetically ordered systems with orbital degeneracy

Abstract

The generalized Holstein-Primakoff transformation is used to develop a quantum flavor wave theory for spin systems with orbital degeneracy. Elementary excitations of ordered ground states consist of spin, orbital, and spin-orbital waves. Spin and spin-orbital waves couple to each other due to orbital anisotropy and Hund[close quote]s rule, resulting in modes observable by inelastic neutron scattering. In the SU(4) limit, flavor waves are dispersionless along one or more directions, and give rise to quantum fluctuations of reduced dimensionality. [copyright] [ital 1999] [ital The American Physical Society]

Authors:
;  [1];  [2];  [3];  [1]
  1. (Department of Physics, University of Cincinnati, Cincinnati, Ohio 45221-0011 (United States))
  2. (Laboratoire de Physique Quantique, Universite Paul Sabatier, 31062 Toulouse Cedex (France))
  3. (Department of Physics, University of Cincinnati, Cincinnati, Ohio 45221-0011 (United States) College of Science, Nanjing University of Aeronautics and Astronautics, Nanjing, Peoples Republic of (China))
Publication Date:
OSTI Identifier:
6270286
Alternate Identifier(s):
OSTI ID: 6270286
Resource Type:
Journal Article
Journal Name:
Physical Review, B: Condensed Matter
Additional Journal Information:
Journal Volume: 60:9; Journal ID: ISSN 0163-1829
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; GROUND STATES; NEUTRON DIFFRACTION; QUANTUM MECHANICS; SOLIDS; SPIN WAVES; SU-4 GROUPS; COHERENT SCATTERING; DIFFRACTION; ENERGY LEVELS; LIE GROUPS; MECHANICS; SCATTERING; SU GROUPS; SYMMETRY GROUPS 665000* -- Physics of Condensed Matter-- (1992-)

Citation Formats

Joshi, A., Ma, M., Mila, F., Shi, D.N., and Zhang, F.C. Elementary excitations in magnetically ordered systems with orbital degeneracy. United States: N. p., 1999. Web. doi:10.1103/PhysRevB.60.6584.
Joshi, A., Ma, M., Mila, F., Shi, D.N., & Zhang, F.C. Elementary excitations in magnetically ordered systems with orbital degeneracy. United States. doi:10.1103/PhysRevB.60.6584.
Joshi, A., Ma, M., Mila, F., Shi, D.N., and Zhang, F.C. Wed . "Elementary excitations in magnetically ordered systems with orbital degeneracy". United States. doi:10.1103/PhysRevB.60.6584.
@article{osti_6270286,
title = {Elementary excitations in magnetically ordered systems with orbital degeneracy},
author = {Joshi, A. and Ma, M. and Mila, F. and Shi, D.N. and Zhang, F.C.},
abstractNote = {The generalized Holstein-Primakoff transformation is used to develop a quantum flavor wave theory for spin systems with orbital degeneracy. Elementary excitations of ordered ground states consist of spin, orbital, and spin-orbital waves. Spin and spin-orbital waves couple to each other due to orbital anisotropy and Hund[close quote]s rule, resulting in modes observable by inelastic neutron scattering. In the SU(4) limit, flavor waves are dispersionless along one or more directions, and give rise to quantum fluctuations of reduced dimensionality. [copyright] [ital 1999] [ital The American Physical Society]},
doi = {10.1103/PhysRevB.60.6584},
journal = {Physical Review, B: Condensed Matter},
issn = {0163-1829},
number = ,
volume = 60:9,
place = {United States},
year = {1999},
month = {9}
}