MICROSCOPIC MODEL OF NONRECIPROCAL OPTICAL EFFECTS IN CR2O3

Authors
MUTHUKUMAR VN VALENTI R GROS C
Citation
Vn. Muthukumar et al., MICROSCOPIC MODEL OF NONRECIPROCAL OPTICAL EFFECTS IN CR2O3, Physical review letters, 75(14), 1995, pp. 2766-2769
Citations number
20
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
75
Issue
14
Year of publication
1995
Pages
2766 - 2769
Database
ISI
SICI code
0031-9007(1995)75:14<2766:MMONOE>2.0.ZU;2-I
Abstract
We develop a microscopic model that explains nonreciprocal optical eff ects in centrosymmetric Cr2O3. It is shown that light can couple direc tly to the antiferromagnetic order parameter. This coupling is mediate d by the spin-orbit interaction and involves an interplay between the breaking of inversion symmetry due to the antiferromagnetic order para meter and the trigonal field contribution to the ligand field at the C r3+ ion.