Pure exciton- and magnon-assisted optical transitionsin the one-dimensional antiferromagnet CsMnCl/sub 3/x2H/sub 2/O (CMC)

Journal Article · Mon Jun 01 04:00:00 EDT 1981 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.23.6075· OSTI ID:6342938

Jia, W; Strauss, E; Yen, W M

We report the first observation of the pure electronic transitions in the /sup 4/T/sub 1/ state of Mn/sup 2 +/ ions in the one-dimensional antiferromagnet CsMnCl/sub 3/x2H/sub 2/O (CMC) in the absorption, excitation, and fluorescence spectra. Selection rules are analyzed: the exciton transition is electric dipole allowed, the magnon sideband in emission is a single-ion process, and is both electric and magnetic dipole allowed; however, the magnon sideband in absorption is an ion-pair process and is a weakened-electric-dipole and magnetic-dipole transition. The density of magnon states and the line profile of the magnon sideband have been calculated. The results explain the peculiar line shapes of the observed sideband emission. An exponential decay of the exciton is observed with a lifetime of 0.576 ms.

• Research Organization: Department of Physics, University of Wisconsin, Madison, Wisconsin 53706
• OSTI ID: 6342938
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 23:11; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
ABSORPTION SPECTRA
ALKALI METAL COMPOUNDS
ANTIFERROMAGNETIC MATERIALS
CESIUM CHLORIDES
CESIUM COMPOUNDS
CHLORIDES
CHLORINE COMPOUNDS
ENERGY-LEVEL DENSITY
ENERGY-LEVEL TRANSITIONS
EXCITATION
EXCITONS
FLUORESCENCE
HALIDES
HALOGEN COMPOUNDS
HYDRATES
LIFETIME
LINE WIDTHS
LUMINESCENCE
MAGNETIC MATERIALS
MAGNONS
MANGANESE CHLORIDES
MANGANESE COMPOUNDS
MANGANESE HALIDES
MATERIALS
QUASI PARTICLES
SELECTION RULES
SPECTRA
TRANSITION ELEMENT COMPOUNDS