Spin-Peierls transition in CuGeO[sub 3]: Electron paramagnetic resonance study

Journal Article · Sun May 15 00:00:00 EDT 1994 · Journal of Applied Physics; (United States)

DOI:https://doi.org/10.1063/1.356818· OSTI ID:7274246

Oseroff, S ^[1]; Cheong, S ^[2]; Fondado, A ^[3]; Aktas, B ^[4]; Fisk, Z ^[5]

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1. San Diego State University, San Diego, California 92182 (United States)
2. AT T Bell Laboratories, Murray Hill, New Jersey 07974 (United States)
3. Universidad Santiago de Compostela (Spain)
4. University of California, San Diego, California 92093 (United States)
5. Los Alamos National Laboratories, Los Alamos, New Mexico 87545 (United States)

Measurements of electron paramagnetic resonance (EPR) at 9 and 35 GHz between 2 and 300 K in single crystals and powder samples of CuGeO[sub 3] are presented. Below 14 K a large decrease in the intensity of the Cu[sup 2+] EPR signal is observed. The data can be interpreted as due to a spin-Peierls transition. However, an alternative interpretation in terms of a simple structural transition cannot be ruled out. An opening of an energy gap of [similar to]25 K is calculated from the analysis.

• OSTI ID: 7274246
• Journal Information: Journal of Applied Physics; (United States), Vol. 75:10; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COPPER OXIDES
CRYSTAL-PHASE TRANSFORMATIONS
GERMANIUM OXIDES
ELECTRON SPIN RESONANCE
GHZ RANGE 01-100
MAGNETIC PROPERTIES
MONOCRYSTALS
PEIERLS METHOD
POWDERS
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0000-0013 K
TEMPERATURE RANGE 0013-0065 K
TEMPERATURE RANGE 0065-0273 K
CHALCOGENIDES
COPPER COMPOUNDS
CRYSTALS
FREQUENCY RANGE
GERMANIUM COMPOUNDS
GHZ RANGE
MAGNETIC RESONANCE
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
RESONANCE
TEMPERATURE RANGE
TRANSITION ELEMENT COMPOUNDS
360204* - Ceramics
Cermets
& Refractories- Physical Properties