Dimerization of CuGeO[sub 3] in the spin-Peierls state

Journal Article · Mon Aug 01 04:00:00 EDT 1994 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.73.736· OSTI ID:7005610

Hirota, K; Cox, D E; Lorenzo, J E; Shirane, G; Tranquada, J M ^[1]; Hase, M; Uchinokura, K ^[2]; Kojima, H; Shibuya, Y; Tanaka, I ^[3]

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1. Department of Physics, Brookhaven National Laboratory, Upton, New York 11973 (United States)
2. Department of Applied Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113 (Japan)
3. Institute of Inorganic Synthesis, Yamanashi University, Kofu, Yamanashi 400 (Japan)

The dimerization of the Cu ions in the spin-Peierls state of CuGeO[sub 3] below 14 K has been determined by neutron-diffraction measurements. In addition to superlattice reflections with indices [ital h]/2 [ital k] l/2([ital h],[ital k],[ital l] all odd) recently observed in electron and x-ray diffraction studies, we also found peaks for which [ital k]=even. Oxygen displacements in the [ital a]-[ital b] plane of about 0.01 A, accompanied by comparable shifts of the Cu ions along the chain direction [ital c], can be related to the dimerized spin state in a natural fashion.

• DOE Contract Number: AC02-76CH00016
• OSTI ID: 7005610
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 73:5; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
665100 -- Nuclear Techniques in Condensed Matter Physics -- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANGULAR MOMENTUM
ATOMIC DISPLACEMENTS
CHALCOGENIDES
CHEMICAL REACTIONS
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
DIFFRACTION
DIMERIZATION
GERMANIUM COMPOUNDS
GERMANIUM OXIDES
LATTICE PARAMETERS
MAGNETISM
NEUTRON DIFFRACTION
OXIDES
OXYGEN COMPOUNDS
PARTICLE PROPERTIES
PHYSICAL RADIATION EFFECTS
POLYMERIZATION
RADIATION EFFECTS
SCATTERING
SPIN
SUPERLATTICES
TEMPERATURE DEPENDENCE
TRANSITION ELEMENT COMPOUNDS