Soliton lattice in pure and diluted CuGeO{sub 3}

Journal Article · Sat Jun 01 04:00:00 EDT 1996 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.76.4608· OSTI ID:285772

Kiryukhin, V; Keimer, B ^[1]; Hill, J P; Vigliante, A ^[2]

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1. Department of Physics, Princeton University, Princeton, New Jersey 08544 (United States)
2. Department of Physics, Brookhaven National Laboratory, Upton, New York 11973 (United States)

We report a synchrotron x-ray scattering study of the magnetic-field-induced incommensurate phase of the spin-Peierls compound CuGeO{sub 3}, in magnetic fields up to 13 T. By measuring first and third harmonics of the incommensurate Bragg reflections as a function of field we show that the lattice modulation has the form of a soliton lattice. The soliton half-width, 13.6 lattice spacings, is surprisingly large. Dilution of the CuO{sub 2} spin-1/2 chains with spin-0 (Zn) and spin-1 (Ni) impurities results in a short-range-ordered incommensurate state with an anisotropic correlation length comparable to the average impurity separation. {copyright} {ital 1996 The American Physical Society.}

• Research Organization: Brookhaven National Laboratory
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 285772
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 24 Vol. 76; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COMMENSURATE-INCOMMENSURATE TRANSFORMATIONS
COPPER OXIDES
GERMANIUM OXIDES
IMPURITIES
MAGNETIC FIELDS
PHASE TRANSFORMATIONS
SOLITONS
SPIN ORIENTATION
SUPERLATTICES
SYNCHROTRON RADIATION
X-RAY DIFFRACTION
XRD
ZINC ADDITIONS