Impurities in spin-Peierls systems including lattice relaxation
نویسندگان
چکیده
منابع مشابه
Ordered phases in spin-Peierls systems
The microscopic description of spin-Peierls substances is discussed. Particular attention is paid to the ordered (dimerised and incommensurably modulated) phases. Important points are the adiabatic and the antiadiabatic approach, generic soliton forms, elastic and magnetic interchain couplings. The wealth and the accuracy of experimental information collected for the first inorganic spin-Peierl...
متن کاملModulated Phases in Spin-Peierls Systems
The discovery of the first inorganic spin-Peierls substance CuGeO3 by Hase et al. [1] renewed the interest in the phases of spin-Peierls substances (for reviews, see [2]). The constituting element of these substances are quasi one-dimensional spin chains coupled to the lattice degrees of freedom. The incommensurably modulated (I) phase is particularly interesting since this phase is the most co...
متن کاملMagnetic Structure in Spin-peierls Systems
We study theoretically the magnetic structure in the incommensurate phase of spin-Peierls systems under high magnetic fields, utilizing the analytic soliton lattice solution of the mean-field Pytte Hamiltonian. The temperature and field dependence of the magnetic components of the modulated magnetizaton and staggered spin configuration are calculated.
متن کامل0 Superexchange and lattice distortions in the spin – Peierls system
We present a study of the nearest–neighbor (nn) and next–nearest–neighbor (nnn) exchange constants between magnetic Cu centers of the spin–Peierls material CuGeO 3. The dependence of these constants on the lattice parameters (modified e.g. by variation of temperature, pressure or doping) is calculated. Based on the observation that the bond angles are more susceptible than the bond lengths we p...
متن کاملSpin-Lattice Relaxation Below IK
NMR experiments at very low temperatures have been carried out for a long time, generally not as a general purpose method for analyzing structure and dynamics but rather as a convenient diagnostic tool in the study of substances whose special properties at very low temperatures are of interest. These include most prominently solid hydrogen and solid and liquid helium-3. It must always have been...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 1999
ISSN: 0163-1829,1095-3795
DOI: 10.1103/physrevb.59.13557