Multiple-spin exchange in a two-dimensional Wigner crystal
β Scribed by Dai Hirashima; Katsunori Kubo; Masafumi Katano
- Publisher
- Elsevier Science
- Year
- 2001
- Tongue
- English
- Weight
- 59 KB
- Volume
- 10
- Category
- Article
- ISSN
- 1386-9477
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π SIMILAR VOLUMES
We consider the instability of a two-dimensional Wigner crystal in a short-period lateral superlattice. To find instabilities, we calculate the phonon spectrum of the electron lattice deformed by a periodic potential. We show that one of the transverse modes of the deformed electron crystal becomes
We study the effect of mass anisotropy on the magnetic ordering of the Wigner crystal phase of low density electron systems in two dimensions at T ΒΌ 0. We apply the instanton approximation to various ring exchange processes, which includes the lowest order Gaussian fluctuations beyond the WKB approx
We separate the contributions of spectral spin diffusion and chemical exchange in the 2D exchange NMR spectra of 87 Rb in the pseudo-spin glass Rb 1Ψx (ND 4 ) x D 2 PO 4 by studying the 87 Rb spin diffusion in the isostructural compound RbH 2 PO 4 at 85K, where the system is frozen in the ferroelect