Soliton lattice in pure and diluted CuGeO3

被引：103

作者：

Kiryukhin, V ^{[1
]}

Keimer, B ^{[1
]}

Hill, JP ^{[1
]}

Vigliante, A ^{[1
]}

机构：

[1] BROOKHAVEN NATL LAB,DEPT PHYS,UPTON,NY 11973

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 76卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.76.4608

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report a synchrotron x-ray scattering study of the magnetic-field-induced incommensurate phase of the spin-Peierls compound CuGeO3, 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 CuO2 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.

引用

页码：4608 / 4611

页数：4

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