Quantum Spin Excitations in the Spin-Peierls System CuGeO3.
Quantum Spin Excitations in the Spin-Peierls System CuGeO3.
复制标题
自旋 Peierls 系统 CuGeO3 中的量子自旋激发。
DOI：
10.1103/physrevlett.77.3649
复制
发表时间：
1996
影响因子：
8.6
通讯作者：
S. Bennington
中科院分区：
文献类型：
--
作者：
M. Arai;Masaki Fujita;Mitsuhiro Motokawa;J. Akimitsu;S. Bennington
首次将自旋-Peierls系统CuGe的双自旋子激发的全谱映射为温度的函数。下界和激发连续体的自旋动力学演化是完全不同的。此外，晶格的二聚化在布里渊区边缘的低能界产生了强烈的激发，并在区中心产生了众所周知的自旋能隙开口。
The complete spectrum of the double spinon excitation in the spin-Peierls system CuGe${\mathrm{O}}_{3}$ is mapped as a function of temperature for the first time. The spin dynamics of the lower boundary and the excitation continuum evolve quite differently. Moreover, the dimerization of the lattice produces a sharp excitation in the lower energy boundary at the edge of the Brillouin zone, as well as the well known spin-gap opening at the zone center.