A possible magnetic phase with scalar chirality in solid 3He layers

被引：9

作者：

Kubo, K ^{[1
]}

Sakamoto, H ^{[1
]}

Momoi, T ^{[1
]}

Niki, K ^{[1
]}

机构：

[1] Univ Tsukuba, Inst Phys, Tsukuba, Ibaraki 305, Japan

来源：

JOURNAL OF LOW TEMPERATURE PHYSICS | 1998年 / 111卷 / 3-4期

关键词：

D O I：

10.1023/A:1022249501044

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We study quantum effects in a system of S = 1/2 spins with two-, three and four-spin exchange interactions on the triangular lattice, a possible model of the nuclear magnetism of solid He-3 layers. The ground state phases found in our previous wort are studied by using the linear spin-wave theory. The "uuud" state shows a very flat spin-wave dispersion, which suggests that this state, though focally stable, will not survive non-linear quantum effects. The "tetrahedral" state, which has long-range order of a scalar chirality, is found to be stable against spin wave fluctuations. The ground state energies of different phases are compared. Results of numerical analysis of finite size clusters are also presented.

引用

页码：583 / 588

页数：6

共 19 条

[1] SPECIFIC-HEAT AND CURIE-TEMPERATURE EVALUATION ON TRIANGULAR LATTICE - EXCHANGE FREQUENCIES FOR HE-3 ADSORBED ON GRAFOIL, EVALUATED BY PATH INTEGRAL TECHNIQUES [J].