Quasiparticles of Spatially Anisotropic Triangular Antiferromagnets in a Magnetic Field

被引：23

作者：

Kohno, Masanori ^{[1
]}

机构：

[1] Natl Inst Mat Sci, WPI Ctr Mat Nanoarchitecton, Tsukuba, Ibaraki 3050044, Japan

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 103卷 / 19期

关键词：

HEISENBERG CHAIN; BETHE-ANSATZ; CS2CUCL4;

D O I：

10.1103/PhysRevLett.103.197203

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The spectral properties of the spin-1/2 Heisenberg antiferromagnet on an anisotropic triangular lattice in a magnetic field are investigated using a weak-interchain-coupling approach combined with exact solutions of a chain. Dominant modes induced by interchain interactions in a magnetic field behave as quasiparticles which show distinctive features such as anomalous incommensurate ordering and high-energy modes. In terms of them, various unusual features observed in the anisotropic triangular antiferromagnet Cs(2)CuCl(4) in a magnetic field are quantitatively explained in a unified manner.

引用

页数：4

共 31 条

[1] Critical spin liquid at 1/3 magnetization in a spin-1/2 triangular antiferromagnet [J].

Alicea, Jason ;

Fisher, Matthew P. A. .

PHYSICAL REVIEW B, 2007, 75 (14)

[2] RESONATING VALENCE BONDS - NEW KIND OF INSULATOR [J].

ANDERSON, PW .

MATERIALS RESEARCH BULLETIN, 1973, 8 (02) :153-160

[3]

BAILLEUL S, 1994, EUR J SOL STATE INOR, V31, P431

[4] Metal theory [J].

Bethe, H. .

ZEITSCHRIFT FUR PHYSIK, 1931, 71 (3-4) :205-226

[5] Transition rates via Bethe ansatz for the spin-1/2 Heisenberg chain [J].

Biegel, D ;

Karbach, M ;

Müller, G .

EUROPHYSICS LETTERS, 2002, 59 (06) :882-888

[6] Finite-temperature dynamical magnetic susceptibility of quasi-one-dimensional frustrated spin-1/2 Heisenberg antiferromagnets [J].

Bocquet, M ;

Essler, FHL ;

Tsvelik, AM ;

Gogolin, AO .

PHYSICAL REVIEW B, 2001, 64 (09)

[7] Computation of dynamical correlation functions of Heisenberg chains: the gapless anisotropic regime [J].

Caux, JS ;

Hagemans, R ;

Maillet, JM .

JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT, 2005, :83-102

[8] Extended scattering continua characteristic of spin fractionalization in the two-dimensional frustrated quantum magnet Cs2CuCl4 observed by neutron scattering -: art. no. 134424 [J].

Coldea, R ;

Tennant, DA ;

Tylczynski, Z .

PHYSICAL REVIEW B, 2003, 68 (13)

[9] Quasi-1D S=1/2 antiferromagnet Cs2CuCl4 in a magnetic field [J].

Coldea, R ;

Tennant, DA ;

Cowley, RA ;

McMorrow, DF ;

Dorner, B ;

Tylczynski, Z .

PHYSICAL REVIEW LETTERS, 1997, 79 (01) :151-154

[10] Direct measurement of the spin Hamiltonian and observation of condensation of magnons in the 2D frustrated quantum magnet Cs2CuCl4 -: art. no. 137203 [J].

Coldea, R ;

Tennant, DA ;

Habicht, K ;

Smeibidl, P ;

Wolters, C ;

Tylczynski, Z .

PHYSICAL REVIEW LETTERS, 2002, 88 (13) :4

← 1 2 3 4 →