Magnetic order and ballistic spin transport in a sine-Gordon spin chain

被引：8

作者：

Huddart, B. M. ^{[1
]}

Gomilsek, M. ^{[1
,2
]}

Hicken, T. J. ^{[1
]}

Pratt, F. L. ^{[3
]}

Blundell, S. J. ^{[4
]}

Goddard, P. A. ^{[5
]}

Kaech, S. J. ^{[6
]}

Manson, J. L. ^{[6
]}

Lancaster, T. ^{[1
]}

机构：

[1] Univ Durham, Ctr Mat Phys, Durham DH1 3LE, England

[2] Jozef Stefan Inst, Jamova C 39, SI-1000 Ljubljana, Slovenia

[3] STFC Rutherford Appleton Lab, ISIS Facil, Didcot OX11 0QX, Oxon, England

[4] Univ Oxford, Dept Phys, Clarendon Lab, Parks Rd, Oxford OX1 3PU, England

[5] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England

[6] Eastern Washington Univ, Dept Chem & Biochem, Cheney, WA 99004 USA

来源：

PHYSICAL REVIEW B | 2021年 / 103卷 / 06期

基金：

欧洲研究理事会; 美国国家科学基金会; 英国工程与自然科学研究理事会;

关键词：

FIELD-INDUCED GAP; LOW-TEMPERATURE; RESONANCE; POLYMERS; DYNAMICS; BENZOATE;

D O I：

10.1103/PhysRevB.103.L060405

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report the results of muon-spin spectroscopy (mu+SR) measurements on the staggered molecular spin chain [pym-Cu(NO3)(2)(H2O)(2)] (pym = pyrimidine), a material previously described using sine-Gordon field theory. Zero-field mu+SR reveals a long range magnetically ordered ground state below a transition temperature T-N = 0.23(1) K. Using longitudinal-field (LF) mu+SR we investigate the dynamic response in applied magnetic fields 0 < B < 500 mT and find evidence for ballistic spin transport. Our LF mu+SR measurements on the chiral spin chain [Cu(pym)(H2O)(4)]SiF6 center dot H2O instead demonstrate one-dimensional spin diffusion, and the distinct spin transport in these two systems suggests that additional anisotropic interactions play an important role in determining the nature of spin transport in S = 1/2 antiferromagnetic chains.

引用

页数：6

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