Dynamic properties of magnets with spin S=3/2 and non-Heisenberg isotropic interaction

被引：23

作者：

Kosmachev, O. A. ^{[1
]}

Fridman, Yu. A. ^{[1
]}

Galkina, E. G. ^{[2
]}

Ivanov, B. A. ^{[3
]}

机构：

[1] Vernadsky Taurida Natl Univ, Simferopol 295007, Russia

[2] Natl Acad Sci Ukraine, Inst Phys, UA-03028 Kiev, Ukraine

[3] Natl Acad Sci Ukraine, Inst Magnetism, UA-03142 Kiev, Ukraine

来源：

JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS | 2015年 / 120卷 / 02期

基金：

俄罗斯基础研究基金会;

关键词：

DISORDERED PHASE; NEMATIC STATES; SYMMETRY; RELAXATION;

D O I：

10.1134/S1063776115010021

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The dynamic properties of a magnet with magnetic-ion spin of 3/2 and an isotropic spin interaction of a general form have been investigated. Only four phase states can be realized in the system under consideration at various relationships between the material parameters: the ferro- and antiferromagnetic phases with saturated spin and the states with tensor order parameters, the nematic and antinematic ones. For these phases, the spontaneous symmetry breaking is determined by the octupole order parameter containing the mean values trilinear in spin operator components at a given site. The spectra of elementary excitations have been determined in all phases. Additional branches of excitations arise in all four phase states.

引用

页码：281 / 295

页数：15

共 72 条

[1]

Andreev A. F., 1980, Soviet Physics - Uspekhi, V23, P21, DOI 10.1070/PU1980v023n01ABEH004859

[2]

Andreev A. F., 1984, Soviet Physics - JETP, V60, P267

[3] Dynamics and relaxation in spin nematics [J].

Bar'yakhtar, V. G. ;

Butrim, V. I. ;

Kolezhuk, A. K. ;

Ivanov, B. A. .

PHYSICAL REVIEW B, 2013, 87 (22)

[4] Classifying novel phases of spinor atoms [J].

Barnett, Ryan ;

Turner, Ari ;

Demler, Eugene .

PHYSICAL REVIEW LETTERS, 2006, 97 (18)

[5]

BARYAKHTAR IV, 1983, ZH EKSP TEOR FIZ+, V85, P328

[6]

Baryakhtar V. G., 1984, GREENS FUNCTIONS THE

[7]

Belov K. P., 1979, ORIENTATIONAL TRANSI

[8] Probable absence of a quadrupolar spin-nematic phase in the bilinear-biquadratic spin-1 chain -: art. no. 054433 [J].

Buchta, K ;

Fáth, G ;

Legeza, O ;

Sólyom, J .

PHYSICAL REVIEW B, 2005, 72 (05)

[9] Critical dynamics and relaxation of elementary excitations of the nematic phase of a non-heisenberg magnet with spin S=1 [J].

Butrim, V. I. ;

Ivanov, B. A. ;

Kuznetsov, A. S. .

JETP LETTERS, 2010, 92 (03) :151-155

[10] Magnon relaxation in a spin nematic [J].

Butrim, V. I. ;

Ivanov, B. A. ;

Kuznetsov, A. S. ;

Khymyn, R. S. .

LOW TEMPERATURE PHYSICS, 2008, 34 (12) :997-1004

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