Excitations in a quantum Hall ferromagnet with strong Coulomb interaction

被引：10

作者：

Iordanski, SV ^{[1
]}

Kasbuba, A ^{[1
]}

机构：

[1] Russian Acad Sci, LD Landau Theoret Phys Inst, Moscow 117334, Russia

来源：

JETP LETTERS | 2002年 / 75卷 / 07期

基金：

俄罗斯基础研究基金会;

关键词：

D O I：

10.1134/1.1485265

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A quantum Hall ferromagnet is considered at integer fillings nu, provided typical Coulomb interaction energy E-c is large compared to the cyclotron energy omega(H). Low-energy collective modes consist of a magnetoplasmon exciton and a gapless spin exciton. All charged excitations have a gap. The activation energy gap for a pair of charged topological excitations-skyrmion and antiskyrmion-is small, i.e., Delta < vomega(H). The electric charge of a skyrmion is the multiple q = evQ, where Q is the integer topological charge. (C) 2002 MAIK "Nauka / Interperiodica".

引用

页码：348 / 353

页数：6

共 18 条

[11] FERMI SURFACE AND SOME SIMPLE EQUILIBRIUM PROPERTIES OF A SYSTEM OF INTERACTING FERMIONS [J].

LUTTINGER, JM .

PHYSICAL REVIEW, 1960, 119 (04) :1153-1163

[12]

PRANGE E, 1987, QUANTUM HALL EFFECT

[13] Exchange-correlation energy for a two-dimensional electron gas in a magnetic field [J].

Price, R ;

DasSarma, S .

PHYSICAL REVIEW B, 1996, 54 (11) :8033-8043

[14]

PUDALOV VM, 1985, ZH EKSP TEOR FIZ, V62, P1079

[15]

Rajaraman R., 1982, SOLITONS INSTANTONS

[16] RETRACTED: Fractional quantum Hall effect in organic molecular semiconductors (Retracted Article. See vol 298, pg 961, 2002) [J].

Schön, JH ;

Kloc, C ;

Batlogg, B .

SCIENCE, 2000, 288 (5475) :2338-2340

[17] SKYRMIONS AND THE CROSSOVER FROM THE INTEGER TO FRACTIONAL QUANTUM HALL-EFFECT AT SMALL ZEEMAN ENERGIES [J].

SONDHI, SL ;

KARLHEDE, A ;

KIVELSON, SA ;

REZAYI, EH .

PHYSICAL REVIEW B, 1993, 47 (24) :16419-16426

[18] Superfluid analogies of cosmological phenomena [J].

Volovik, GE .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 2001, 351 (04) :195-348

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