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 50 条

[31] Goldstone mode relaxation in a quantum hall ferromagnet due to hyperfine interaction with nuclei [J].

Dickmann, S. .

JETP LETTERS, 2011, 93 (02) :86-90

[32] Goldstone mode relaxation in a quantum hall ferromagnet due to hyperfine interaction with nuclei [J].

S. Dickmann .

JETP Letters, 2011, 93 :86-90

[33] Metastable phase in the quantum Hall ferromagnet [J].

Piazza, V ;

Pellegrini, V ;

Beltram, F ;

Wegscheider, W .

SOLID STATE COMMUNICATIONS, 2003, 127 (02) :163-168

[34] Quantum Hall ferromagnet in a parabolic well [J].

Gusev, GM ;

Quivy, AA ;

Lamas, TE ;

Leite, JR ;

Estibals, O ;

Portal, JC .

PHYSICAL REVIEW B, 2003, 67 (15)

[35] Ultrafast spectroscopy of the quantum Hall ferromagnet [J].

Su, B. ;

Schroeter, P. ;

Heitmann, D. ;

Perakis, I. E. ;

Wegscheider, W. ;

Schueller, C. .

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 2006, 34 (1-2) :381-384

[36] Coulomb drag of edge excitations in the Chern-Simons theory of the fractional quantum Hall effect [J].

Orgad, D ;

Levit, S .

PHYSICAL REVIEW B, 1996, 53 (12) :7964-7969

[37] Collective intersubband excitations in quantum wells: Coulomb interaction versus subband dispersion [J].

Nikonov, DE ;

Imamoglu, A ;

Butov, LV ;

Schmidt, H .

PHYSICAL REVIEW LETTERS, 1997, 79 (23) :4633-4636

[38] Quantum breathers and intrinsic localized excitations in an isotropic ferromagnet with octupole-dipole interaction [J].

Djoufack, Z., I ;

Nguenang, J. P. ;

Kenfack-Jiotsa, A. .

PHYSICA B-CONDENSED MATTER, 2020, 598

[39] Transport through a metallic quantum dot in the limit of strong Coulomb interaction [J].

Isawa, Y ;

Horii, H .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2000, 69 (03) :655-658

[40] Effects of long-range coulomb interaction on the quantum transport in fractional quantum Hall edges [J].

Imura, K ;

Nagaosa, N .

SOLID STATE COMMUNICATIONS, 1997, 103 (12) :663-668

← 1 2 3 4 5 →