Probing spin physics in the quantum Hall regime by heat capacity and magnetotransport measurements

被引：0

作者：

Melinte, S ^{[1
]}

Shayegan, M

Bayot, V

机构：

[1] Princeton Univ, Dept Elect Engn, Princeton, NJ 08544 USA

[2] Catholic Univ Louvain, Res Ctr Microscop & Nanoscop Elect Devices & Mat, B-1348 Louvain, Belgium

来源：

COMPTES RENDUS PHYSIQUE | 2002年 / 3卷 / 06期

关键词：

quantum Hall effect; two-dimensional electron systems; spin dynamics; phase transitions; heat capacity; magnetotransport;

D O I：

10.1016/S1631-0705(02)01355-5

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We review recent heat capacity and magnetotransport experiments on GaAs/AlGaAs heterostructures containing multilayer two-dimensional electron systems (2DESs) in the quantum Hall regime. Emphasis in this article is on the study of the heat capacity near Landau level filling factor nu = 1. We also present a detailed survey of the development of the quantum Hall effect in tilted-magnetic fields for nu less than or similar to 2. Among the novel phenomena we address is the strong coupling between the nuclear spins and the electrons associated with the spin phase transitions of the 2DES at nu = 4/3 and near nu = 1.

引用

页码：667 / 676

页数：10

共 27 条

[1] Evidence of Skyrmion excitations about nu=1 in n-modulation-doped single quantum wells by interband optical transmission [J].

Aifer, EH ;

Goldberg, BB ;

Broido, DA .

PHYSICAL REVIEW LETTERS, 1996, 76 (04) :680-683

[2] OPTICALLY PUMPED NMR EVIDENCE FOR FINITE-SIZE SKYRMIONS IN GAAS QUANTUM-WELLS NEAR LANDAU-LEVEL FILLING NU=1 [J].

BARRETT, SE ;

DABBAGH, G ;

PFEIFFER, LN ;

WEST, KW ;

TYCKO, R .

PHYSICAL REVIEW LETTERS, 1995, 74 (25) :5112-5115

[3] Giant low temperature heat capacity of GaAs quantum wells near Landau level filling nu=1 [J].

Bayot, V ;

Grivei, E ;

Melinte, S ;

Santos, MB ;

Shayegan, M .

PHYSICAL REVIEW LETTERS, 1996, 76 (24) :4584-4587

[4] Critical behavior of nuclear-spin diffusion in GaAs/AlGaAs heterostructures near Landau level filling nu=1 [J].

Bayot, V ;

Grivei, E ;

Beuken, JM ;

Melinte, S ;

Shayegan, M .

PHYSICAL REVIEW LETTERS, 1997, 79 (09) :1718-1721

[5] SPIN CONFIGURATIONS AND QUASIPARTICLE FRACTIONAL CHARGE OF FRACTIONAL-QUANTUM-HALL-EFFECT GROUND-STATES IN THE N = O LANDAU-LEVEL [J].

CLARK, RG ;

HAYNES, SR ;

SUCKLING, AM ;

MALLETT, JR ;

WRIGHT, PA ;

HARRIS, JJ ;

FOXON, CT .

PHYSICAL REVIEW LETTERS, 1989, 62 (13) :1536-1539

[6] Skyrmions in quantum Hall systems with realistic force laws [J].

Cooper, NR .

PHYSICAL REVIEW B, 1997, 55 (04) :R1934-R1937

[7] FRACTIONAL QUANTUM HALL-EFFECT AROUND NU=3/2 - COMPOSITE FERMIONS WITH A SPIN [J].

DU, RR ;

YEH, AS ;

STORMER, HL ;

TSUI, DC ;

PFEIFFER, LN ;

WEST, KW .

PHYSICAL REVIEW LETTERS, 1995, 75 (21) :3926-3929

[8] EVIDENCE FOR A SPIN TRANSITION IN THE V=2/3 FRACTIONAL QUANTUM HALL-EFFECT [J].

EISENSTEIN, JP ;

STORMER, HL ;

PFEIFFER, LN ;

WEST, KW .

PHYSICAL REVIEW B, 1990, 41 (11) :7910-7913

[9] FRACTIONAL QUANTUM HALL-EFFECT AT NU=2/3 AND NU=3/5 IN TILTED MAGNETIC-FIELDS [J].

ENGEL, LW ;

HWANG, SW ;

SAJOTO, T ;

TSUI, DC ;

SHAYEGAN, M .

PHYSICAL REVIEW B, 1992, 45 (07) :3418-3425

[10]

Girvin S. M., 1999, TOPOLOGICAL ASPECTS, P53

← 1 2 3 →