Evidence of interlayer correlation in spin excitations of quantum Hall bilayers with negligible tunneling

被引：1

作者：

Karmakar, Biswajit ^{[1
,5
]}

Pellegrini, Vittorio ^{[1
,5
]}

Pinczuk, Aron ^{[2
,4
]}

Pfeiffer, Loren N. ^{[3
]}

West, Ken W. ^{[3
]}

机构：

[1] CNR, INFM, NEST, I-56126 Pisa, Italy

[2] Columbia Univ, Dept Phys, New York, NY 10027 USA

[3] Alcatel Lucent, Bell Labs, Murray Hill, NJ 07974 USA

[4] Columbia Univ, Dept Appl Phys & Appl Math, New York, NY 10027 USA

[5] Scuola Normale Super Pisa, I-56126 Pisa, Italy

来源：

PHYSICAL REVIEW B | 2009年 / 80卷 / 24期

基金：

美国国家科学基金会;

关键词：

excitons; light scattering; quantum Hall effect; Zeeman effect; ELECTRON-SYSTEMS;

D O I：

10.1103/PhysRevB.80.241312

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Manifestations of interlayer excitonic coherence in a quantum Hall bilayer with negligible tunneling occur in low-lying spin excitations measured by inelastic light scattering. The observation of quasiparticle spin-flip excitations with energies below the Zeeman gap identifies a composite-fermion metal as the high-temperature phase of the quantum Hall coherent state. Spin-flip intensities enable the determination of a critical temperature for this transformation that is in general agreement with those obtained from charge transport experiments.

引用

页数：4

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