Charge excitations in easy-axis and easy-plane quantum Hall ferromagnets

Koji Muraki; Tadashi Saku; Yoshiro Hirayama

Charge excitations in easy-axis and easy-plane quantum Hall ferromagnets

Koji Muraki, Tadashi Saku, Yoshiro Hirayama

Research output: Contribution to journal › Article › peer-review

Abstract

The charge excitations in Quantum Hall (QH) ferromagnets realized in a symmetric quantum well (QW) were studied. It was shown that easy-plane and easy-axis ferromagnetism occurs for ν = 3 and 4. Activation energy measurements revealed a striking difference between the easy-plane and easy-axis systems in the limit of zero single-particle gap.

Original language	English
Article number	196801
Pages (from-to)	196801/1-196801/4
Journal	Physical Review Letters
Volume	87
Issue number	19
Publication status	Published - 2001 Nov 5
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

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title = "Charge excitations in easy-axis and easy-plane quantum Hall ferromagnets",

abstract = "The charge excitations in Quantum Hall (QH) ferromagnets realized in a symmetric quantum well (QW) were studied. It was shown that easy-plane and easy-axis ferromagnetism occurs for ν = 3 and 4. Activation energy measurements revealed a striking difference between the easy-plane and easy-axis systems in the limit of zero single-particle gap.",

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AB - The charge excitations in Quantum Hall (QH) ferromagnets realized in a symmetric quantum well (QW) were studied. It was shown that easy-plane and easy-axis ferromagnetism occurs for ν = 3 and 4. Activation energy measurements revealed a striking difference between the easy-plane and easy-axis systems in the limit of zero single-particle gap.

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