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

Koji Muraki, Tadashi Saku, Yoshiro Hirayama

Research output: Contribution to journalArticlepeer-review

67 Citations (Scopus)


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 languageEnglish
Article number196801
Pages (from-to)196801/1-196801/4
JournalPhysical Review Letters
Issue number19
Publication statusPublished - 2001 Nov 5
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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