Skymions and Quantum Hall Ferromagnets in Improved Composite-Boson Theory

• Ezawa Zyun F.

  Department of Physics, Tohoku University, Sendai 980–8578

• Sasaki Kenichi

  Department of Physics, Tohoku University, Sendai 980–8578

書誌事項

タイトル別名

• Skyrmions and Quantum Hall Ferromagnets in Improved Composite-Boson Theory.

抄録

An improved composite-boson theory of quantum Hall ferromagnets is proposed.It is tightly related with the microscopic wave-function theory. Thecharacteristic feature is that the field operator describes solely thephysical degrees of freedom representing the deviation from the groundstate.It presents a powerful tool to analyze excited states within the lowest Landau level.Excitations include a Goldstone mode and nonlocal topological solitons.Solitons are vortices and Skyrmions carrying the U(1) and SU(2) topologicalcharges, respectively. Their classical configurations are derived fromtheirmicroscopic wave functions. The activation energy of one Skyrmion isestimated, which explains experimental data remarkably well.

収録刊行物

• Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ

  Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ 68 (2), 576-585, 1999

  一般社団法人 日本物理学会

キーワード

• quantum Hall effect
• quantum coherence
• vortices
• Skyrmions

詳細情報

• CRID: 1390282679158268544
• NII論文ID: 110001978692
• NII論文ID: 210000102089
• NII論文ID: 130004537034
• NII書誌ID: AA00704814
• DOI: 10.1143/jpsj.68.576
• BIBCODE: 1999JPSJ...68..576E
• ISSN: 13474073
• ISSN: 00319015
• NDL書誌ID: 4664542
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4664542
• Web Site: http://journals.jps.jp/doi/pdf/10.1143/JPSJ.68.576
• 本文言語コード: en
• データソース種別:
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