2001年3月
Spin and charge excitations in incommensurate spin density waves
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
- ,
- ,
- 巻
- 70
- 号
- 3
- 開始ページ
- 866
- 終了ページ
- 876
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1143/JPSJ.70.866
- 出版者・発行元
- PHYSICAL SOC JAPAN
Dynamical longitudinal spin susceptibility X-zz(q,w) and charge density susceptibility X-nn(q,w) are evaluated within random phase approximation for incommensurate spin density waves, or stripes, in two dimensional Hubbard model. Taking into account all possible higher harmonics of the fundamental component of the order parameter,we calculate these quantities for the full ranges of the momentum and energy, and analyze collective modes related to the motion of the stripe line. The anisotropy of the dispersion cone comes from the moving pattern of the stripes, i.e., the compression mode or the meandering mode. In the metallic stripe, there are also nesting excitations of the parallel sheet of the Fermi surfaces. We also discuss the excitation of the silent position in the insulating stripe.
- リンク情報
- ID情報
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- DOI : 10.1143/JPSJ.70.866
- ISSN : 0031-9015
- Web of Science ID : WOS:000167833400042