Vortex core structure in strongly correlated superfluidity

S. Yamada, M. Okumura, M. Machida, Y. Ohashi, H. Matsumoto

研究成果: Article査読

1 被引用数 (Scopus)

抄録

In order to study the vortex core electronic structure in high-Tc superconductors, we examine 1-D Hubbard model with trap potential by using the density matrix renormalization group method. Instead of directly treating the vortex, the approach mimics the carrier density depression inside the vortex core via the trap potential and exactly calculate strong correlation effects on the depressed region. Consequently, we find that the Mott state emerges in the central region and the metallic edge surrounds the Mott region. Furthermore, when adding spin imbalance, the calculations reveal that a local antiferromagnetic order covers the Mott state region, and moreover, the antiferromagnetic order modulates with a long periodicity. We expect that these results closely relate to the vortex core electronic structure while their calculation results can be directly compared with atomic Fermi gases loaded on an optical lattice.

本文言語English
ページ(範囲)1237-1240
ページ数4
ジャーナルPhysica C: Superconductivity and its applications
468
15-20
DOI
出版ステータスPublished - 2008 9 15

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • エネルギー工学および電力技術
  • 電子工学および電気工学

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