Local tunneling spectroscopy as a signature of the Fulde-Ferrell-Larkin- Ovchinnikov state in s- and d-wave superconductors

Qian Wang*, H. Y. Chen, C. R. Hu, C. S. Ting

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

44 引文 斯高帕斯(Scopus)

摘要

The Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) states for two-dimensional s- and d-wave superconductors (s- and d-SCs) are self-consistently studied under an in-plane magnetic field. While the stripe solution of the order parameter is found to have lower free energy in s-SCs, a square lattice solution appears to be energetically more favorable in the case of d-SCs. At certain symmetric sites, we find that the features in the local density of states (LDOS) can be ascribed to two types of bound states. We also show that the LDOS maps for d-SCs exhibit bias-energy-dependent checkerboard patterns. These characteristics can serve as signatures of the FFLO states.

原文英語
文章編號117006
期刊Physical Review Letters
96
發行號11
DOIs
出版狀態已發佈 - 2006
對外發佈

ASJC Scopus subject areas

  • 一般物理與天文學

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