Volume 72, Number 2, October 2005
|Page(s)||270 - 274|
|Section||Condensed matter: electronic structure, electrical, magnetic, and optical properties|
|Published online||14 September 2005|
Phase diagram and superconducting density of states of the quasi-two-dimensional -wave superconductor in parallel magnetic field
College of Physical Science, Graduate School of the Chinese Academy of Sciences P.O. Box 3908, Beijing 100039, PRC
Accepted: 19 August 2005
We report on results of a theoretical study of the d-wave Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state. A complete temperature vs. magnetic field phase diagram for a model system is obtained. This phase diagram comprises the normal phase, the zero-momentum pairing BCS phase and two types of FFLO phases. The magnetic-field variation of the superconducting density of states, , is studied systematically. In the FFLO phase, we find a characteristic multi-peak structure in , followed by its unique evolution. These highly distinctive features enable us to discriminate between the d-wave FFLO state and other types of superconducting states.
PACS: 74.20.Rp – Pairing symmetries (other than s-wave) / 74.25.Dw – Superconductivity phase diagrams / 74.25.Fy – Transport properties (electric and thermal conductivity, thermoelectric effects, etc.)
© EDP Sciences, 2005
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