| Issue |
Europhys. Lett.
Volume 72, Number 2, October 2005
|
|
|---|---|---|
| Page(s) | 270 - 274 | |
| Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
| DOI | https://doi.org/10.1209/epl/i2005-10229-5 | |
| 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
Received:
21
March
2005
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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