2011年11月
Volovik effect in a highly anisotropic multiband superconductor: Experiment and theory
PHYSICAL REVIEW B
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- 巻
- 84
- 号
- 18
- 開始ページ
- 184524-1
- 終了ページ
- 184524-10
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1103/PhysRevB.84.184524
- 出版者・発行元
- AMER PHYSICAL SOC
We present measurements of the specific heat coefficient gamma (equivalent to C/T) in the low-temperature limit as a function of an applied magnetic field for the Fe-based superconductor BaFe2(As0.7P0.3)(2). We find both a linear regime at higher fields and a limiting square root H behavior at very low fields. The crossover from a Volovik-like root H to a linear field dependence can be understood from a multiband calculation in the quasiclassical approximation assuming gaps with different momentum dependence on the hole-and electronlike Fermi surface sheets.
- リンク情報
- ID情報
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- DOI : 10.1103/PhysRevB.84.184524
- ISSN : 1098-0121
- J-Global ID : 201202220734631920
- Web of Science ID : WOS:000297102000008