Magnetic Torque Measurements on Bi2201 Single Crystal in High Magnetic Fields

Shuichi Kawamata, Kiichi Okuda, Takahiko Sasaki, Ryozo Yoshizaki

研究成果: Article査読

3 被引用数 (Scopus)


The magnetic field direction dependence of the magnetic torque in the superconducting state of Bi2Sr1.65La0.35CuO6+δ (Bi2201) single crystal has been measured in several static magnetic fields up to 200 kOe. The applied field dependence of the anisotropy parameter, γ, defined by the square root of the effective mass ratio has been obtained by fitting the magnetic torque curves at 17 K by means of the effective mass model. For Bi2Sr2CaCu2O8+δ (Bi2212), the γ values up to 210 kOe were reported previously. At each field, γ for Bi2201 is larger than that for Bi2212. Since the γ value decreases as the field increases both for Bi2201 and Bi2212, the reduction of γ by the application of the high magnetic field is considered to be common for Bi-based layered superconductors.

ジャーナルJournal of Low Temperature Physics
出版ステータスPublished - 1999

ASJC Scopus subject areas

  • 原子分子物理学および光学
  • 材料科学(全般)
  • 凝縮系物理学


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