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Fourfold symmetry in the ab-plane of the upper critical field for the high-Tc cuprates (1996)

Noji, T. ; Takabayashi, T. ; Nishizaki, T. ; [et al.]

Springer

Journal of low temperature physics 105 (1996), S. 533-538

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ISSN: 1573-7357

Keywords: 74.60.Ec ; 14.72.−h

Source: Springer Online Journal Archives 1860-2000

Topics: Physics

Notes: Abstract We have found clear anisotropy in the ab plane with fourfold symmetry of the resistive superconducting transition under magnetic fields for single-crystal Pb2Sr2Y0.62Ca0,38Cu3O8, which is regarded as anisotropy of the upper critical field Hc2. This is not only qualitatively but also quantitatively similar to that formerly observed in La1.86Sr0.14CuO4. The observed fourfold symmetry is explained as being mainly due to the anisotropy of the superconducting energy gap owing to $$d_{x^2 - y^2 }$$ pairing. Hc2, one of the bulk properties, supports $$d_{x^2 - y^2 }$$ pairing in the high-Tc superconductivity.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00768440

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