Admixtures to d-Wave Gap Symmetry in Untwinned YBa2Cu3O7 Superconducting Films Measured by Angle-Resolved Electron Tunneling

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Smilde, H.J.H. and Golubov, A.A. and Ariando and Rijnders, G. and Dekkers, J.M. and Harkema, S. and Blank, D.H.A. and Rogalla, H. and Hilgenkamp, H. (2005) Admixtures to d-Wave Gap Symmetry in Untwinned YBa2Cu3O7 Superconducting Films Measured by Angle-Resolved Electron Tunneling. Physical Review Letters, 95 (25). pp. 257001-1. ISSN 0031-9007

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Abstract:The large anisotropies observed in the in-plane transport properties of untwinned single crystals of YBa2Cu3O6.95 reside in the orthorhombic nature of its band structure which includes CuO chains as well as CuO2 planes. An infinite band model with distinct effective mass in a and b-direction is used to study the a.c. conductivity of a d-wave BCS superconductor. A subdominant s-wave admixture is also included in the gap because both symmetries belong to the same irreducible representation in an orthorhombic system. Parameters are fit to experimental data.
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Copyright:© 2005 The American Physical Society
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Science and Technology (TNW)
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Link to this item:http://purl.utwente.nl/publications/53791
Official URL:http://dx.doi.org/10.1103/PhysRevLett.95.257001
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