CMT77

Tunneling density of states in d-wave superconductors with rough surfaces

• Author(s): M. Palumbo, L. J. Buchholtz, D. Rainer and J. A. Sauls
• Date: February 1996
• Journal: Czech J Phys (1996) 46: 1065-1066 [DOI]
• Abstract: We discuss the novel surface states which may occur near a boundary in a d-wave superconductor and how these states are affected by surface diffusivity. The surface roughness is taken into account via the ``Randomly Rippled Wall Model'', and all calculations are performed within the quasiclassical theory of superconductivity. We consider a uniaxial system with abulk order parameter of d_{x² - y²} symmetry. Our analysis focuses on the emergence of surface states of a symmetry other than that of the stable bulk phase when more than one attractive symmetry channel is present. The conditions for the stability of the various surface states and their impact on the tunneling characteristics are discussed.

• Comment: Proceedings of the 21^st International Conference on Low Temperature Physics, Prague, August 8-14, 1996; 2 pages with 2 figures.

• Eprint: [PDF]

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