Interface-potential approach to surface states in type-I superconductors

Physical Review B - Condensed Matter and Materials Physics

Volumn 53, Issue 13, 1996, Pages 8599-8603

  Blossey, R ^a   Indekeu, J ^a  

^a UNIVERSITY OF LEUVEN   (Belgium)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0000143224     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.53.8599     Document Type: Article

References (13)

1. See, e.g, J. D. Livingston and W. De Sorbo, in Superconductivity, edited by R. D. Parks (Dekker, New York, 1969), Vol. 2, p. 1235.
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3. J. O. Indekeu and J. M. J. van Leeuwen, Phys. Rev. Lett. 75, 1618 (1995).
4. J. O. Indekeu, Physica C 251, 290 (1995).
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9. I. N. Khlyustikov and A. I. Buzdin, Adv. Phys. 36, 271 (1987). The application to twinning-plane superconductivity requires different boundary conditions than the case of an external surface (which we are primarily concerned with here). Specifically, the magnetic induction at an external surface equals the external field, so that dA/dx(0)=(Formula presented)H. In contrast, for a twinning plane at x=0, the appropriate boundary condition is A(0)=0. This difference in boundary conditions leads, in general, to differences in the wetting phase diagrams for κ>0 [F. Clarysse and J. O. Indekeu (unpublished)]. In the limit κ→0, however, the results for the two geometries coincide.
10. T. M. Mishonov, J. Phys. (France) 51, 447 (1990).
11. We remark that the well-known concern that strain energies can play an important role in wetting problems does not apply here. This concerns applies when the two adsorbed phases differ in structure, such as in adsorption of solid layers from a vapor phase, on top of an arbitrary solid substrate. The slow relaxation, as a function of layer thickness l, of the lattice constant in the adsorbed layer towards the lattice constant of the same solid in bulk then causes a long-ranged elastic contribution to the interface potential V(l) [see, e.g., T. Gittes and M. Schick, Phys. Rev. B 30, 209 (1984).
12. D. Huse, Phys. Rev. B 29, 6985 (1984).
13. J. O. Indekeu, Physica A 183, 439 (1992); for a review, see Int. J. Mod. Phys. B 8, 309 (1994).