Low-Temperature Magnetic Penetration Depth in d-Wave Superconductors: Zero-Energy Bound State and Impurity Effects

Details Low-Temperature Magnetic Penetration Depth in d-Wave Superconductors: Zero-Energy Bound State and Impurity Effects Low-Temperature Magnetic Penetration Depth in d-Wave Superconductors: Zero-Energy Bound State and Impurity Effects

2000-04-30

arxiv.org/abs/cond-mat/0005010v2

Phys. Rev. B, v. 62, p. 6665 (2000)

Physics

Condensed Matter

Superconductivity

12 pages, 1 figure, slightly modified version, as it is published in Phys. Rev. B

Scientific paper

10.1103/PhysRevB.62.6665

We report a theoretical study on the deviations of the Meissner penetration depth $\lambda(T)$ from its London value in d-wave superconductors at low temperatures. The difference arises from low-energy surface Andreev bound states. The temperature dependent penetration depth is shown to go through a minimum at the temperature $T_{m0}\sim \sqrt{\xi_0/\lambda_0}T_c$ if the broadening of the bound states is small. The minimum will straighten out when the broadening reaches $T_{m0}$. The impurity scattering sets up the low-temperature anomalies of the penetration depth and destroys them when the mean free path is not sufficiently large. A phase transition to a state with spontaneous surface supercurrent is investigated and its critical temperature determined in the absence of a subdominant channel activated at low temperatures near the surface. Nonlinear corrections from Andreev low-energy bound states to the penetration length are obtained and shown, on account of their broadening, to be small in the Meissner state of strong type II superconductors.

Affiliated with

Also associated with

No associations

Rating

Low-Temperature Magnetic Penetration Depth in d-Wave Superconductors: Zero-Energy Bound State and Impurity Effects does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Low-Temperature Magnetic Penetration Depth in d-Wave Superconductors: Zero-Energy Bound State and Impurity Effects, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low-Temperature Magnetic Penetration Depth in d-Wave Superconductors: Zero-Energy Bound State and Impurity Effects will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-10299