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

Yu. S. Barash, M. S. Kalenkov, J. Kurkijarvi

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…