Theories of Low-Energy Quasi-Particle States in Disordered d-Wave Superconductors

Details Theories of Low-Energy Quasi-Particle States in Disordered d-Wave Superconductors Theories of Low-Energy Quasi-Particle States in Disordered d-Wave Superconductors

2000-06-23

arxiv.org/abs/cond-mat/0006362v2

Physics Reports 359 (2002) 283-354

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

42 Pages, 8 postscript figures, published version with updated references

Scientific paper

10.1016/S0370-1573(01)00065-5

The physics of low-energy quasi-particle excitations in disordered d-wave superconductors is a subject of ongoing intensive research. Over the last decade, a variety of conceptually and methodologically different approaches to the problem have been developed. Unfortunately, many of these theories contradict each other, and the current literature displays a lack of consensus on even the most basic physical observables. Adopting a symmetry-oriented approach, the present paper attempts to identify the origin of the disagreement between various previous approaches, and to develop a coherent theoretical description of the different low-energy regimes realized in weakly disordered d-wave superconductors. We show that, depending on the presence or absence of time-reversal invariance and the microscopic nature of the impurities, the system falls into one of four different symmetry classes. By employing a field-theoretical formalism, we derive effective descriptions of these universal regimes as descendants of a common parent field theory of Wess-Zumino-Novikov-Witten type. As well as describing the properties of each universal regime, we analyse a number of physically relevant crossover scenarios, and discuss reasons for the disagreement between previous results. We also touch upon other aspects of the phenomenology of the d-wave superconductor such as quasi-particle localization properties, the spin quantum Hall effect, and the quasi-particle physics of the disordered vortex lattice.

Affiliated with

Also associated with

No associations

Rating

Theories of Low-Energy Quasi-Particle States in Disordered d-Wave Superconductors 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 Theories of Low-Energy Quasi-Particle States in Disordered d-Wave Superconductors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Theories of Low-Energy Quasi-Particle States in Disordered d-Wave Superconductors will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-95747