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Eigenfunction fractality and pseudogap state near superconductor-insulator transition
- Publication Year :
- 2006
-
Abstract
- We develop a theory of a pseudogap state appearing near the superconductor-insulator (SI) transition in strongly disordered metals with an attractive interaction. We show that such an interaction combined with the fractal nature of the single-particle wave functions near the mobility edge leads to an anomalously large single-particle gap in the superconducting state near SI transition that persists and even increases in the insulating state long after the superconductivity is destroyed. We give analytic expressions for the value of the pseudogap in terms of the inverse participation ratio of the corresponding localization problem.
- Subjects :
- Superconductivity
Physics
Condensed matter physics
Condensed Matter - Mesoscale and Nanoscale Physics
Condensed Matter - Superconductivity
General Physics and Astronomy
Inverse
FOS: Physical sciences
02 engineering and technology
State (functional analysis)
Eigenfunction
021001 nanoscience & nanotechnology
01 natural sciences
Superconductivity (cond-mat.supr-con)
Fractal nature
Superconductor Insulator Transition
Quantum mechanics
Condensed Matter::Superconductivity
0103 physical sciences
Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
Condensed Matter::Strongly Correlated Electrons
010306 general physics
0210 nano-technology
Wave function
Pseudogap
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....e894fe4020094ea9183c21bda2408a1c