Special Issue "Proceedings of the conference SuperFluctuations 2017"
A special issue of Condensed Matter (ISSN 2410-3896).
Deadline for manuscript submissions: closed (31 January 2018)
Prof. Andrea Perali
Università di Camerino, Scuola del Farmaco e Divisione di Fisica, Edificio di Fisica, Via Madonna delle Carceri, 9 - 62032 – Camerino (MC), Italy
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Interests: high-Tc superconductivity (theory and phenomenology), multiband superconductivity, quantum size effects and shape resonances in superconductors, nanoscale superconductors, superconducting heterostructures, BCS-BEC crossover, pseudogap, superconducting fluctuations, ultracold fermions: superfluidity and BCS-BEC crossover, electron–hole superfluidity
This Special Issue is dedicated to SuperFluctuations 2017, which will be held in San Benedetto del Tronto, Italy, 6–8 September 2017 (http://www.multisuper.org/superfluctuations-2017).
Among the main topics of the Conference is the study of fluctuations and BCS-BEC crossover phenomena in low dimensional systems. Very recently, the BCS-BEC crossover has been realized in quasi two-dimensional (2D) ultracold gases made of alkali-metal atoms. Contrary to the 3D case, mean-field theories are completely unreliable for the study of strongly-interacting superfluid fermions in two dimensions because of the huge increase of quantum fluctuations. The 2D BCS-BEC crossover is also interesting for high-TC superconductivity where the phase diagram of cuprate superconductors can be interpreted in terms of a BCS-BEC crossover as doping is varied. The critical temperature TC has a wide fluctuation region with pseudo-gap effects not yet fully understood.
Another hot topic of the Conference is multiband and multigap superconductors, which have demonstrated the potential for realizing novel coherent quantum phenomena and to control system parameters to enhance the superconducting critical temperature and the pairing energy gaps. Nanostructuring of bulk superconductors in the form of nanofilms, nanostripes, and nanoclusters, or introducing controlled non homogeneities has shown to be able to induce multi-gap and multiband superconductivity and superconducting shape resonances. Very recently, it has been suggested that iron-based superconductors have composite superconductivity, consisting of strong-coupling BEC in the electron band and weak-coupling BCS-like superconductivity in the hole band. Indeed, the intermediate crossover regime between BCS and BEC superconductivity is now considered as one of the most promising regimes in the search for high-TC superconductivity.
- -Fluctuations and BCS-BEC crossover phenomena in low dimensional systems;
- -Hybrid systems, superconductivity at the interfaces, and coexistence of phases;
- -Highly nonlinear phenomena: Josephson and Andreev effects, topological defects, skyrmions and solitons, vortex states;
- -Novel phenomena in multicomponent/multigap superconductors and superfluids.
Prof. Dr. Andrea Perali
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