caa a22 4500 445380276 CHVBK 20180317143015.0 cr unu---uuuuu 170323e20110401xx s 000 0 eng 10.1007/s10948-010-1096-y doi (NATIONALLICENCE)springer-10.1007/s10948-010-1096-y Shape Resonance at a Lifshitz Transition for High Temperature Superconductivity in Multiband Superconductors [Elektronische Daten] [Davide Innocenti, Antonio Valletta, Antonio Bianconi] We discuss the shape resonance in the superconducting gaps of a two-band superconductor by tuning the chemical potential at a Lifshitz transition for Fermi surface neck collapsing and for spot appearing. The high temperature superconducting scenario for complex matter shows the coexistence of a first BCS condensate made of Cooper pairs in the first band and a second boson-like condensate made of bosons like bipolarons, in the second band where the chemical potential is tuned near a Lifshitz transition. The interband coupling controls the shape resonance in the pair exchange between the two condensates. We discuss the particular BCS-Bose crossover that occurs at the shape resonance tuning the Lifshitz parameter (the energy difference between the chemical potential and the Lifshitz topological transition) like tuning the external magnetic field for the Feshbach resonances in ultracold gases. This superconducting phase provides a particular case of topological superconductivity with multiple condensates of different winding numbers. Springer Science+Business Media, LLC, 2010 Multiband superconductivity nationallicence Bose-BCS crossover nationallicence Lifshitz transition nationallicence Shape resonance nationallicence Bipolarons nationallicence Innocenti Davide Advanced Light Source, Lawrence Berkeley National Laboratory, One Cyclotron Road, 94720, Berkeley, CA, USA aut Valletta Antonio Institute for Microelectronics and Microsystems, IMM CNR, Via del Fosso del Cavaliere 100, 00133, Roma, Italy aut Bianconi Antonio Physics Department, Sapienza University of Rome, P. le Aldo Moro 2, 00185, Roma, Italy aut Journal of Superconductivity and Novel Magnetism Springer US; http://www.springer-ny.com 24/3(2011-04-01), 1137-1143 1557-1939 24:3<1137 2011 24 10948 https://doi.org/10.1007/s10948-010-1096-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10948-010-1096-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Innocenti Davide Advanced Light Source, Lawrence Berkeley National Laboratory, One Cyclotron Road, 94720, Berkeley, CA, USA aut NATIONALLICENCE 700 1- Valletta Antonio Institute for Microelectronics and Microsystems, IMM CNR, Via del Fosso del Cavaliere 100, 00133, Roma, Italy aut NATIONALLICENCE 700 1- Bianconi Antonio Physics Department, Sapienza University of Rome, P. le Aldo Moro 2, 00185, Roma, Italy aut NATIONALLICENCE 773 0- Journal of Superconductivity and Novel Magnetism Springer US; http://www.springer-ny.com 24/3(2011-04-01), 1137-1143 1557-1939 24:3<1137 2011 24 10948 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer