Zadik, Ruth H, Takabayashi, Yasuhiro, Klupp, Gyoengyi, Colman, Ross H, Ganin, Alexey Y, Potocnik, Anton, Jeglic, Peter, Arcon, Denis, Matus, Peter, Kamaras, Katalin et al (show 8 more authors)
(2015)
Optimized unconventional superconductivity in a molecular Jahn-Teller metal.
SCIENCE ADVANCES, 1 (3).
e1500059-.
Text
Optimized unconventional superconductivity in a molecular Jahn-Teller metal.pdf - Published version Download (1MB) |
Abstract
Understanding the relationship between the superconducting, the neighboring insulating, and the normal metallic state above T c is a major challenge for all unconventional superconductors. The molecular A3C60 fulleride superconductors have a parent antiferromagnetic insulator in common with the atom-based cuprates, but here, the C60 (3-) electronic structure controls the geometry and spin state of the structural building unit via the on-molecule Jahn-Teller effect. We identify the Jahn-Teller metal as a fluctuating microscopically heterogeneous coexistence of both localized Jahn-Teller-active and itinerant electrons that connects the insulating and superconducting states of fullerides. The balance between these molecular and extended lattice features of the electrons at the Fermi level gives a dome-shaped variation of T c with interfulleride separation, demonstrating molecular electronic structure control of superconductivity.
Item Type: | Article |
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Uncontrolled Keywords: | Jahn-Teller effect, Metal-insulator transitions, Strong correlations, superconductivity |
Depositing User: | Symplectic Admin |
Date Deposited: | 01 Aug 2016 15:50 |
Last Modified: | 19 Jan 2023 07:32 |
DOI: | 10.1126/sciadv.1500059 |
Related URLs: | |
URI: | https://livrepository.liverpool.ac.uk/id/eprint/3002638 |