Open AccessNonadiabatic coupling of the dynamical structure to the superconductivity in YSr 2 Cu 2.75 Mo 0.25 O 7.54 and Sr 2 CuO 3.3
Author(s) -
Steven D. Conradson,
T. H. Geballe,
Changqing Jin,
Lipeng Cao,
A. Gauzzi,
Maarit Karppinen,
Gianguido Baldinozzi,
Wenmin Li,
E. Gilioli,
Jack Mingde Jiang,
Matthew J. Latimer,
Oliver Mueller,
V. F. Nasretdinova
Publication year - 2020
Publication title -
proceedings of the national academy of sciences of the united states of america
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.011
H-Index - 771
eISSN - 1091-6490
pISSN - 0027-8424
DOI - 10.1073/pnas.2018336117
Subject(s) - superconductivity , cuprate , condensed matter physics , polaron , electronic structure , fermi surface , quantum tunnelling , physics , electron , pairing , momentum (technical analysis) , atom (system on chip) , quantum mechanics , finance , computer science , economics , embedded system
Significance The Cu extended X-ray absorption fine structure of YSr2 Cu2.75 Mo0.25 O7.54 (with superconducting critical temperature, Tc , = 84 K) and Sr2 CuO3.3 (Tc = 95 K) through their superconducting transitions demonstrates that the common factor in superconductivity in cuprates, including those prepared by high-pressure oxygenation, is an internal quantum tunneling polaron in its dynamical structure. In addition, Sr2 CuO3.3 is the first material to show a concomitant transformation in this structure involving atom displacements >1 Å that would be expected to modify its Fermi surface, which would complicate the transition beyond a purely electronic one consisting of the pairing of electrons of opposite momentum across fixed electronic states.