On the possibility of superconductivity in PrBa2Cu3O7
I.I. Mazin
TL;DR
This paper investigates the potential for intrinsic superconductivity in PrBa2Cu3O7, addressing theoretical compatibility, nature of carriers, and mechanisms, based on recent experimental observations and theoretical considerations.
Contribution
The paper provides an analysis of the possibility of superconductivity in PrBa2Cu3O7, focusing on theoretical compatibility and the nature of superconducting carriers.
Findings
Superconductivity in PrBa2Cu3O7 may be compatible with certain theories.
Superconducting carriers could be different from those in other cuprates.
The underlying mechanism of superconductivity in PrBa2Cu3O7 remains uncertain.
Abstract
Recent reports about observations of superconductivity in PrBa2Cu3O7 raise a number of questions: (i) of various theories striving to explain the Tc suppression in PrxY{1-x}Ba2Cu3O7, are there any compatible with possible superconductivity in stoichiometric PrBa2Cu3O7? (ii) if this superconductivity is not an experimental artifact, are the superconducting carriers (holes) of the same character as in the other high-Tc cuprates, or do they represent another electronic subsystem? (iii) is the underlying mechanism the same as in other high-Tc superconductors? I present an answer to the first two questions, while leaving the last one open.
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