Superconductivity and quantum spin disorder in cuprates

Authors
Havilio, M Auerbach, A
Citation
M. Havilio et A. Auerbach, Superconductivity and quantum spin disorder in cuprates, PHYS REV L, 83(23), 1999, pp. 4848-4851
Citations number
28
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
83
Issue
23
Year of publication
1999
Pages
4848 - 4851
Database
ISI
SICI code
0031-9007(199912)83:23<4848:SAQSDI>2.0.ZU;2-9
Abstract
A fundamental connection between superconductivity and quantum spin fluctua tions in underdoped cuprates is revealed. A variational calculation shows t hat Cooper pair hopping strongly reduces the local magnetization m(0). This effect pertains to recent neutron scattering and muon spin rotation measur ements in which m(0) varies weakly with hole doping in the poorly conductin g regime, but drops precipitously above the onset of superconductivity.