Direct relation between the low-energy spin excitations and superconductivity of overdoped high-Tc superconductors

DOI	Trouver le DOI : https://doi.org/10.1103/PhysRevLett.92.217004
Auteur	Rechercher : Wakimoto, S.; Rechercher : Zhang, H.; Rechercher : Yamada, K.; Rechercher : Swainson, I.¹; Rechercher : Kim, Hyunkyung; Rechercher : Birgeneau, R.J.
Affiliation	Conseil national de recherches Canada. Centre canadien de faisceaux de neutrons du CNRC
Format	Texte, Article
Résumé	The dynamic spin susceptibility, chi(")(omega), has been measured over the energy range of 2</=omega</=10 meV for overdoped La2-xSrxCuO4. Incommensurate (IC) spin excitations are observed at 8 K for all superconducting samples for 0.25</=x</=0.28 with chi(") peaking at approximately 6 meV. The IC peaks at 6 meV become smaller in intensity with increasing x and, finally, become unobservable for a sample with x=0.30 which has no bulk superconductivity. The maximum chi(") decreases linearly with T(c)(onset) in the overdoped region, implying a direct cooperative relation between the spin fluctuations and the superconductivity.
Date de publication	2004-05-28
Dans	Physical Review Letters 92, nº 21 (28 mai 2004) : 217004–.
Langue	anglais
Numéro NPARC	12328971
Exporter la notice	Exporter en format RIS
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Identificateur de l’enregistrement	8fcb3924-484d-4be9-b2e6-6f6f3496acfa
Enregistrement créé	2009-09-10
Enregistrement modifié	2020-04-17

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