Superconductivity and charge redistribution under high pressure in the underdoped La1.916Sr0.084CuO4

Citation
T. Honma et al., Superconductivity and charge redistribution under high pressure in the underdoped La1.916Sr0.084CuO4, PHYSICA C, 341, 2000, pp. 1933-1934
Citations number
3
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA C
ISSN journal
09214534 → ACNP
Volume
341
Year of publication
2000
Part
3
Pages
1933 - 1934
Database
ISI
SICI code
0921-4534(200011)341:<1933:SACRUH>2.0.ZU;2-T
Abstract
Unusual pressure-induced broadening of superconducting transition was obser ved in La1.916Sr0.084CuO4 without excess oxygen by ac resistance measuremen t (acR) and mutual inductance measurement (acM). Above similar to 9kbar, a negative dT(c)/dP determined by acM and a positive dT(c)/dP determined by a cR are observed, while below similar to 9 kbar, both dT(c)/dP are positive in sign and identical in magnitude. This suggests the occurrence of the int ralayer charge redistribution induced by pressure.