Interlayer coupling and superconducting critical temperature of Bi2Sr1.5La0.5CuO6+delta and Bi2Sr2CaCu2O8+delta: Incommensurate effects of pressure

Authors
Yurgens, A Winkler, D Claeson, T Murayama, T Ando, Y
Citation
A. Yurgens et al., Interlayer coupling and superconducting critical temperature of Bi2Sr1.5La0.5CuO6+delta and Bi2Sr2CaCu2O8+delta: Incommensurate effects of pressure, PHYS REV L, 82(15), 1999, pp. 3148-3151
Citations number
20
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
82
Issue
15
Year of publication
1999
Pages
3148 - 3151
Database
ISI
SICI code
0031-9007(19990412)82:15<3148:ICASCT>2.0.ZU;2-S
Abstract
The c-axis interlayer coupling of Bi2Sr1.5La0.5CuO6+delta and Bi2Sr2CaCu2O8 +delta single crystals was changed by means of hydrostatic pressure P < 1 G Pa resulting in a drastic increase of the c-axis critical current I-c (up t o 270% GPa(-1)) and decrease of the normal state resistance R-n (down to -6 0% GPa(-1)). The superconducting critical temperature only slightly increas es with a rate of approximate to 2%-6% GPa(-1). The much stronger effect of pressure on I-c and R-n in Bi2Sr1.5La0.5CuO6+delta implies that the CuO-in terlayer coupling has little effect on T-c in this compound.