Orthorhombic distortion at the superconducting transition in YBa2Cu3O7: evidence for anisotropic pairing

The results of a high-resolution X-ray scattering study of the structure of YBa2Cu3O7 as a function of temeprature are reported. It is found that there is an anomaly in the orthorhombic splitting, b-a, near the superconducting transition, whereas there is little or no anomaly in the unit-cell volume...

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Veröffentlicht in:	Physical review letters 1987-12, Vol.59 (24), p.2772-2775
Hauptverfasser:	HORN, P. M, KEANE, D. T, HELD, G. A, JORDAN-SWEET, J. L, KAISER, D. L, HOLTZBERG, F, RICE, T. M
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: structure, mechanical and thermal properties Exact sciences and technology Inorganic compounds Physics Structure of solids and liquids crystallography Structure of specific crystalline solids Water, oxides, hydroxides, peroxides
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	The results of a high-resolution X-ray scattering study of the structure of YBa2Cu3O7 as a function of temeprature are reported. It is found that there is an anomaly in the orthorhombic splitting, b-a, near the superconducting transition, whereas there is little or no anomaly in the unit-cell volume. Results suggest that the superconducting wave function has a uniaxial anisotropy within the a-b plane. (Author)
ISSN:	0031-9007 1079-7114
DOI:	10.1103/PhysRevLett.59.2772