A very large oxygen-isotope shift of the charge-stripe ordering temperature in the high-temperature superconductors La2-xSrxCuO4 has been observed using x-ray absorption spectroscopy, a fast (similar to 10(-15) seconds) and local probe (similar to 5 Angstrom). Upon replacing O-16 with O-18, the charge-stripe ordering temperature in La1.94Sr0.06CuO4 increases from about 110 K to 180 K. The present results provide compelling evidence for a strong electron-phonon interaction in this compound, and thus place important constraints on the microscopic origin of the stripe formation.
Oxygen-isotope shift of the charge-stripe ordering temperature in La2-xSrxCuO4 from x-ray absorption spectroscopy / A., Lanzara; Zhao, G. M.; Saini, Naurang Lal; Bianconi, Antonio; Conder, K.; Keller, H.; Müller, K. A.. - In: JOURNAL OF PHYSICS. CONDENSED MATTER. - ISSN 0953-8984. - STAMPA. - 11:(1999), pp. 541-546. [10.1088/0953-8984/11/48/103]
Oxygen-isotope shift of the charge-stripe ordering temperature in La2-xSrxCuO4 from x-ray absorption spectroscopy
SAINI, Naurang Lal;BIANCONI, Antonio;
1999
Abstract
A very large oxygen-isotope shift of the charge-stripe ordering temperature in the high-temperature superconductors La2-xSrxCuO4 has been observed using x-ray absorption spectroscopy, a fast (similar to 10(-15) seconds) and local probe (similar to 5 Angstrom). Upon replacing O-16 with O-18, the charge-stripe ordering temperature in La1.94Sr0.06CuO4 increases from about 110 K to 180 K. The present results provide compelling evidence for a strong electron-phonon interaction in this compound, and thus place important constraints on the microscopic origin of the stripe formation.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
