ISSN:
1572-9605
Keywords:
Ultrasonic
;
YBCO
;
polaronic condensation
Source:
Springer Online Journal Archives 1860-2000
Topics:
Electrical Engineering, Measurement and Control Technology
,
Physics
Notes:
Abstract We investigated elastic anomalies of sintered YBa2Cu3O7−x (x=0.35) superconductor around the critical temperature (Tc=60 K). We observed the non-symmetric and large attenuation peak (2 dB/cm at 9.7 MHz) at Tc, which was due to the lattice softening caused by the strong correlation between carriers and local lattice distortion. The rapid decrease of ultrasonic attenuation just below Tc suggested a condensation mechanism. These supported the polaronic condensation in high-Tc superconductivity.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00727459
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