Large ultrasonic attenuation at T{sub c} in YBa{sub 2}Cu{sub 3}O{sub 7-x}
Journal Article
·
· Journal of Superconductivity
- Fujitsu Laboratories Ltd., Atsugi (Japan)
- Superconducting Research Lab., Tokyo (Japan)
The authors investigated elastic anomalies of sintered YBa{sub 2}Cu{sub 3}O{sub 7{minus}x} (x=0.35) superconductor around the critical temperature (T{sub c} = 60K). They observed the non-symmetric and large attentuation peak (2 dB/cm at 9.7 MHz) at T{sub c}, 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 T{sub c} suggested a condensation mechanism. These supported the polaronic condensation in high-Tc superconductivity.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 207201
- Journal Information:
- Journal of Superconductivity, Journal Name: Journal of Superconductivity Journal Issue: 5 Vol. 8; ISSN JOUSEH; ISSN 0896-1107
- Country of Publication:
- United States
- Language:
- English
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