TY - JOUR
T1 - Ultrasonic measurements on polycrystalline YBa2Cu3O7
AU - Sun, Keun J.
AU - Levy, Moises
AU - Sarma, Bimal K.
AU - Hor, P. H.
AU - Meng, R. L.
AU - Wang, Y. Q.
AU - Chu, C. W.
N1 - Funding Information:
2 Research supported by Air Force Office Scientific Research
Funding Information:
under Grant No. AFOSR 84-0350. Research supported by the National Science Foundation under Grant No DMR 8204174. Also at the Division of Materials Research, NSF, Washington, DC 20550, USA.
PY - 1988/9/12
Y1 - 1988/9/12
N2 - Temperature dependent ultrasonic attenuation data of polycrystalline YBa2Cu3O7 at 10 MHz show a plateau between 220 and 250 K, and slope changes at 263, 135 and 97 K. The attenuation does not display a sharp decrease at Tc as would be described in the BCS theory. Around 255 K, the sound velocity in the sample increases from its room temperature value by more than 10%.
AB - Temperature dependent ultrasonic attenuation data of polycrystalline YBa2Cu3O7 at 10 MHz show a plateau between 220 and 250 K, and slope changes at 263, 135 and 97 K. The attenuation does not display a sharp decrease at Tc as would be described in the BCS theory. Around 255 K, the sound velocity in the sample increases from its room temperature value by more than 10%.
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U2 - 10.1016/0375-9601(88)90686-X
DO - 10.1016/0375-9601(88)90686-X
M3 - Article
AN - SCOPUS:2842597525
VL - 131
SP - 541
EP - 544
JO - Physics Letters, Section A: General, Atomic and Solid State Physics
JF - Physics Letters, Section A: General, Atomic and Solid State Physics
SN - 0375-9601
IS - 9
ER -