Ultrasonic strain effects on Bi2223 cuprate superconductors

Ultrasonic strain effects on Bi2223 cuprate superconductors
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超声应变对 Bi2223 铜酸盐超导体的影响

DOI:
10.7567/jjap.53.07kc05
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发表时间:
2014
影响因子:
1.5
通讯作者:
Sho Nobukiyo
Sho Nobukiyo
中科院分区:
物理与天体物理4区
文献类型:
--
作者:
Kunihiko Irie;M. Mito;Takuma Nagano;K. Tsuruta;Sho Nobukiyo

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众所周知,超导态对热涨落的稳定性可以通过施加静态应变来控制,例如拉伸或挤压产生的应变。我们成功地处理了一个典型的铜酸盐超导体Bi2Sr2Ca2Cu3Ox(称为Bi2223)的迈斯纳信号,其动应力频率为1 MHz,由压电器件产生。在那里观测到的超导转变温度(T_C)漂移的幅度是静态应变下的100倍以上。我们认为,声应力引起了对晶格的动态微扰,从而抑制了库珀对的形成。
It has been well known that the stability of the superconducting state against thermal fluctuation can be manipulated by applying static strain such as that produced by either stretching or squashing. We have succeeded in manipulating the Meissner signal of a typical cuprate superconductor Bi2Sr2Ca2Cu3Ox (termed Bi2223) with a dynamical stress of 1 MHz frequency, generated by a piezoelectric device. The magnitude of the superconducting transition temperature (Tc) shift observed there exceeds one hundred times as much as those under static strain. We consider that the acoustic stress induces dynamic perturbation toward the lattice, resulting in the suppression of the formation of Cooper pairing.
拉伸应变对Bi2223复合带临界电流的影响
DOI: --
发表时间: 2008
期刊: Physica C 468
影响因子: --
作者:
Y. Mukai;S. Ochiai;H. Okuda;他3名
通讯作者: 他3名
皮秒超声研究退火对Fe/Pt超晶格声学特性的影响
DOI: --
发表时间: 2009
期刊: Japanese Journal of Applied Physics 49
影响因子: --
作者:
N.Nakamura;A.Uranishi;M.Wakita;H.Ogi;M.Hirao
通讯作者: M.Hirao