Anomalous acoustoelectric effect induced by clapping modes in chiral superconductors

Anomalous acoustoelectric effect induced by clapping modes in chiral superconductors
复制标题

手性超导体拍手模式引起的反常声电效应

DOI:
10.1103/physrevb.105.134520
复制
发表时间:
2022
期刊:
影响因子:
3.7
通讯作者:
Fujimoto Satoshi
Fujimoto Satoshi
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Matsushita Taiki;Mizushima Takeshi;Vekhter Ilya;Fujimoto Satoshi

文献摘要

参考文献

相似文献

拍手模是库珀对中两个手征分量之间的相对振幅和相位模,是手征超导体固有的玻色子集体模。这些模式表现为长寿命的玻色子,其质量小于衰变为非束缚费米子对的阈值能量。在这里,我们澄清,真实的/虚拍模式的手征超导体直接耦合到声波传播时,弱粒子-空穴不对称的正常状态准粒子色散考虑。由声波驱动的拍击模式产生交变电流,即超导体中的声电效应。值得注意的是,拍手模式引起横向电流。当声速与费米速度相当时,如在重费米子化合物中,横向电流在低于连续激发阈值的能量下共振增强。这种共振提供了手征超导性的确凿证据。
Clapping modes, which are relative amplitude and phase modes between two chiral components of Cooper pairs, are bosonic collective modes inherent to chiral superconductors. These modes behave as long-lived bosons with masses smaller than the threshold energy,, for decay into unbound fermion pairs. Here, we clarify that the real/imaginary clapping modes in chiral superconductors directly couple to acoustic wave propagation when the weak particle-hole asymmetry of the normal state quasiparticle dispersion is taken into account. The clapping modes driven by an acoustic wave generate an alternating electric current, that is, the acoustoelectric effect in superconductors. Significantly, the clapping modes give rise to a transverse electric current. When the sound velocity is comparable to the Fermi velocity, as in heavy fermion compounds, the transverse current is resonantly enhanced at energy below the threshold for continuum excitations. This resonance provides smoking-gun evidence of chiral superconductivity.
DOI: 10.1088/0953-2048/29/8/085006
发表时间: 2016
影响因子: 3.6
作者:
S. Yip
通讯作者: S. Yip
超流体 3He 的准经典方法
DOI: 10.1016/0370-1573(83)90051-0
发表时间: 1983
期刊: Physics Reports
影响因子: --
作者:
J. Serene;D. Rainer
通讯作者: D. Rainer
DOI: --
发表时间: 2011
期刊:
影响因子: --
作者:
Sumimoto H;Minakami R;Miyano K
通讯作者: Miyano K
DOI: 10.1209/0295-5075/3/6/017
发表时间: 1987
期刊: EPL
影响因子: 1.8
作者:
U. Rauchschwalbe;C. Bredl;F. Steglich;K. Maki;P. Fulde
通讯作者: P. Fulde