Reflectivity and microwave absorption in crystals with alternating intrinsic Josephson junctions.

Reflectivity and microwave absorption in crystals with alternating intrinsic Josephson junctions.
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具有交替本征约瑟夫森结的晶体的反射率和微波吸收。

DOI:
10.1103/physrevlett.89.057003
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发表时间:
2001
影响因子:
8.6
通讯作者:
M. Maley
M. Maley
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
C. Helm;L. Bulaevskii;E. Chudnovsky;M. Maley

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计算了在电场沿c轴沿着极化时,具有不同临界电流密度和准粒子电导率的两个交替本征约瑟夫森结的层状超导体的反射率R(Ω)随频率和磁场的变化关系.描述层的电子压缩性和相邻结的电荷耦合的参数α提取SmLa 1-xSrxCuO(4-delta)超导体从两个独立的光学测量,在零磁场的损失函数L(ω)和L(ω)的峰值位置的磁场依赖性的拟合。实验结果与α的自由电子值一致。
We compute the frequency and magnetic field dependencies of the reflectivity R(omega) in layered superconductors with two alternating intrinsic Josephson junctions with different critical current densities and quasiparticle conductivities for the electric field polarized along the c axis. The parameter alpha describing the electronic compressibility of the layers and the charge coupling of neighboring junctions was extracted for the SmLa1-xSr xCuO (4-delta) superconductor from two independent optical measurements, the fit of the loss function L(omega) at zero magnetic field and the magnetic field dependence of the peak positions in L(omega). The experiments are consistent with a free electron value for alpha.
I.Adachi:物理学博士。
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