de Haas-van Alphen effect in the superconducting state of YNi2B2C
de Haas-van Alphen effect in the superconducting state of YNi2B2C
复制标题
YNi2B2C超导态的德哈斯-范阿尔芬效应
DOI：
10.1007/bf01324519
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发表时间：
1995
期刊：
影响因子：
--
通讯作者：
K. Winzer
中科院分区：
文献类型：
--
作者：
M. Heinecke;K. Winzer
为了检查最近发现的四元化合物 RENi2B2C 的费米面，我们在高达 12 T 的磁场中对 YNi2B2C 单晶进行了德哈斯-范阿尔芬 (dHvA) 效应的测量。对于 B‖c，我们观察到两个 dHvA 频率 F1=0.499 kT 和 F2=6.933 kT，分别对应于布里渊区横截面的大约 1.5% 和 21%区。这两个频率都可以在 II 型超导体的涡旋状态深处观察到，较低的 dHvA 频率低至 2 T，相当于上临界场 Bc2 的大约 1/5，在电阻率测量中发现上临界场 Bc2 为 10.6 T。超导态下的场相关准粒子阻尼非常弱，因为 dHvA 振荡的幅度似乎不受 Bc2 相变的影响。
To examine the Fermi surfaces of the recently discovered quaternery compounds RENi2B2C measurements of the de Haas-van Alphen (dHvA) effect were made on YNi2B2C single crystals in magnetic fields up to 12 T. ForB‖cwe observe two dHvA frequenciesF1=0.499 kT andF2=6.933 kT which corresponds to approximately 1,5% and 21% of the Brillouin zone cross section area. Both frequencies could be observed deep in the vortex state of the type-II superconductor, the lower dHvA frequency down to 2 T corresponding to roughly 1/5 of the upper critical fieldBc2which was found to be 10.6 T in resistivity measurements. The field dependent quasiparticle damping in the superconducting state is very weak, since the amplitude of the dHvA oscillations seems to be unaffected by the phase transition atBc2.
影响因子：
64.8
作者：
CAVA, RJ;TAKAGI, H;UCHIDA, S
通讯作者：
UCHIDA, S