High-pressure effects on La(O,F)BiS2 single crystal using diamond anvil cell with dual-probe diamond electrodes
High-pressure effects on La(O,F)BiS2 single crystal using diamond anvil cell with dual-probe diamond electrodes
复制标题
DOI：
10.35848/1882-0786/abec91
复制
发表时间：
2021-03
影响因子：
2.3
通讯作者：
Sayaka Yamamoto;R. Matsumoto;S. Adachi;Y. Takano
中科院分区：
文献类型：
--
作者：
Sayaka Yamamoto;R. Matsumoto;S. Adachi;Y. Takano
La(O，F)BiS2的高压相在所有BiS2基超导体中表现出最高的转变温度。各种各样的研究，如同位素效应的研究，已经被用来解释它的超导机制。然而，关于La(O，F)BiS2单晶在高压下的电输运性质和振动模式的报道很少。在这项研究中，我们开发了一种具有双探针金刚石电极的金刚石砧电池，用于测量La(O，F)BiS2单晶和Pb在低温下的电输运性质。利用所开发的体系，在压力作用下，La(O，F)BiS2单晶的转变温度和声子硬化率呈线性下降。
The high-pressure phase of La(O,F)BiS2 exhibits the highest transition temperature among all the BiS2-based superconductors. Various studies, such as the investigation of isotope effects, have been conducted to explain its superconducting mechanism. However, there are very few reports on the electrical transport properties and vibration modes of single-crystalline La(O,F)BiS2 under high pressure. In this study, we developed a diamond anvil cell with dual-probe diamond electrodes to measure the electrical transport properties of La(O,F)BiS2 single crystal and Pb as a manometer at low temperature. Using the developed system, a linear decrease in the transition temperature and phonon hardening was observed under the application of pressure on La(O,F)BiS2 single crystal.