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.

La(O,F)BiS ₂的高压相在所有基于BiS ₂的超导体中表现出最高的转变温度。已经进行了各种研究，例如同位素效应的调查，以解释其超导机制。然而，关于高压下单晶La(O,F)BiS ₂的电传输特性和振动模式的报道很少。在这项研究中，我们开发了一种带有双探针金刚石电极的金刚石砧座电池，用于测量 La(O,F)BiS ₂的电传输特性单晶和铅作为低温下的压力计。使用开发的系统，在对 La(O,F)BiS ₂单晶施加压力的情况下，观察到转变温度和声子硬化的线性下降。