掺硼金刚石对顶砧高压合成Sn $_{3}$ S $_{4}$超导体
High-pressure synthesis of superconducting Sn$_{3}$S$_{4}$ using diamond anvil cell with boron-doped diamond heater
摘要：
高压技术在广泛的研究领域开辟了功能材料的探索。在已建立的金刚石对顶砧室中，用掺硼金刚石加热器和输运测量终端进行了立方Sn $_{3}$ S $_{4}$超导体的高压合成。X射线衍射和拉曼光谱表明，在减压过程中，Sn $_{3}$ S $_{4}$相在P>5 GPa的压力范围内是稳定的。在金刚石压砧单元中的传输测量终端检测合成的Sn $_{3}$ S $_{4}$中的金属性质和超导性，在5.6 GPa下具有13.3 K的最大起始转变温度。所观察到的压力-T $_{c}$关系与从第一性原理计算得到的关系是一致的。在Sn $_{3}$ S $_{4}$中观察到的超导电性开启了在高温高压条件下的进一步材料探索。
英文摘要：
High-pressure techniques open exploration of functional materials in broad research fields. An established diamond anvil cell with a boron-doped diamond heater and transport measurement terminals has performed the high-pressure synthesis of a cubic Sn$_{3}$S$_{4}$ superconductor. X-ray diffraction and Raman spectroscopy reveal that the Sn$_{3}$S$_{4}$ phase is stable in the pressure range of P>5 GPa in a decompression process. Transport measurement terminals in the diamond anvil cell detect a metallic nature and superconductivity in the synthesized Sn$_{3}$S$_{4}$ with a maximum onset transition temperature of 13.3 K at 5.6 GPa. The observed pressure-T$_{c}$ relationship is consistent with that from the first-principles calculation. The observation of superconductivity in Sn$_{3}$S$_{4}$ opens further materials exploration under high temperature and pressure conditions.
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