空穴掺杂铜铁矿CuAlO_2、AgAlO_2和AuAlO_2中超导Transition Temperature的化学走向
Chemical Trend of Superconducting Transition Temperature in Hole-doped Delafossite of CuAlO_2, AgAlO_2 and AuAlO_2
摘要：
我们对空穴掺杂铜铁矿CuAlO_2、AgAlO_2和AuAlO_2的超导转变温度T_c进行了第一性原理计算。在最佳空穴掺杂浓度下，CuAlO_2、AgAlO_2和AuAlO_2的T_c分别为50 K、40 K和3 K。AuAlO_2的低T_c归因于低共价性和重原子质量导致的弱电子-声子相互作用。
英文摘要：
We have performed the first-principles calculations about the superconducting transition temperature T_c of hole-doped delafossite CuAlO_2, AgAlO_2 and AuAlO_2. Calculated T_c are about 50 K(CuAlO_2), 40 K(AgAlO_2) and 3 K(AuAlO_2) at maximum in the optimum hole-doping concentration. The low T_c of AuAlO_2 is attributed to the weak electron-phonon interaction caused by the low covalency and heavy atomic mass.
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