论文标题
半手半符号的手性表面超导性
Chiral surface superconductivity in half-Heusler semimetals
论文作者
论文摘要
我们提出了半身半学的金属和弱分散表面状态，这是在散装过渡之前发作的非常规表面超导性的可能结构域。使用密度函数理论（DFT）计算和随机相位近似（RPA），我们分析了Luptbi的表面条带结构及其在存在强旋转型偶联的情况下，由筛选的电子电子相互作用引起的库珀对形成的倾向。在广泛的模型参数上，我们发现具有Majorana边缘模式的能量偏爱的手性超导式冷凝物，而低维阶参数的波动触发了时间转换对称性破裂，以在超导过渡之前进行。
We propose the metallic and weakly dispersive surface states of half-Heusler semimetals as a possible domain for the onset of unconventional surface superconductivity ahead of the bulk transition. Using density functional theory (DFT) calculations and the random phase approximation (RPA), we analyse the surface band structure of LuPtBi and its propensity towards Cooper pair formation induced by screened electron-electron interactions in the presence of strong spin-orbit coupling. Over a wide range of model parameters, we find an energetically favoured chiral superconducting condensate featuring Majorana edge modes, while low-dimensional order parameter fluctuations trigger time-reversal symmetry breaking to precede the superconducting transition.
