论文标题
带有狄拉克电子的准二维系统中的量子临界超导相变
A quantum critical superconducting phase transition in quasi-two-dimensional systems with Dirac electrons
论文作者
论文摘要
我们提出了一个理论，描述了由n个平面堆栈组成的准二维系统中狄拉克电子的超导（SC）相互作用。在T = 0和T 5 0时研究了SC相的发生。在T = 0时，我们发现连接正常和SC相的量子相变。我们的理论定性地再现了在高-TC酸盐的失败状态下发生的SC相变。这一事实指出了狄拉克电子在高-TC超导性机理中的可能相关性。
We present a theory describing the superconducting (SC) interaction of Dirac electrons in a quasi-two-dimensional system consisting of a stack of N planes. The occurrence of a SC phase is investigated both at T = 0 and T 5 0. At T = 0, we find a quantum phase transition connecting the normal and SC phases. Our theory qualitatively reproduces the SC phase transition occurring in the underdoped regime of the high-Tc cuprates. This fact points to the possible relevance of Dirac electrons in the mechanism of high-Tc superconductivity.
