论文标题
超导体 - 在非Fermi液体中的绝缘体过渡
Superconductor--Insulator Transition in a non-Fermi Liquid
论文作者
论文摘要
我们提出了一个与非Fermi液体高温相的强相关系统的模型。它的基态将绝缘子传给超导体量子相变（QPT），这是配对相互作用强度的函数。绝缘体和超导体均来自相同的相互作用机制。绝缘阶段的电阻率具有激活能的激活行为，在QPT处为零。这导致了具有代数温度依赖性的广泛量子临界状态。在超导阶段提高温度后，该模型表现出有限的温度相过渡到玻色金属相，该阶段将超导体与非Fermi液体金属分开。
We present a model of a strongly correlated system with a non-Fermi liquid high temperature phase. Its ground state undergoes an insulator to superconductor quantum phase transition (QPT) as a function of a pairing interaction strength. Both the insulator and the superconductor are originating from the same interaction mechanism. The resistivity in the insulating phase exhibits the activation behavior with the activation energy, which goes to zero at the QPT. This leads to a wide quantum critical regime with an algebraic temperature dependence of the resistivity. Upon raising the temperature in the superconducting phase, the model exhibits a finite temperature phase transition to a Bose metal phase, which separates the superconductor from the non-Fermi liquid metal.
