Nematic order driven by superconducting correlations
arXiv:2101.03174 · doi:10.1016/j.aop.2021.168494
Abstract
The interplay of nematicity and superconductivity has been observed in a wide variety of quantum materials. To explore this interplay, we consider a two-dimensional (2D) array of nematogens, local droplets with nematicity, coupled to a network of Josephson junction wires. Using finite temperature classical Monte Carlo simulations, we elucidate the phase diagram of this model and show that the development of superconducting correlations and the directional delocalization of Cooper pairs can promote nematogen ordering, resulting in long-range nematic order. We obtain the transport properties of our model within an effective resistor network picture. We discuss these ideas in the context of the 2D electron gas at the (111) KTaO interface and the doped topological insulators NbBiSe and CuBiSe. Our work makes contact with Phil Anderson's numerous contributions to broken symmetries driven by the saving of kinetic energy, including double exchange ferromagnetism and the interlayer tunneling theory of high superconductivity.
arXiv comment8 pages, 6 figs, submitted to a special issue of Annals of Physics in honor of P. W. Anderson
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