近日，中国科学院高能物理研究所的李凯及其研究团队取得一项新进展。经过不懈努力，他们对离子晶格上的全息条纹超导体进行研究。相关研究成果已于2025年2月6日在国际知名学术期刊《高能物理杂志》上发表。

该研究团队构建了一个全息模型来研究离子晶格上的条纹超导体。该模型的特征是具有包含三个不同相位的相图，即电荷密度波（CDW）相、普通超导（SC）相和条纹超导（SSC）相。研究人员详细研究了离子晶格对相图的影响。

首先，由于背景的周期性，在临界温度以下可以发现不同类型的CDW解。此外，随着晶格振幅的增加，这些解会被锁定在不同的公度态中。其次，研究人员发现CDW相的临界温度随晶格振幅的增加而降低，而SC相的临界温度则升高。

此外，研究人员还获得了不同相位的背景解，并验证了在这三个相中，SSC相具有最低的自由能。

附：英文原文

Title: Holographic striped superconductor with ionic lattice

Author: Li, Kai, Ling, Yi, Liu, Peng, Wu, Meng-He

Issue&Volume: 2025-02-06

Abstract: We construct a holographic model to study the striped superconductor on ionic lattices. This model features a phase diagram with three distinct phases, namely the charge density wave (CDW) phase, ordinary superconducting phase (SC) and the striped superconducting phase (SSC). The effect of the ionic lattices on the phase diagram is investigated in detail. First, due to the periodic nature of the background, different types of CDW solutions can be found below the critical temperature. Furthermore, with the increase of the lattice amplitude these solutions are locked in different commensurate states. Second, we find that the critical temperature of CDW phase decreases with the increase of the lattice amplitude, while that of the SC phase increases. Additionally, the background solutions are obtained for different phases, and it is verified that the SSC phase has the lowest free energy among all three phases.

DOI: 10.1007/JHEP02(2025)028

Source: https://link.springer.com/article/10.1007/JHEP02(2025)028