标题： 手性有限动量超导性在四层石墨烯中 显示英文标题

标题： Chiral finite-momentum superconductivity in the tetralayer graphene

摘要： 受四层石墨烯中超导性的最近发现的启发，我们研究了在随机相位近似下由密度-密度相互作用引起的配对机制。 这种方法成功地突出了在低电子密度下，自旋和谷相同电子之间的手性$p$-波配对的主导地位，同时其超导范围预测与实验结果一致。 此外，我们研究了不同超导区域的特性：SC1 和 SC2 展现出显著相位涨落的手性有限动量超导性，而 SC4 表现出向列零动量超导性，其转变温度受到配对强度的限制。 此外，我们深入探讨了手性有限动量超导性的奇特特性，强调了其在实现具有时间反演对称性的电荷-4e奇异金属中的潜在重要性。 显示英文摘要

摘要： Motivated by the recent discovery of superconductivity in tetralayer graphene, we investigate the pairing mechanism arising from density-density interactions within the random phase approximation. This approach successfully highlights the dominance of chiral $p$-wave pairing between electrons with the same spin and valley at low electron densities, while also predicting the superconducting range in agreement with experimental findings. Furthermore, we examine the characteristics of distinct superconducting regions: SC1 and SC2 exhibit chiral finite-momentum superconductivity with pronounced phase fluctuations, whereas SC4 displays nematic zero-momentum superconductivity, with its transition temperature constrained by the pairing strength. Additionally, we delve into the exotic features of chiral finite-momentum superconductivity, underscoring its potential significance for realizing a charge-4e exotic metal with time-reversal symmetry.