6 papers
Topological multicomponent superconductivity with sizable -wave admixture in twisted bilayer cuprates
Yu-Hang Li, Congjun Wu, Wang Yang
We investigate multicomponent superconductivity in twisted bilayer cuprates with order parameter , where is the symmetric layer-resolved…
Response tensor for the superconducting (Josephson) diode effect
Qiong Qin, Jie Wu, Congjun Wu
We propose a response tensor to characterize the non-reciprocal critical current response of the superconducting (Josephson) diode effect. It describes the coupl…
Time-reversal symmetry breaking superconductivity in the presence of loop-current fluctuations
Zenghui Fan, Runyu Ma, Stefano Chesi +2
Loop currents have been proposed in various superconductors and recently confirmed in kagome materials, raising a fundamental question regarding their intrinsic connection to super…
Chiral finite-momentum superconductivity in the tetralayer graphene
Qiong Qin, Congjun Wu
Motivated by the recent experimental discovery of superconductivity in rhombohedral tetralayer graphene, we investigate the pairing mechanism arising from the density-density inter…
Nonvolatile electric switching of critical current in cross-bar superconducting junctions
Jiajun Ma, Jingyi He, Qiong Qin +5
Superconducting (SC) diodes are key passive building blocks for future SC electronics. However, realizing their active counterparts is essential for functional logic. Here, we demo…
Revealing altermagnetic Fermi surfaces with two Kondo impurities
Qiong Qin, Toshihiro Sato, Marcin Raczkowski +3
Motivated by recent advances in the study of altermagnetism, or unconventional magnetism, and in the realization and manipulation of two-impurity Kondo physics in real materials, w…