14 papers
Quantum Metric Induced Critical Current Anomaly in Flat Band Josephson Junctions
Zhong C. F. Li, Yuxuan Deng, Dmitri K. Efetov +1
In well-established theories of Josephson junctions, the superconducting critical current \( I_\mathrm{c} \) increases as the normal state conductance \( \mathcal{G} \) increases.…
Quantum Metric Localization and Quantum Metric Protection
Wen-Bo Dai, Jinchao Zhao, Shuai A. Chen +1
The study of disorder effects in electronic systems is one of the central themes in physics. It is well established that in the Anderson localization regime, the localization lengt…
Quantum-Geometric Fingerprints of Altermagnetic Order in Planar Magnetotransport
Zhichun Ouyang, Wei-Jing Dai, Zi-Ting Sun +2
Identifying altermagnetic order through transport requires signatures that are sensitive to magnetic symmetry but do not rely on a net magnetization. Here we show that planar magne…
Superconductivity from Quasiparticle Pairing of Intervalley Coherent State in Rhombohedral Trilayer Graphene
Chun Wang Chau, Shuai A. Chen, K. T. Law
Superconductivity is observed in rhombohedral trilayer graphene in a narrow regime between the flavor-symmetric state and the symmetry breaking phase, which cannot be described by…
Pseudo-spin-polarized topological superconductivity in kagome RbVSb
Xilin Feng, Zi-Ting Sun, Ben-Chuan Lin +1
Kagome superconductors AVSb (A=K, Rb, Cs) have sparked considerable interest due to the presence of several intertwined symmetry-breaking phases within a single material. I…
Unconventional Josephson effects in {\it PT}-symmetric antiferromagnetic bilayers
Jin-Xin Hu, Mengli Hu, Ying-Ming Xie +1
We propose that unconventional Josephson effects can typically emerge in {\it PT}-symmetric antiferromagnetic (AFM) bilayer systems. When proximitized by a conventional superconduc…