7 papers
First-Order Topological FFLO Transition and Superconducting Diode Sign Reversal in Altermagnetic Nanowires
Bo Fu, Kaizhi Bai, Chang-An Li +1
Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state conventionally emerges via a second-order phase transition driven by finite magnetization. Here we show that a spin-orbit-coupled nano…
Disorder-Induced Phase Transitions in Altermagnetic Josephson Junctions
Chang-An Li
Altermagnetic Josephson junctions (AMJJs) can host unconventional phase and phase despite vanishing net magnetizations. Whether these phases are stable against disorder e…
Altermagnetism and its induced higher-order topology on the Lieb lattice
Xingmin Huo, Xingchuan Zhu, Chang-An Li +4
Altermagnetism (AM) has brought renewed attention to the Lieb lattice. Here, we broaden the scope of altermagnetic models on the Lieb lattice by using a general scheme based on spi…
Marginal Metals and Kosterlitz-Thouless Type Phase Transition in Disordered Altermagnets
Chang-An Li, Bo Fu, Huaiming Guo +2
Altermagnetism, a recently discovered magnetic phase characterized by spin-split bands without net magnetization, has emerged as promising platform for novel physics and potential…
Altermagnetism Induced Bogoliubov Fermi Surfaces Form Topological Superconductivity
Bo Fu, Chang-An Li, Björn Trauzettel
We propose a novel type of topological superconductivity based on Bogoliubov Fermi surfaces (BFSs) in an altermagnetic topological insulator proximitized by an s-wave superconducto…
Exceptional Andreev spectrum and supercurrent in p-wave non-Hermitian Josephson junctions
Chang-An Li, Björn Trauzettel
We investigate the spectrum of Andreev bound states and supercurrent in a -wave non-Hermitian Josephson junction (NHJJ) in one dimension. The studied NHJJ is composed of two top…