256 citations · 1.3k across the 36 of their papers we have counts for
37 papers
Orbital Selective Mott Transition Effects and Non-Trivial Topology of Iron Chalcogenide
Minjae Kim, Sangkook Choi, Walber Hugo Brito +1
The iron-based superconductor FeSeTe (FST) has recently gained significant attention as a host of two distinct physical phenomena: () Majorana zero modes which can…
Conductance oscillations of antiferromagnetic layer tunnel junctions
Sang-Jun Choi, Hai-Peng Sun, Björn Trauzettel
We study the conductance oscillation of an antiferromagnetic layer tunnel junction composed of antiferromagnetic topological insulators (MTIs) such as MnBiTe. In presen…
Nonequilibrium Fractional Josephson Effect
Aritra Lahiri, Sang-Jun Choi, Björn Trauzettel
Josephson tunnel junctions exhibit a supercurrent typically proportional to the sine of the superconducting phase difference . In general, a term proportional to is al…
Stacking-Induced Symmetry-Protected Topological Phase Transitions
Sang-Jun Choi, Björn Trauzettel
We study symmetry-protected topological (SPT) phase transitions induced by stacking two gapped one-dimensional subsystems in BDI symmetry class. The topological invariant of the en…
Helical Topological Superconducting Pairing at Finite Excitation Energies
Masoud Bahari, Song-Bo Zhang, Chang-An Li +4
We propose helical topological superconductivity away from the Fermi surface in three-dimensional time-reversal-symmetric odd-parity multiband superconductors. In these systems, pa…
Frozen spin ratio and the detection of Hund correlations
Siheon Ryee, Sangkook Choi, Myung Joon Han
We propose a way to identify strongly Hund-correlated materials by unveiling a key signature of Hund correlations at the two-particle level. The defining feature is the {\it sign}…