72 citations · 248 across the 15 of their papers we have counts for
26 papers · 1 filter
Precursors to Topological Phase Transition in Topological Ladders
Seungju Han, Mahn-Soo Choi
We study the coupling of two topologcal subsystems in distinct topological states, and show that it leads to a precursor behavior of the topological phase transition in the overall…
Probing Kondo spin fluctuations with scanning tunneling microscopy and electron spin resonance
Yinan Fang, Stefano Chesi, Mahn-Soo Choi
We theoretically analyze a state-of-the-art experimental method based on a combination of electron spin resonance and scanning tunneling microscopy (ESR-STM), to directly probe the…
Mixed-Valence Transition on a Quantum-Dot Coupled to Superconducting and Spin-Polarized Leads
Minchul Lee, Mahn-Soo Choi
We consider a quantum dot coupled to both superconducting and spin-polarized electrodes, and study the triad interplay of the Kondo effect, superconductivity, and ferromagnetism, a…
Interplay between superconductivity and magnetism in one-unit-cell LaAlO3 capped with SrTiO3
Yongsu Kwak, Woojoo Han, Thach D. N. Ngo +13
To form a conducting layer at the interface between the oxide insulators LaAlO3 and SrTiO3, the LaAlO3 layer on the SrTiO3 substrate must be at least four unit-cells-thick. The LaA…
Precision determination of a fluxoid quantum's magnetic moment in a superconducting micro-ring
Heonhwa Choi, Yun Won Kim, Soon-Gul Lee +3
Using dynamic cantilever magnetometry and experimentally determining the cantilever's vibrational mode shape, we precisely measured the magnetic moment of a lithographically define…
Spatiotemporal Evolution of Topological Order Upon Quantum Quench Across the Critical Point
Minchul Lee, Seungju Han, Mahn-Soo Choi
We consider a topological superconducting wire and use the string order parameter to investigate the spatiotemporal evolution of the topological order upon a quantum quench across…