81 citations · 314 across the 15 of their papers we have counts for
15 papers
Atomic scale imaging of sign-changing order parameter in superconducting FeSe with Tunneling Andreev Reflection
Wonhee Ko, Sang Yong Song, Jiaqiang Yan +2
The pairing symmetry of the superconducting order parameter in iron-based superconductors has been a subject of debate, with various models proposing s-wave, d-wave, and mixed comb…
Interplay between Topological States and Rashba States as Manifested on Surface Steps at Room Temperature
Wonhee Ko, Seoung-Hun Kang, Jason Lapano +7
The unique spin texture of quantum states in topological materials underpins many proposed spintronic applications. However, realizations of such great potential are stymied by per…
Anti-site defect-induced disorder in compensated topological magnet MnBiSbTe
Felix Lüpke, Marek Kolmer, Jiaqiang Yan +5
The gapped Dirac-like surface states of compensated magnetic topological insulator MnBiSbTe (MBST) are a promising host for exotic quantum phenomena such as the qua…
Non-contact Andreev reflection as a direct probe of superconductivity on the atomic scale
Wonhee Ko, Jose L. Lado, Petro Maksymovych
Direct detection of superconductivity has long been a key strength of point-contact Andreev reflection. However, its applicability to atomic-scale imaging is limited by the mechani…
Reshaped Weyl fermionic dispersions driven by Coulomb interactions in MoTe2
Seoung-Hun Kang, Sangjun Jeon, Hyun-Jung Kim +7
We report the direct evidence of impacts of the Coulomb interaction in a prototypical Weyl semimetal, MoTe2, that alter its bare bands in a wide range of energy and momentum. Our q…
Van der Waals Epitaxy on Freestanding Monolayer Graphene Membrane by MBE
Jason Lapano, Ondrej Dyck, Andrew Lupini +8
Research on two-dimensional materials has expanded over the past two decades to become a central theme in condensed matter research today. Significant advances have been made in th…