5 papers
Surface-Reconstruction-Driven Insulating Behavior in Metallic Charge-Density-Wave 1T-TaSe
Sung-Hoon Lee, Doohee Cho
Bulk 1T-TaSe is metallic, yet its surface consistently exhibits an insulating gap -- a dichotomy long attributed to a surface Mott insulator driven by enhanced electron correla…
Transparency-controlled multiple charge transfer in superconducting junctions with local shot-noise scanning tunneling spectroscopy
Yudai Sato, Maialen Ortego Larrazabal, Jian-Feng Ge +6
Charge transport in superconducting junctions at finite voltages is governed by Andreev reflections, including multiple Andreev reflections, which are processes that enable multipl…
Imaging asymmetric Coulomb blockade phenomena across metallic nanoislands
Junho Bang, Byeongin Lee, Hankyu Lee +2
Coulomb blockade (CB) arises in nanoscale systems with ultra-small capacitance, where discrete charging effects dictate electron transport, enabling wide-ranging applications based…
Identifying field-tunable surface resonance states on black phosphorus
Dongming Zhao, Byeongin Lee, Junho Bang +3
Surface resonance states are electronic states localized near the surface while remaining hybridized with bulk bands. These states can strongly modify the electric-field response o…
Anomalous impurity-induced charge modulations in black phosphorus
Byeongin Lee, Junho Bang, Sayan Banerjee +6
We observe anomalous charge modulations induced by ionized indium impurities on the surface of the semiconductor black phosphorus by scanning tunneling microscopy (STM). When the i…