Wonhee Ko User Contact KOWONHEE@ORNL.GOV All Publications Observation of single-defect memristor in an MoS2 atomic sheet Realizing gapped surface states in the magnetic topological insulator MnBi2−xSbxTe4 Rational synthesis of atomically precise graphene nanoribbons directly on metal oxide surfaces Interplay between Topological States and Rashba States as Manifested on Surface Steps at Room Temperature Atomic-Scale Andreev Probe of Unconventional Superconductivity... Emergence of distinct electronic states in epitaxially-fused PbSe quantum dot superlattices Exploration of two surfaces observed in Weyl semimetal BaMnSb2 Noncontact Andreev Reflection as a Direct Probe of Superconductivity on the Atomic Scale Resistivity of Surface Steps in Bulk-Insulating Topological Insulators Understanding Heterogeneities in Quantum Materials Reshaped Weyl fermionic dispersions driven by Coulomb interactions in MoTe2 Selective Antisite Defect Formation in WS2 Monolayers via Reactive Growth on Dilute W-Au Alloy Substrates Statistical detection of Josephson, Andreev, and single quasiparticle currents in scanning tunneling microscopy van der Waals Epitaxy Growth of Bi2Se3 on a Freestanding Monolayer Graphene Membrane: Implications for Layered Materials and ... Unidirectional growth of graphene nano-islands from carbon cluster seeds on Ge(1 1 0) Magnetic states of atomic vacancies in graphite probed by scanning tunneling microscopy Facile Size-Selective Defect Sealing in Large-Area Atomically Thin Graphene Membranes for Sub-Nanometer Scale Separations Atomically thin half-van der Waals metals enabled by confinement heteroepitaxy Atomically Precise PdSe 2 Pentagonal Nanoribbons Enhancing the local conductivity of Cu films using temperature-assisted agglomerated Cu nanostructures Atomic‐Scale Manipulation and In Situ Characterization with Scanning Tunneling Microscopy Edge states and ballistic transport in zigzag graphene ribbons: The role of SiC polytypes Accessing the Intrinsic Spin Transport In a Topological Insulator by Controlling the Crossover of Bulk-to-surface Conductance Tip-induced local strain on MoS2/graphite detected by inelastic electron tunneling spectroscopy Detection of the Spin-Chemical Potential in Topological Insulators Using Spin-Polarized Four-Probe STM Key Links Curriculum Vitae ORCID Google Scholar Organizations Physical Sciences Directorate User Facilities Center for Nanophase Materials Sciences Nanomaterials Characterization Section Scanning Tunneling Microscopy Group
