218 citations · 673 across the 13 of their papers we have counts for
6 papers · 1 filter
Selective resolution of phonon modes in STM-IETS on clean and oxygen-adsorbed Cu(100) surfaces
Minjun Lee, Myungchul Oh, Hoyeon Jeon +5
The observation of surface phonon dispersion using local probes can provide important information related to local structural and thermal properties. In this study, surface phonon…
Creating Nanostructured Superconductors On Demand by Local Current Annealing
Hongwoo Baek, Jeonghoon Ha, Duming Zhang +10
Superconductivity results from a Bose condensate of Cooper-paired electrons with a macroscopic quantum wavefunction. Dramatic effects can occur when the region of the condensate is…
Quasiparticle scattering from topological crystalline insulator SnTe (001) surface states
Duming Zhang, Hongwoo Baek, Jeonghoon Ha +5
Recently, the topological classification of electronic states has been extended to a new class of matter known as topological crystalline insulators. Similar to topological insulat…
Electric Field Tuning of the Surface Band Structure of Topological Insulator Sb2Te3 Thin Films
Tong Zhang, Jeonghoon Ha, Niv Levy +2
We measured the response of the surface state spectrum of epitaxial Sb2Te3 thin films to applied gate electric fields by low temperature scanning tunneling microscopy. The gate dep…
Scanning Tunneling Microscopy of Gate Tunable Topological Insulator Bi2Se3 Thin Films
Tong Zhang, Niv Levy, Jeonghoon Ha +2
Electrical field control of the carrier density of topological insulators (TI) has greatly expanded the possible practical use of these materials. However, the combination of low t…
Pseudospin rotation and valley mixing in electron scattering at graphene edges
Changwon Park, Heejun Yang, Andrew J. Mayne +5
In graphene, the pseudospin and the valley flavor arise as new types of quantum degrees of freedom due to the honeycomb lattice comprising two sublattices (A and B) and two inequiv…