• HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2021-04-02 16:00 
일시 Apr. 2 (Fri.), 04:00 PM 
장소 Online(Zoom) 
연사 Dr. Heejun Yang (KAIST) 


SRC Seminar






Van der Waals heterostructures for orbital gating-based phototransistors and electronic spectroscopy




Dr. Heejun Yang


Department of Physics, KAIST




Apr. 2 (Fri.), 04:00 PM


Online seminar
회의 ID: 857 1949 1744
암호: 757633










Each atomic layer in van der Waals (vdW) heterostructures possesses a distinct electronic band structure that can be manipulated for unique device operations. In the precise device architecture, the subtle but critical band coupling between the atomic layers,

varied by the momentum of electrons and external electric fields in device operation, has not yet been presented or applied to

designing original devices with the full potential of van der Waals heterostructures. I will introduce interlayer coupling spectroscopy at the device-scale based on the negligible quantum capacitance of two-dimensional semiconductors in lattice-orientation-tuned, resonant tunneling transistors. The effective band structures of the mono-, bi-, and quadrilayer of MoS2 and WSe2, modulated by the orientation- and external electric field-dependent interlayer coupling in device operations, could be demonstrated by the new conceptual spectroscopy overcoming the limitations of the former optical, photoemission, and tunneling spectroscopy. Based on the manipulation of the layer-by-layer potential, we achieved orbital-selective gating for tunneling phototransistor.




Contact: SunYoung Choi, (

Center for Quantum Coherence in Condensed Matter, KAIST

번호 날짜 장소 제목
공지 2022-11-25 11:00  E6-2 #1323  [Update 세미나영상](응집물리 세미나) DMFT+ NRG: From models to real materials, from local to nonlocal correlations
137 2020-10-16 14:30  Nanoscale magnetic resonance detection towards nano MRI file
136 2020-10-16 16:00  Hidden room-temperature ferroelectricity in CaTiO3 revealed by a metastable octahedral rotation pattern file
135 2020-10-23 14:00  E6-2 #1323  Plasmon spectroscopy of low-dimensional superconductors in fluctuating regime file
134 2020-11-12 16:00  E6-2 1323  2020 가을학기 광학분야 특별세미나
133 2020-11-17 12:00  Online(Zoom)  Quantum- & Nano-Photonics" 세미나 시리즈 file
132 2020-11-20 14:30  Online  Lumpy Cooper pairs in an iron-based superconductor
131 2020-11-20 16:00  Online  Coherent control of field gradient induced quantum dot spin qubits
130 2020-11-26 16:00  Online(Zoom)  2020 가을학기 광학분야 특별세미나(Light Engineering Beyond the Diffraction Limit)
129 2020-12-02 10:00  Zoom  Recent progress in Axion Dark Matter eXperiment (ADMX) technology file
128 2020-12-09 10:00  Zoom  Searching for the QCD axion with the ARIADNE experiment file
127 2020-12-10 13:55  Zoom  Consistency of Boltzmann equation and light dark matter from inflaton decay
126 2020-12-11 14:30  online  Antisymmetric interlayer exchange coupling in magnetic multilayers
125 2020-12-11 16:00  online  Atomic and electronic reconstruction at van der Waals interface in twisted 2D materials
124 2020-12-23 10:00  Online  Online workshop for Quantitative Phase Imaging file
123 2021-01-28 15:00  Zoom  Topological Transport of Deconfined Hedgehogs in Magnets file
122 2021-01-28 18:00  Online Seminar  Quantum metamaterials: concept, theory, prototypes and possible applications file
121 2021-02-02 14:30  Zoom  Quantum- & Nano-Photonics 세미나(Integrated Nanophotonics with Metamaterials, Microcomb, and Atomic Systems) file
120 2021-02-15 17:00  Zoom  Magnetic Cluster Octupole Domain evolutation in chiral antiferromagnets file
119 2021-02-17 09:00  Online  석학 대중 강연 및 강의 시리즈 file
118 2021-03-02 16:00  Online  Sensitive terahertz detection with graphene-based transistors file