visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2015-11-28 10:00 
연사  
장소 E6-2, #1323 

Electron Tunneling Spectroscopy of Single and Bilayer Graphene with Hexagonal Boron Nitride as Tunneling Barrier

 

Nov. 28 (Sat.) 10:00 AM, E6-2. 1st fl. #1323
Dr. Suyong Jung, Korea Research Institute of Standards and Science


We have performed electron tunneling spectroscopy measurements on gated single and bilayer graphene devices with thin hexagonal boron nitride (h-BN) as a tunneling barrier. We can directly probe electronic structures of graphene devices by varying charge density, tunneling bias voltage and external magnetic fields. In addition, we can identify several spectra features which are in good agreement with the vibrational excitations; phonons of graphene and h-BN, and a signature of local plasmonic excitation. Upon increasing external magnetic field, the development of Landau levels (LL) is observed as early as 0.2 T and we are able to discern individual LL as many as 20 as an index for both filled and empty states, which is unprecedented in previous tunneling.

 

Contact: Heung Sun Sim, Physics Dept., (hs_sim@kaist.ac.kr)

번호 날짜 연사 제목
공지 2025-04-29 10:00  Dr. Yeonju Go (Brookhaven National Laboratory)  Exploring the Hottest Matter in the Universe: Quark-Gluon Plasma through Hard Probes and Artificial Intelligence
공지 2025-05-01 16:00  Dr. Inwook Kim (Lawrence Livermore National Laboratory)  BSM Physics Search with Quantum Sensors
공지 2025-02-24 16:00    2025년 봄학기 콜로키움 안내
공지 2025-02-27 16:00    2025년 봄 물리학과 특별세미나 (광학/응집물리 분야)
» 2015-11-28 10:00    Electron Tunneling Spectroscopy of Single and Bilayer Graphene with Hexagonal Boron Nitride as Tunneling Barrier
566 2015-12-01 16:00    Introducing extra dimensions to spectroscopic studies of advanced quantum materials
565 2015-12-02 16:00    Samarium Hexaboride: Is it a Topological insulator?
564 2015-12-03 16:00    Hybrid solid state spin qubits in wide bandgap semiconductors
563 2015-12-09 11:00    Functional Imaging & Monitoring of Brain & Breast with Diffuse Light
562 2015-12-09 14:00    SWELLABLE COLLOIDAL PARTICLES ARE SWELL
561 2015-12-11 13:30    Quantum spin liquid in the 1/3 depleted triangular lattice Ba3(Ru1-xIrx)Ti2O9
560 2015-12-11 15:45    Dynamical mean field theory studies on heavy fermion system
559 2015-12-17 11:00    Wavefront engineering for in-vivo Deep brain imaging
558 2016-01-11 16:00    Mott Physics in the Strong Spin-Orbit Coupling Regime
557 2016-01-26 14:00    Electrochemistry on Nano- and Atomic Levels: Scanning Probe Microscopy Meets Deep Data
556 2016-03-07 16:00    Physics Colloquium : 2016 Spring file
555 2016-03-11 13:30    Topological phases of matter in nonequilibrium: Topology of the Wannier-Stark ladder
554 2016-03-11 13:30    Physics Seminar Serises : 2016 Spring file
553 2016-03-11 16:00    Jan. Switching handedness of of chiral solitons in Z4 topological insulators
552 2016-04-01 14:30    Interference of single charged particles without a loop and dynamic nonlocality
551 2016-04-01 16:15    Cotunneling drag effect in Coulomb-coupled quantum dots
550 2016-04-04 09:30    Radio frequency engineering
549 2016-04-05 16:00    A new impurity solver for multi-orbital systems: adaptive truncation of the Hilbert space
548 2016-04-06 15:30    Superconducting Quantum Interference Devices for Precision Detection