visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나

Bandgap Engineering of Black Phosphorus

2016.11.08 17:02

Physics 조회 수:5650

날짜 2016-11-11 13:30 
연사  
장소 #1323(E6-2. 1st fl.) 

Bandgap Engineering of Black Phosphorus

 

Nov. 11th(Fri), 1:30 p.m. #1323(E6-2. 1st fl.)
Dr. Keun Su Kim, POSTECH

 

Two-dimensional (2D) atomic crystals have emerged as a class of materials that may impact our future electronics technology. A key issue is controlling their electronic state to overcome the limit of natural properties. Black phosphorus is an emergent 2D atomic crystal that is attracting growing interest owing to its promising device characteristics1. In this talk, I will introduce our recent angle-resolved photoemission spectroscopy studies on the widely tunable bandgap of black phosphorus. The in-situ deposition of alkali-metal atoms on the surface of black phosphorus produces strong vertical electric field, modulating the bandgap from a narrow-gap semiconductor to a zero-gap semimetal2. At the critical point of this semiconductor-semimetal transition, black phosphorus is an unusual zero-gap semimetal, whose band dispersion is highly anisotropic, linear in armchair and quadratic in zigzag directions2. I will also briefly discuss about the future direction of this emerging field.


References
1. X. Ling et al., PNAS 112, 4523 (2014).
2. J. Kim et al., Science 349, 723 (2015).

 

Contact: MyungJoon Han, Physics Dept., (mj.han@kaist.ac.kr)

 

번호 날짜 연사 제목
공지 2025-02-24 16:00    2025년 봄학기 콜로키움 안내
공지 2025-02-27 16:00    2025년 봄 물리학과 특별세미나 (광학/응집물리 분야)
465 2015-12-17 11:00    Wavefront engineering for in-vivo Deep brain imaging
464 2022-12-20 16:00    Studying Baryonic Flow Across the Cosmic Scales Using Radio and Millimeter Wavelength Experiments
463 2016-10-18 15:00    “Hybrid quantum systems with mechanical oscillators”
462 2016-07-08 14:00    Electronic quasiparticles in the quantum dimer model
461 2015-11-24 16:00    Topology-based understanding of spin dynamics in inhomogeneously magnetized systems
460 2022-04-01 16:00    High-field Electron Transport and Interaction Induced Phenomena in 2D Materials file
459 2018-11-29 16:00    양자 칸델라 실현을 위한 단일 광자 발생장치 개발 file
458 2024-03-07 16:00    [CAPP seminars] Development of Superconducting Transition Edge Sensors at SRON file
457 2021-06-11 16:00    Pseudogap in surface-doped black phosphorus file
» 2016-11-11 13:30    Bandgap Engineering of Black Phosphorus
455 2016-04-01 14:30    Interference of single charged particles without a loop and dynamic nonlocality
454 2016-05-31 16:00    Understanding 3D tokamak physics towards advanced control of toroidal plasma
453 2023-07-18 11:00    Non-Hermitian Casimir Effect of Magnons
452 2024-06-13 16:00    Magnonic $\varphi$ Josephson junction and its non-Hermitian Josephson diode effect
451 2023-09-14 16:00    [CAPP seminar] Dark matter searches in Water Cherenkov Detectors file
450 2018-05-11 14:30    Disordered Floquet topological insulators file
449 2016-12-09 16:00    Shift Charge and Spin Photocurrents in Dirac Surface States of Topological Insulator
448 2022-05-13 14:30    Topological Superconducting Spintronics Towards Zero-Power Computing Technologies file
447 2021-07-29 14:00    Gravitationally Induced Dark Sector and Inflationary Dynamics file
446 2015-12-11 13:30    Quantum spin liquid in the 1/3 depleted triangular lattice Ba3(Ru1-xIrx)Ti2O9