visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나

Bandgap Engineering of Black Phosphorus

2016.11.08 17:02

Physics 조회 수:1797

날짜 2016-11-11 13:30 
일시 Nov. 11th(Fri), 1:30 p.m. 
장소 #1323(E6-2. 1st fl.) 
연사 Dr. Keun Su Kim, POSTECH 

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 장소 제목
146 2023-07-18 11:00  E6-2, #1323  Non-Hermitian Casimir Effect of Magnons
145 2016-05-31 16:00  #1323(E6-2, 1st fl.)  Understanding 3D tokamak physics towards advanced control of toroidal plasma
144 2016-04-01 14:30  E6-2. 1st fl. #1501  Interference of single charged particles without a loop and dynamic nonlocality
» 2016-11-11 13:30  #1323(E6-2. 1st fl.)  Bandgap Engineering of Black Phosphorus
142 2021-06-11 16:00  Online seminar  Pseudogap in surface-doped black phosphorus file
141 2024-03-07 16:00  Zoom  [CAPP seminars] Development of Superconducting Transition Edge Sensors at SRON file
140 2018-11-29 16:00  #1323, E6-2  양자 칸델라 실현을 위한 단일 광자 발생장치 개발 file
139 2022-04-01 16:00  Zoom webinar  High-field Electron Transport and Interaction Induced Phenomena in 2D Materials file
138 2015-11-24 16:00  E6-2, #1323  Topology-based understanding of spin dynamics in inhomogeneously magnetized systems
137 2016-07-08 14:00  #1323(E6-2. 1st fl.)  Electronic quasiparticles in the quantum dimer model
136 2016-10-18 15:00  E6-2. 1st fl. #1323  “Hybrid quantum systems with mechanical oscillators”
135 2022-12-20 16:00  E6-2.1st fl. #1323 & zoom  Studying Baryonic Flow Across the Cosmic Scales Using Radio and Millimeter Wavelength Experiments
134 2015-12-17 11:00  E4(KI Building), Matrix Hall (2nd fl.)  Wavefront engineering for in-vivo Deep brain imaging
133 2018-07-27 13:30  #1323, E6-2  Magnetic reversal of artificial spin ice file
132 2018-07-27 13:30  #1323, E6-2  Magnetic reversal of artificial spin ice file
131 2017-07-14 15:00  #1323 (E6-2. 1st fl.)  Chiral anomaly in disordered Weyl semimetals file
130 2024-06-12 13:30  E6, #1501  Competition between superconductivity and density waves in spin-degenerate and spin-orbit-coupled Bernal bilayer graphene
129 2019-11-01 16:00  E6-2. 1st fl. #1323  Electron transport through weak-bonded contact metal with low dimensional nano-material file
128 2022-11-04 16:30  Zoom  초세대 협업연구실 Quantum- & Nano-Photonics_Multifunctional neural probes with integrated nanophotonics file
127 2019-09-27 14:30  E6-2. 1st fl. #1323  Spin-charge conversion in topological insulators for spintronic applications file