visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나

Aperiodic crystals in low dimensions

2016.05.10 18:55

Physics 조회 수:7236

날짜 2016-05-13 13:30 
일시 May 13 (Fri.), 1:30 PM 
장소 E6. #1501(1st fl.) 
연사 Dr. Young-Woo Son, Dept. of Physics, KIAS 

Aperiodic crystals in low dimensions

 

May 13 (Fri.), 1:30 PM, E6. #1501(1st fl.)
Dr. Young-Woo Son, Dept. of Physics, KIAS

 

The cylindrical multishell structure is one of the prevalent atomic arrangements in nanowires. Being multishell, the well-defined atomic periodicity is hardly realized in it because the periodic units of individual shells therein generally do not match except for very few cases, posing a challenge to understanding its physical properties. Here we show that moire patterns generated by superimposing atomic lattices of individual shells are decisive in determining its electronic structures. Double-walled carbon nanotubes, as an example, are shown to have spectacular variations in their electronic properties from metallic to semiconducting and further to insulating states depending on their moire patterns, even when they are composed of only semiconducting nanotubes with almost similar energy gaps and diameters. Thus, aperiodic multishell nanowires can be classified into one-dimensional moire crystals with distinct electronic structures.


Contact: Eun Gook Moon, Physics Dept., (egmoon@kaist.ac.kr)

 

번호 날짜 장소 제목
368 2018-10-04 16:00  #1323, E6-2  Engineering light absorption in an ultrathin semiconductor metafilm file
367 2018-10-11 16:00  #1323, E6-2  Dirac electrons in a graphene quasicrystal file
366 2018-10-12 14:30  E6-2. 1st fl. #1323  Quantum Advantage in Learning Parity with Noise file
365 2018-10-12 16:00  E6-2. 1st fl. #1323  Direct observation of a two-dimensional hole gas at oxide interfaces file
364 2018-10-15 16:00  #1323, E6-2  Universal properties of macroscopic current-carrying systems file
363 2018-10-16 10:00  #1323, E6-2  Capturing protein cluster dynamics and gene expression output in live cells file
362 2018-10-18 10:00  #1323, E6-2  Understanding membrane protein folding using single-molecule force techniques file
361 2018-10-18 16:00  #1323, E6-2  Applications of nonlinear optics for condensed matter researches file
360 2018-10-19 10:00  #1323, E6-2  Energy conversion processes during magnetic reconnection in a laboratory plasma file
359 2018-10-24 10:30  E6-1, Lecture Room 1501(1F)  Photonic integration of next-generation clocks and Hertz-absolute-accuarcy optical frequenncy synthesizers file
358 2018-10-25 16:00  #1323, E6-2  Abelian and non-Abelian dark photons file
357 2018-10-26 16:00  #1323, E6-2  Coexisting triple-point and nodal-line topological magnons and thermal Hall effect in pyrochlore iridates file
356 2018-11-01 16:00  #1323, E6-2  Direct holography from a single snapshot file
355 2018-11-08 16:00  #1323, E6-2  Conformality lost file
354 2018-11-09 14:30  E6-2. 1st fl. #1323  Moiré superlattices – from twisted bilayer graphene to quasicrystal file
353 2018-11-09 16:00  E6-2. 1st fl. #1323  Quantum sensing and imaging with diamond defect centers for nano-scale spin physics file
352 2018-11-21 15:00  #1323, E6-2  Engineering topological quantum physics at the atomic scale file
351 2018-11-22 15:00  E6 Room(#1323)  Experimental and Computational Study on Physical Properties based on Granular System file
350 2018-11-23 15:00  E6-2. 2st fl. #2501  Entanglement string and Spin Liquid with Holographic duality file
349 2018-11-29 16:00  #1323, E6-2  양자 칸델라 실현을 위한 단일 광자 발생장치 개발 file