visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2016-04-12 16:00 
일시 Apr. 12 (Tue.), 4 PM 
장소 E6-2. 1st fl. #1323 
연사 Dr. Jeehoon Kim, POSTECH 

Confinement of Superconducting Vortices in Magnetic Force Microscopy

 

Apr. 12 (Tue.), 4 PM, E6-2. 1st fl. #1323
Dr. Jeehoon Kim, POSTECH

 

Magnetic force microscope (MFM) laboratory at CALDES in IBS has constructed a 3He MFM, operating within a vector magnet with the base temperature of 300 mK and magnetic field range of 2-2-9 T in the x-y-z direction.

We demonstrated magnetic imaging capabilities at very low temperature by imaging simultaneously superconducting vortices and magnetic stripes at T= 500 mK in the ferromagnetic superconductor ErNi2B2C which has a ferromagnetic transition below Twfm=2.3 K. The direct visualization of coexistence between superconductivity and magnetism was carried out in ErNi2B2C. The vector field performance of the apparatus was also demonstrated by the creation and imaging of Abrikosov vortices within a superconducting Nb film using a vector field. For example, an in-plane field allows creating a vortex-antivortex pair which is confined through a single flux tube, and thus showing a linear potential in distance. We show an interesting contrast of interaction nature between confined and isolated vortices.​​


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

 

번호 날짜 장소 제목
93 2018-10-11 16:00  #1323, E6-2  Dirac electrons in a graphene quasicrystal file
92 2019-09-18 16:00  #1323, E6-2  Exploring Synthetic Quantum Matter in Superconducting Circuits file
91 2019-10-25 15:00  #1323, E6-2  Physics Seminar file
90 2018-10-15 16:00  #1323, E6-2  Universal properties of macroscopic current-carrying systems file
89 2019-11-28 16:00  #1323, E6-2  Generation of coherent EUV emissions using ultrashort laser pulses file
88 2019-11-14 16:00  #1323, E6-2  Semi-classical model of polariton propagation file
87 2018-06-22 16:00  #1323, E6-2  Tuning functional properties of BiFeO3 films using strain and growth chemistry file
86 2018-06-22 16:00  #1323, E6-2  Tuning functional properties of BiFeO3 films using strain and growth chemistry file
85 2019-10-17 16:00  #1323, E6-2  Top down manipulation of Waves : From Metamaterials, Correlated Disorder, Quantum Analogy, to Digital Processing file
84 2018-10-18 16:00  #1323, E6-2  Applications of nonlinear optics for condensed matter researches file
83 2018-05-29 16:00  #1323, E6-2  Investigation on metal nanostructure/semiconductor junction and its applications file
82 2018-11-29 16:00  #1323, E6-2  양자 칸델라 실현을 위한 단일 광자 발생장치 개발 file
81 2019-09-26 16:00  #1323, E6-2  Entanglement Swapping with Autonomous Polarization-Entangled Photon-Pairs from Warm Atomic Ensemble file
80 2018-07-27 13:30  #1323, E6-2  Magnetic reversal of artificial spin ice file
79 2018-07-27 13:30  #1323, E6-2  Magnetic reversal of artificial spin ice file
78 2018-10-25 16:00  #1323, E6-2  Abelian and non-Abelian dark photons file
77 2019-11-07 16:00  #1323, E6-2  Integrated quantum photonics with solid-state quantum emitters file
76 2018-10-26 16:00  #1323, E6-2  Coexisting triple-point and nodal-line topological magnons and thermal Hall effect in pyrochlore iridates file
75 2018-11-08 16:00  #1323, E6-2  Conformality lost file
74 2019-10-29 14:30  #1323, E6-2  Quantum sensing file