logo

korean english

게시판

Home > 게시판 > 세미나

○ Date : 2015년 10월 20일(화) 오후 4:00 ~ 5:00

○ Place :  삼성학술도서관 2층 정보교육실

○ Speaker : Prof. T. Tamegai (The University of Tokyo)

○ Topic : Electromagnetic Response and Thermomagnetic Instabilities in Three-Dimensional Nanostructured Superconductors


Abstract:

Electromagnetic response of three-dimensional nanostructured superconductors are studied by using magneto-optical (MO) imaging method. In this talk, I will introduce two recent studies on three-dimensional nanostructured superconductors. The first topic is on the flux penetration and critical state in simple three-dimensional superconducting structures, such as orthogonal strips (crosses) and stacks of squares and rectangles. The critical state field profile is not a simple superposition of critical states in the two layers. Instead, flux penetration in one layer strongly modifies that of another layer. The second topic is on one of the simplest three-dimensional structures consisting of arrays of strips, where multiple layers of two-dimensional strip arrays are stacked with some shift between the neighboring layers [1-4]. We call these three-dimensional nanostructures “shifted strip arrays (SSAs)”. In SSAs, flux avalanches are observed when the overlap between layers is large even if the width of each strip is well below the threshold value. Various forms of avalanches either perpendicular or parallel to the strip are observed in SSAs when the overlap is large. How the number of layers up to six and other parameters affect the shape and behavior of flux avalanches in SSAs will be discussed.
[1] Y. Tsuchiya, Y. Mawatari, J. Ibuka, S. Tada, S. Pyon, S. Nagasawa, M. Hidaka, M. Maezawa, and T. Tamegai, Supercond. Sci. Technol. 26, 095004 (2013).
[2] T. Tamegai, Y. Tsuchiya, S. Tada, J. Ibuka, A. Mine, S. Pyon, Y. Mawatari, S. Nagasawa, M. Hidaka, and M. Maezawa, Physica C503, 62 (2014).
[3] S. Tada, Y. Tsuchiya, A. Mine, S. Pyon, T. Tamegai, S. Nagasawa, and M. Hidaka, Physics Procedia 58, 126 (2014).
[4] A. Mine, Y. Tsuchiya, S. Miyano, S. Pyon, T. Tamegai, S. Nagasawa, and M. Hidaka, to be published in Physica C (2015).

번호 제목 날짜 조회 수
공지 <12/8(Thu.) 11:00am>노벨상 소개 강연 - 2016년 노벨 물리학상: 위상 응집 물리의 탄생 2016.11.28 1090454
518 <Sep. 13(Wed.) 4:30 PM> 우주론 100년, 어디로 가고 있는가? 2017.09.06 48750
517 <Sep. 6(Wed.) 4:30 PM> Particles in the Universe 2017.09.01 47451
516 <8/30(Wed.)10:30>​Technology convergence and applications of Large-Area Electronics, e-Textiles, bio-sensors and bio-electronics 2017.08.29 263388
515 <8/21(Mon.)10:30>Non-Gaussianity as a Particle Detector 2017.08.17 69773
514 <7/24(Mon.)11:00>Antenna Arrays for Astroparticle Physics: Radio Detection of High-Energy Cosmic Rays 2017.07.19 123003
513 <7/20(Thu.)14:00>Engineering and probing topological properties of Dirac semimetal films by asymmetric charge transfer 2017.07.18 127470
512 2017학년도 2학기 콜로퀴움 일정 2017.07.04 109130
511 <June 14(Wed.) 4:30 PM> Stellar core collapse: success or failure, and future probes 2017.06.08 73008
510 <June 7(Wed.) 4:30 PM> 물리학으로 보는 인간과 사회 2017.05.31 51863
509 <May 31(Wed.) 4:30 PM>중력파, 새로운 천문학과 물리학의 시작 2017.05.24 52308
508 <May 24(Wed.) 4:30 PM>누구나 과학을 통찰하는 법 2017.05.17 52750
507 <May 17(Wed.) 4:30 PM>Printed Electronics 2017.05.10 123702
506 <May 10(Wed.) 4:30 PM>Trend and beyond of semiconductor technology (반도체 미세화 및 신기술 동향) 2017.05.04 56637
505 <April. 12 (Wed.) 4:30 PM>디랙물질을 통해서 본 강상관 계의 양자 홀로그래피적 조명: 2017.04.05 51808
504 <4/5(Wed.) 18:00pm> 저에너지 가속기의 활용 2017.04.05 50097
503 <4/5(Wed.) 11:00am>Adhesion forces between nanoparticles in gas-phase processes and application 2017.04.03 112177
502 <April. 5 (Wed.) 4:30 PM>Majorana quasiparticles emergent in Kitaev quantum magnets 2017.03.31 84989
501 <Mar. 29(Wed.) 4:30 PM>Search for New Elements 2017.03.22 105755
500 <Mar. 22(Wed.) 4:30 PM>Symmetry and topology in the electronic structure of solids 2017.03.15 57287
499 <Mar. 15(Wed.) 4:30 PM>반도체 Fab Process와 물리학 전공자 2017.03.14 54736