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 2021학년도 1학기 콜로퀴움 일정 2021.01.13 31966
공지 <12/8(Thu.) 11:00am>노벨상 소개 강연 - 2016년 노벨 물리학상: 위상 응집 물리의 탄생 2016.11.28 641311
442 <Oct. 28(Wed.) 4:30 PM> Anomalous diffusion of single-molecules in living cells: at the interface of biology and statistical physics 2015.10.19 51367
» <Oct.20(Tue) 16:00> Electromagnetic Response and Thermomagnetic Instabilities in Three-Dimensional Nanostructured Superconductors file 2015.10.15 44199
440 <Oct.15(Thu) 16:30> Single-Molecule Approach to Homology Search & Strand Exchange in Homologous Recombination 2015.10.12 42777
439 <Oct. 14(Wed.) 4:30 PM> 국방과학기술과 물리학 2015.10.07 52508
438 <Oct. 20(Tue.) 2:00 PM> High-throughput Synthesis of Oxide Thin Films 2015.10.05 45632
437 <Oct. 7(Wed.) 4:30 PM> Observing Ultra High Energy Cosmic Rays with your Smartphone 2015.10.02 46688
436 학술세미나 개최 안내: Local Modes in Vibrational (and Rotational) Spectroscopy file 2015.10.01 42323
435 <Sep. 30(Wed.) 4:30 PM>Local electronic structures of stacking grain boundary in bilayer graphene 2015.09.23 53328
434 <Sep. 23(Wed.) 4:30 PM>Grain boundary effect in Metal : A journey of discovery from crystal to thin films without grain boundaries 2015.09.16 47639
433 <Sep. 18(Fri.) 4:00 PM> Special seminar 2015.09.16 43330
432 <Sep. 16(Wed.) 4:30 PM> Watching molecular targets in living bodies: the cutting edge in clinical medicine 2015.09.09 48353
431 <Sep. 9(Wed.) 4:30 PM> Electronic structures of strongly-correlated systems 2015.09.03 50265
430 <8/29(토)> 세미나 개최 안내 2015.09.01 44684
429 2015학년도 2학기 콜로퀴움 일정 2015.08.06 73471
428 <6/9(화)> 세미나 개최 안내 2015.06.09 43687
427 <6/10(수) 오후4:30분> Closing in on the Axion Dark Matter hypothesis 2015.06.03 46153
426 <6/2(화)> 세미나 개최 안내 2015.06.01 44729
425 <6/3(수) 오후4:30분> The Quest for Dark Matter: Discovering Its Nature Underground? 2015.05.28 45676
424 <5/26(화)> 세미나 개최 안내 2015.05.27 43460
423 <5/27(수) 오후4:30분>Controlling phases in epitaxial transition metal oxide thin films 2015.05.21 58204