korean english


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


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 1058551
462 2008학년도 1학기 콜로퀴움 일정 안내 2008.03.04 85159
461 <3/14>Adaptive Optics for the Human Eye and Ophthalmic Applications 2008.03.12 235691
460 <3/21> Advanced Quantum Beams Based on Electron Accelerators and Lasers 2008.03.14 76917
459 2008학년도 1학기 물리세미나1 강의계획서 2008.03.18 77587
458 영어초록 예시 2008.03.18 93469
457 essay 작성요령 2008.03.18 82816
456 <3/28> Nanoscale Physics related to Resistance Switchings &Its Applications to Resistance RAM 2008.03.24 74994
455 <4/4> Novel multi-bit magnetic tagging technique for high-throughput chemical analysis 2008.03.31 119991
454 <4/11> 방사광 연 X선을 이용한 미시적 물성 연구 2008.04.07 90880
453 <5/2>방사선을 이용한 무통/무혈 수술 2008.04.28 136013
452 <5/9> Nonequilibrium Critical Phenomena: Fractals and Self-Organized Criticality 2008.05.06 97733
451 <5/16>모의실험을 이용한 물리학습 2008.05.13 77034
450 <5/23> Nanotechnology in Korea: Present Status and Perspective 2008.05.21 91665
449 <5/30> DNA 나노기술(DNA Nanotechnology) 2008.05.26 127517
448 <9/5> Dark Matter and Dark Energy in Cosmology 2008.09.01 81502
447 <9/19> Downscaling of self-aligned, all-printed polymer thin-film transistors 2008.09.16 150063
446 <9/26> High Energy Physics as e-Science 2008.09.22 78635
445 <10/10>Self-reconfigurable robots 2008.10.07 92975
444 <10/17> Graphitic Carbon Nanostructures 2008.10.27 119237
443 <10/31> 학부생을 위한 입자물리학및 끈이론 소개 2008.10.27 73421