Home > 게시판 > 세미나
○ 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.
 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).
 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).
 S. Tada, Y. Tsuchiya, A. Mine, S. Pyon, T. Tamegai, S. Nagasawa, and M. Hidaka, Physics Procedia 58, 126 (2014).
 A. Mine, Y. Tsuchiya, S. Miyano, S. Pyon, T. Tamegai, S. Nagasawa, and M. Hidaka, to be published in Physica C (2015).
|공지||<12/8(Thu.) 11:00am>노벨상 소개 강연 - 2016년 노벨 물리학상: 위상 응집 물리의 탄생||2016.11.28||1090274|
|697||<12/3> Magnetic couplings, optical spectra, and spin-orbit exciton in 5d Mott insulator Sr2IrO4||2012.11.26||457221|
|696||2019학년도 2학기 콜로퀴움 일정||2019.07.17||428904|
|695||<Mar.3(Wed.)>Scaling laws in Natural Language Processing||2021.02.25||372172|
|694||2017학년도 1학기 콜로퀴움 일정||2017.01.05||333525|
|693||<10/25> Wave properties of dipole-exchange spin waves in confined magnetic thin films||2006.10.25||310441|
|692||<6/11> Advanced Physiological Optics and Its Ophthalmic Applications||2014.05.28||281374|
|691||<5/16> 물리학자가 바라 본 단백질: 왜, 어떻게 연구하는가?||2012.05.10||281129|
|690||<6/17> Oscillating Fuzzy Sphere and M5/anti M5 configurations in ABJM model||2009.06.16||263907|
|689||<8/30(Wed.)10:30>Technology convergence and applications of Large-Area Electronics, e-Textiles, bio-sensors and bio-electronics||2017.08.29||263110|
|688||<12/21> Special Seminar by Professor Ilya Vekhter||2010.11.30||260600|
|687||<3/14>Adaptive Optics for the Human Eye and Ophthalmic Applications||2008.03.12||259055|
|686||BK 석학초청 특별세미나 - Frustration and dimensional reduction in multi-orbital systems||2011.10.28||256756|
|685||2020학년도 1학기 콜로퀴움 일정||2020.01.31||256095|
|684||<Jan.14(Thu.)>Oxygen sponge effects for epitaxial manganite thin film design||2021.01.11||248579|
|683||<11/6> Graphene plasmon and Plasmonics||2013.10.31||244262|
|682||<June.12(Wed.)> Ribocomputing: Cellular Logic Computation using RNA Devices||2019.06.07||243876|
|681||<11/5(화)> 특별세미나 개최 안내||2013.11.01||234602|
|680||<5/16(토)> 세미나 개최 안내||2015.05.18||227947|
|679||<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||218243|