visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나

Isostatic magnetism

2016.07.04 22:02

Physics 조회 수:7877

날짜 2016-07-08 11:00 
연사  
장소 #1323(E6-2. 1st fl.) 

Isostatic magnetism

 

Jul. 08 (Fri.) 11:00 AM, #1323(E6-2. 1st fl.)
Dr. Michael Lawler(Binghampton Univ. / Cornell Univ.)

 

Abstract: Recently, a peculiar state of mechanical (phonon) systems, known as isostatic lattices, was both proposed[1] and fabricated as a metamaterial[2]. This state is on the brink of mechanical collapse and remarkably has special topological properties that guarantee the existence of soliton-like zero modes or edge modes with open boundary conditions. It is unlikely these topological phonons will be found in any solid state system since they are not on the brink of mechanical collapse. In this talk, I will discuss my group's research[3] into extending this physics to magnetic systems where ``mechanical collapse'' is replaced with the loss of magnetic order due to frustration.  I will prove mathematically that indeed an isostatic magnetic exists, a proof that remarkably employs a supersymmetry between magnons and an invented fermionic degree of freedom I have dubbed magninos. I will conclude with a discussion of the possibilities of finding an isostatic magnet among the kagome and distorted kagome families of antiferromagnets and the potential new phenomena that may be observed in such a material.


[1] C. L. Kane and T. C. Lubensky, "Topological boundary modes in isostatic lattices", Nature Physics 10, 39 (2013).
[2] B. G. Chen, N. Upadhyaya, V. Vitelli, "Non-linear conduction via solitons in a topological mechanical insulator", PNAS 111, 13004 (2014).
[3] M. J. Lawler "Supersymmetry protected phases of isostatic lattices and kagome antiferromagnets", Unpublished, see arXiv:1510.03697.


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

번호 날짜 연사 제목
공지 2025-02-24 16:00    2025년 봄학기 콜로키움 안내
공지 2025-02-27 16:00    2025년 봄 물리학과 특별세미나 (광학/응집물리 분야)
614 2025-07-03 14:00  Dr. Young-Gwan Choi (Max Planck Institute )  Quantum sensing with NV centers: nanoscale magnetometry newfile
613 2025-06-26 16:00  Prof. Eun-Ah Kim (Cornell)  Attention to Quantum Complexity file
612 2025-06-05 11:00  Dr. Bruno Tomasello (University of Catania, Italy)  Crystal-Field Anisotropy and Low-Temperature Spin Seebeck in Terbium Iron Garnet file
611 2025-06-05 10:00  Dr . On Kim (University of Mississippi)  The Final Result from the Muon g-2 Experiment at Fermilab: The World’s Most Precise Measurement of the Muon Magnetic Anomaly file
610 2025-05-28 16:00  Dr. Thiago L. M. Guedes (Forschungszentrum Jülich)  Computing the graph-changing dynamics of loop quantum gravity file
609 2025-05-26 16:00  윤석호 박사(삼성종합기술원)  Photonics in the Age of AI: Industry Trends and Perspectives file
608 2025-05-23 11:00  천상모 교수(한양대학교)  Superconductivity in Topological Materials file
607 2025-05-22 16:00  유현승 박사(삼성종합기술원)  Reconstructing Reality: Learning-based Methods for 3D Imaging and Graphics file
606 2025-05-22 14:30  Prof. Keun Su Kim (The Univ. of Yonsei)  Sublattice-interference model for Fermi arcs in cuprates file
605 2025-05-15 16:00  노찬 박사(KAIST)  Generation of multimode Gaussian quantum states and their applications for quantum computing file
604 2025-05-13 16:00  Mr. Heonjoon Park(Univ. Washington, USA)  Fractional Quantum Anomalous Hall Effect file
603 2025-05-02 11:00  Prof. Joonho Jang  Anderson localization of electrons in a moire-of-moire lattice of helical twisted trilayer graphene file
602 2025-05-01 16:00  Dr. Inwook Kim (Lawrence Livermore National Laboratory)  BSM Physics Search with Quantum Sensors file
601 2025-04-29 16:00  Dr. Tokuro Shimokawa (Okinawa Institute of Science and Technology)  Can experimentally-accessible measures of entanglement distinguish quantum spin liquid and random singlet phases? file
600 2025-04-29 10:00  Dr. Yeonju Go (Brookhaven National Laboratory)  Exploring the Hottest Matter in the Universe: Quark-Gluon Plasma through Hard Probes and Artificial Intelligence file
599 2025-04-28 16:00  지명국 (연세대 천문우주학과)  Galaxy Cluster Collisions as Cosmic Laboratories for Dark Matter file
598 2025-04-22 16:00  Dr. Nanse Esaki (The University of Tokyo)  Spin Nernst and thermal Hall effects of topological triplons in quantum dimer magnets on the maple-leaf and star lattices file
597 2025-04-22 13:30  Dr. Chaebin Kim (Georgia Institute of Technology)  Emulation of quantum correlations by classical dynamics in quantum magnets file
596 2025-04-21 16:00  Prof. Ambrose Sungseok Seo (Univ of Kentucky)  Condensed matter physics? All you gotta do is just meet me at the ... file
595 2025-04-16 13:00    오가노이드 사이언스(주) 여섯번째 세미나 시리즈 file