Seminars & Symposium

[12/14] THE 27TH AIMR TEA TIME TALK

The 27th AIMR Tea Time Talk

Speaker

Prof. Yukitoshi Motome
(Department of Applied Physics, The University of Tokyo, Japan)

Title

Majorana fermions in topological magnets

Date

December 14 (Fri.), 2018 16:00-17:00

Venue

Combination Room, 5th floor, AIMR Main Bldg.

Abstract

Quantum spin liquids are exotic quantum states in insulating magnets, where conventional magnetic ordering is suppressed down to the lowest temperature by quantum fluctuations. Among the salient features is the fractionalization of spins into emergent quasi-particles. Since the proposal of an exactly soluble model by Alexei Kitaev in 2006, there has been immense progress in understanding of quantum spin liquids both theoretically and experimentally. In this talk, I will briefly review this rapidly growing topic, with a focus on the spin fractionalization. In magnets well described by the Kitaev model, the spins are fractionalized into Majorana fermions, which are expected as important constituents for quantum computing. We will discuss the recent theoretical and experimental results for the identification of the Majorana fermions.

About Tea Time Talk

AIMR’s Tea Time Talk is a kind of seminar aiming to promote exchange between world’s eminent researchers and young researchers at AIMR, held in a relaxed atmosphere at AIMR’s Friday Tea Time. The following researchers from around the world have given talks at this event so far, and participants have enjoyed discussion over a cup of tea.

27th	Dec. 14, 2018	Prof. Yukitoshi Motome (Department of Applied Physics, The University of Tokyo, Japan)
26th	July 13, 2018	Dr. Shimpei Ono (Central Research Institute of Electric Power Industry, Japan)
25th	May 11, 2018	Dr. Pierre-Antoine Geslin (Mateis lab, INSA Lyon/CNRS / ELyTMaX Lab at Tohoku University / Institute for Materials Research, Tohoku University)
24th	Apr. 27, 2018	Prof. Masaru Tsukada (AIMR, Tohoku University)
23rd	Dec. 8, 2017	Prof. Jean-Yves Cavaillé (INSA Lyon, France / ELyT MaX Lab at Tohoku University)
22nd	July 28, 2017	Prof. Nicolas Mary (INSA Lyon, France / ELyT MaX Lab at Tohoku University)
21st	July 21, 2017	Prof. Gael Sebald (INSA Lyon, France / ELyT MaX at Tohoku University)
20th	July 7, 2017	Prof. Arun Bansil (Northeastern University)
19th	June 30, 2017	Dr. Takeshi Nakanishi (AIST-Tohoku U Mathematics for Advanced Materials Open Innovation Laboratory (MathAM-OIL))
18th	June 23, 2017	Prof. Denis Arčon (Jožef Stefan Institute, Slovenia)
17th	Apr. 28, 2017	Prof. Ayumi Hirano (AIMR, Tohoku University)
16th	Nov. 29, 2016	Dr. David Guy Austing (National Research Council Canada, Canada)
15th	Sept. 30, 2016	Prof. C. Suryanarayana (University of Central Florida, U.S.A.)
14th	June 17, 2016	Prof. Tomoteru Fukumura (AIMR, Tohoku University)
13th	May 13, 2016	Prof. Jean-Yves Cavaillé (ELyT MaX (Joint Lab at Tohoku University), University of Lyon, France)
12th	June 26, 2015	Dr. B. Muralidharan (Indian Institute of Technology Bombay, India)
11th	June 27, 2014	Prof. Michael B. Santos (The University of Oklahoma, U.S.A.)
10th	Nov. 19, 2013	Dr. Pawel Hawrylak (National Research Council Canada, Canada)
9th	Oct. 1, 2013	Dr. Yuan T. Lee (Nobel laureate in Chemistry, Academia Sinica of Taiwan)
8th	June 28, 2013	Dr. Bjorn Mysen (Geophysical Laboratory, Carnegie Institution for Science, U.S.A.)
7th	Apr. 12, 2013	Prof. Yiming Li (National Chiao Tung University, Taiwan)
6th	Jan. 18, 2013	Prof. Tomasz Dietl (Polish Academy of Sciences, Poland)
5th	Aug. 31, 2012	Prof. John H. Perepezko (University of Wisconsin-Madison, U.S.A.)
4th	Aug. 17,2012	Prof. Alain Reza Yavari (Grenoble Institute of Technology, France)
3rd	Aug. 10, 2012	Prof. Alan Lindsay Greer (University of Cambridge, U.K.)
2nd	July 6, 2012	Prof. Winfried Teizer (Texas A&M University, U.S.A.)
1st	May 25, 2012	Prof. Thomas P. Russell (The University of Massachusetts Amherst, U.S.A.)

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