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

12/03/2018

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.)

Contact

International Affairs Center (IAC), AIMR

Address : 2-1-1, Katahira, Aoba-ku, Sendai, 980-8577
TEL : +81-22-217-5971
E-MAIL : iac@grp.tohoku.ac.jp