PIRSA:C14022 - 4 Corners Southwest Ontario Condensed Matter Physics Symposium 2014PODCAST Subscribe to podcast

4 Corners Southwest Ontario Condensed Matter Physics Symposium 2014


Collection URL: http://pirsa.org/C14022

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PIRSA:14050012  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Welcome Address
Speaker(s): Michel Gingras
Date: 01/05/2014 - 9:40 am

PIRSA:14050013  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Localization-Protected Quantum Order
Speaker(s): David Huse
Abstract: Systems that are many-body Anderson localized can exhibit symmetry-breaking long-range order or topological order in regimes where such order would be destroyed at equilibrium by thermal fluctuations. The ordering is dynamical: an ordered initial state stays ordered, being "protected" by the localiz... read more
Date: 01/05/2014 - 9:45 am

PIRSA:14050020  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Entanglement, Ergodicity, and Many-Body Localization
Speaker(s): Dmitry Abanin
Abstract: We are used to describing systems of many particles by statistical mechanics. However, the basic postulate of statistical mechanics – ergodicity – breaks down in so-called many-body localized systems, where disorder prevents particle transport and thermalization. In this talk, I will present a t... read more
Date: 01/05/2014 - 10:45 am

PIRSA:14050026  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Exotic Magnetism on the FCC Lattice of 5dn Double Perovskites
Speaker(s): Edwin Kermarrec
Abstract: In the search for new exotic quantum states, the impact of strong spin-orbit interaction has been recently underlined with the discovery of the Jeff = ½ spin orbital Mott state in the 5d5 layered perovskites iridates [1]. The double perovskite structure, where the magnetic ions form a face-centered... read more
Date: 01/05/2014 - 11:15 am

PIRSA:14050014  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Renormalization Group Analysis of a Non-Fermi Liquid System
Speaker(s): Ipsita Mandal
Abstract: We devise a renormalization group analysis for quantum field theories with Fermi surface to study scaling behaviour of non- Fermi liquid states in a controlled approximation. The non-Fermi liquid fixed points are identified from a Fermi surface in (m+1) spatial dimensions, while the co-dimension of ... read more
Date: 01/05/2014 - 11:35 am

PIRSA:14050015  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Non-Abelian String and Particle Braiding in 3+1D Topological Order
Speaker(s): Juven Wang
Abstract: String and particle excitations are examined in a class of 3+1D topological order described by a discrete gauge theory with a gauge group G and a 4-cocycle twist ω4∈H4(G,R/Z) of G's cohomology group. We demonstrate the topological spin and the spin-statistics relation for the closed strings, and ... read more
Date: 01/05/2014 - 11:55 am

PIRSA:14050016  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Experimental Sightings of the Quantum Spin Liquid
Speaker(s): Young Lee
Abstract: New states of matter may be produced if quantum effects and frustration conspire to prevent the ground state from achieving classical order. An example of a new quantum phase is the quantum spin liquid. Such spin liquids cannot be characterized by local order parameters; rather, they are distinctive... read more
Date: 01/05/2014 - 1:30 pm

PIRSA:14050024  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Fractionalized Charge Excitations in a Spin Liquid on Partially-Filled
Speaker(s): Gang Chen
Abstract: Electron charge may fractionalize in a quantum spin liquid Mott insulator. We study the Mott transition from a metal to a cluster Mott insulator in the 1/4- and 1/8-filled pyrochlore lattice systems. Such Mott transitions can arise due to charge localization in clusters or in tetrahedron units, driv... read more
Date: 01/05/2014 - 2:50 pm

PIRSA:14050025  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Generic Spin Model for Honeycomb Iridates Beyond the Kitaev Limit
Speaker(s): Jeffrey Rau
Abstract: Recently, realizations of Kitaev physics have been sought in the A2IrO3 family of honeycomb iridates, originating from oxygen-mediated exchange through edge-shared octahedra. However, for the J=1/2 Mott insulator in these materials exchange from direct d-orbital overlap is relevant, and it was propo... read more
Date: 01/05/2014 - 3:10 pm

PIRSA:14050023  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Using β-NMR to Solve Hard Problems in Soft Condensed Matter
Speaker(s): James Forrest
Abstract: Beta-detected nuclear spin relaxation of 8Li+ has been used to study important problems in polymer physics. In the first case we probe the depth dependence of molecular dynamics in high- and low-molecular-weight deuterated polystyrene (PS-d8). The average nuclear spin-lattice relaxation rate, 1/T1 a... read more
Date: 01/05/2014 - 4:00 pm

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