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DTSTAMP:20260403T220421Z
UID:5c1a0edb2b131270544627@ist.ac.at
DTSTART:20190225T100000
DTEND:20190225T110000
DESCRIPTION:Speaker: Mitali Banerjee\nhosted by Georgios Katsaros\nAbstract
 : Topological states of matter are characterized by topological invariants
 \, which are physical quantities whose values are quantized and do not dep
 end on details of the measured system. Among them the electrical Hall cond
 uctance\, which is expressed inunits of (e^2)/h is easiest to probe. In th
 e fractional quantum Hall effect regime\, fractional quantized values of t
 he electrical Hall conductance attest to topologically ordered states\,whi
 ch are states that carry quasi-particles with fractional charge and (expec
 ted) anyonic statistics. Another topological invariant\, which is much har
 der to measure\, is the thermalHall conductance\, KT\, expressed in units 
 of (\\kappa_0)T=[\\pi^2(k_B^2/3h)]TIn 1D transport it does not depend on t
 he particles charge\, particles exchange statistics\, and is even insensit
 ive to the interaction strength among the particles. A fractional value of
  the quantized thermal Hall conductance shows that the probed state of mat
 ter is non-abelian. Quasiparticles in nonabelian states may be useful for 
 topological quantum computation. In this talk\, I will report our measurem
 ents of the thermal Hall conductance of the \\vau=5/2 state to be fraction
 al\, implying non-abelian nature of the state.
LOCATION:Mondi Seminar Room 2\, Central Building\, ISTA
ORGANIZER:tguggenb@ist.ac.at
SUMMARY:Mitali Banerjee: Quantization of heat flow in the fractional quantu
 m Hall regime
URL:https://talks-calendar.ista.ac.at/events/1705
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