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DTSTART:20190331T030000
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DTSTART:20181028T020000
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BEGIN:VEVENT
DTSTAMP:20260408T225108Z
UID:1553526000@ist.ac.at
DTSTART:20190325T160000
DTEND:20190325T170000
DESCRIPTION:Speaker: Silke Bühler-Paschen\nhosted by Andrew Higginbotham\n
 Abstract: If two particles are “strongly correlated”\, they are not in
 dependent of each other and any theoretical description has to take their 
 interaction energy into account. For many-particle systems such as electro
 ns in a metal this requires advanced many-body approaches. Today\, many ma
 terials classes are known to host strongly correlated electrons\, which ma
 nifests in a wealth of exotic – and frequently useful – properties\, r
 anging from high-temperature superconductivity to colossal magnetoresistan
 ce. In this talk\, I will discus a materials class where the interaction s
 trength is governed by the Kondo interaction between localized and itinera
 nt electrons\, making it highly tuneable by external parameters such as pr
 essure or magnetic field. This allows to access various quantum phases\, a
 nd transitions between them\, with a single material\, thereby enabling di
 rect comparison with theory and thus advancing the understanding. Highligh
 ts of our recent research include the observation of singular charge fluct
 uations at a magnetic quantum critical point [1]\, a squential electron lo
 calization transition in a spin-orbital coupled system [2]\, and the disco
 very of a Kondo-driven Weyl semimetal phase [3].[1] L. Prochaska\, X. Li\,
  D. C. MacFarland\, A. M. Andrews\, M. Bonta\, E. F. Bianco\, S. Yazdi\, W
 . Schrenk\, H. Detz\, A. Limbeck\, Q. Si\, E. Ringe\, G. Strasser\, J. Kon
 o\, and S. Paschen\, Singular charge fluctuations at a magnetic quantum cr
 itical point\, arXiv:808.02296.[2] V. Martelli\, A. Cai\, E. M. Nica\, M. 
 Taupin\, A. Prokofiev\, C. -C. Liu\, H. -H. Lai\, R. Yu\, R. Küchler\, A.
  M. Strydom\, D. Geiger\, J. Haenel\, J. Larrea\, Q. Si\, and S. Paschen\,
  Sequential localization and strange-metal behavior of a complex electron 
 fluid\, arXiv:1709.09376.[3] S. Dzsaber\, X. Yan\, G. Eguchi\, A. Prokofie
 v\, T. Shiroka\, P. Blaha\, O. Rubel\, S. E. Grefe\, H.-H. Lai\, Q.Si\, an
 d S. Paschen\, Giant spontaneous Hall effect in a nonmagnetic Weyl-Kondo s
 emimetal\, arXiv:1811.02819.
LOCATION:Raiffeisen Lecture Hall\, Central Building\, ISTA
ORGANIZER:arinya.eller@ist.ac.at
SUMMARY:Silke Bühler-Paschen: Quantum phases and fluctuations driven by st
 rong correlations
URL:https://talks-calendar.ista.ac.at/events/722
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