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Matthias Vojta: Quantum spin liquids - From solvable models to experiments

Termin Donnerstag, 7. Dezember 2017, 17.15 - 18.30 Uhr
Veranstaltungsart Kolloquium
Reihe Kolloquium des SFB 762
Einrichtung Naturwissenschaftliche Fakultät II
Veranstalter Institut für Physik, SFB 762
Veranstaltungsort Leibniz-Institut für Agrarentwicklung in Transformationsökonomien
Straße Theodor-Lieser-Straße 2
PLZ/Ort 06120 Halle (Saale)
Ansprechpartner Michael Strauch
Telefon +49 345-5525449
E-Mail michael.strauch@physik.uni-halle.de

Beschreibung

Quantum magnets play a key role in the search for novel states of matter: They can display both conventional (i.e. symmetry-breaking) and topological forms of order, together with novel types of elementary excitations, with magnetic monopoles in spin ice being a prominent example.

This talk with Prof. Matthias Vojta (Technical University, Dresden) will discuss a particularly fascinating class of frustrated magnets, so-called quantum spin liquids, in which large classical degeneracies and quantum effects conspire to produce non-trivial phases. The emergence of fractionalized excitations and artificial gauge fields will be discussed using explicit microscopic models. Physical signatures of these emergent phenomena will be highlighted. Throughout the talk, contact will be made with experiments: Candidate spin-liquid materials and key experimental results will be discussed. Finally, connections to cuprate high-temperature superconductivity will be highlighted.

Webseite http://www.physik.uni-halle.de/sfb762/kolloquien/

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