Berlin 2018 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 41: Frustrated Magnets - Spin Liquids - Experiments
TT 41.4: Vortrag
Dienstag, 13. März 2018, 11:00–11:15, H 3005
A new three dimenisional quantum spin liquid — •Shravani Chillal1, Yasir Iqbal2, Harald O. Jeschke3, Jose A. Rodriguez-Rivera4,5, Robert Bewley6, Pascal Manuel6, Dmitry Khalyavin6, Paul Steffens7, Ronny Thomale8, A. T. M. Nazmul Islam1, Johannes Reuther1,9, and Bella Lake1,10 — 1Helmholtz-Zentrum Berlin für Materialien und Energie, Berlin, Germany — 2Indian Institute of Technology Madras, Chennai , India — 3Okayama University, Okayama, Japan — 4NIST Center for Neutron Research, Gaithersburg, USA — 5University of Maryland, USA — 6ISIS Facility, STFC Rutherford Appleton Laboratory, UK — 7Institut Laue-Langevin, Grenoble, France — 8Julius-Maximilian’s University of Würzburg, Würzburg, Germany — 9Freie Universität Berlin, Berlin, Germany — 10Technische Universität Berlin, Berlin, Germany
Quantum spin liquid (QSL) is a highly entangled magnetic state characterized by the lack of static magnetism, however, accompanied by highly correlated excitations known as spinons. While there are few experimental examples of QSL in two dimensionally frustrated lattices, very little is known about the possibility in three dimensional (3D) Heisenberg systems. Here we report a new type of 3D lattice that enables spin liquid behavior in a so called hyper-hyperkagome lattice which manifests in the compound PbCuTe2O6. Using a combination of experiment and theory we show that this system satisfies all the requirements for a quantum spin liquid including the absence of static magnetism and the characteristic continuum of spinon excitations.