Role of commensurate and incommensurate low-energy excitations in the paramagnetic to hidden-order transition of URu2Si2
نویسندگان
چکیده
P. G. Niklowitz, ∗ S. R. Dunsiger, C. Pfleiderer, P. Link, A. Schneidewind, E. Faulhaber, M. Vojta, Y.-K. Huang, and J. A. Mydosh Department of Physics, Royal Holloway, University of London, Egham TW20 0EX, UK Center for Emergent Materials, Ohio State University, Columbus, OH 43210, USA Physik Department, Technische Universität München, 85748 Garching, Germany Heinz Maier-Leibnitz Zentrum (MLZ), Technische Universität München, Lichtenbergstr. 1, 85748 Garching, Germany Jülich Centre for Neutron Science (JCNS) at Heinz Maier-Leibnitz Zentrum (MLZ), Forschungszentrum Jülich GmbH, Lichtenbergstr. 1, 85748 Garching, Germany Institut für Theoretische Physik, Technische Universität Dresden, 01062 Dresden, Germany Van der Waals-Zeeman Institute, University of Amsterdam, 1018XE Amsterdam, The Netherlands Kamerlingh Onnes Laboratory, Leiden University, 2300RA Leiden, The Netherlands
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Hidden topological order in the heavy fermion metal URu2Si2
We present a novel order parameter for the hidden order state of URu2Si2. We show via ab-initio calculation and low-energy effective tight-binding model that an incommensurate Fermi surface nesting in the partiallyfilled f -states renders a spin-orbit coupling density wave in the hidden-order state. An observable quantity for this order parameter is the polarized total angular momentum ∆mJ=±2, ...
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