![]() ![]() ![]() Topological phases have not been observed in CeRu4Sn6, but it is similar to a number of other materials in which these have been observed. ![]() In the study Si and colleagues, including experimentalist Silke Bühler-Paschen, a longtime collaborator at TU Wien, and Collin Broholm of both NIST and Johns Hopkins, studied a semimetal made from one part cerium, four parts ruthenium and six parts tin. "Maybe quantum criticality is not the only mechanism that can nucleate topological phases of matter, but we know quantum criticality provides a setting in which things are fluctuating and from which new states of matter can emerge," said Si, director of the Rice Center for Quantum Materials (RCQM). "The thought that underlies this work is, 'Why not quantum criticality?'" said study co-author Qimiao Si, a theoretical physicist from Rice who's spent two decades studying the interplay between quantum criticality and one of the most mysterious processes in modern physics, high-temperature superconductivity. In an open access paper published online in Science Advances, researchers from Rice University, Johns Hopkins University, the Vienna University of Technology (TU Wien) and the National Institute of Standards and Technology (NIST) present the first experimental evidence to suggest that quantum criticality - a disordered state in which electrons waver between competing states of order - may give rise to topological phases, "protected" quantum states that are of growing interest for quantum computation. and Austrian physicists searching for evidence of quantum criticality in topological materials have found one of the most pristine examples yet observed. (Photo by Jeff Fitlow/Rice University) view moreĬredit: Photo by Jeff Fitlow/Rice University Wiess Professor of Physics and Astronomy at Rice University and director of the Rice Center for Quantum Materials. ![]()
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