Evidence for a gapped spin-liquid ground state in a kagome Heisenberg antiferromagnet

Author:

Fu Mingxuan1,Imai Takashi12,Han Tian-Heng34,Lee Young S.56

Affiliation:

1. Department of Physics and Astronomy, McMaster University, Hamilton, Ontario L8S4M1, Canada.

2. Canadian Institute for Advanced Research, Toronto, Ontario M5G1Z8, Canada.

3. James Franck Institute and Department of Physics, University of Chicago, Chicago, IL 60637, USA.

4. Materials Science Division, Argonne National Laboratory, Argonne, IL 60439, USA.

5. Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.

6. Department of Applied Physics and Department of Photon Science, Stanford University and SLAC National Accelerator Laboratory, Stanford, CA 94305, USA.

Abstract

Peeking into an exotic magnetic structure Cooling materials that contain magnetic interactions generally leads to an ordered magnetic state. In materials known as quantum spin liquids (QSLs), the geometry of the crystal lattice may prevent this ordered state from forming, even at absolute zero. The material herbertsmithite is thought to be a strong candidate for a QSL, but the nature of its ground state is still a mystery. Fu et al. measured shifts in the nuclear magnetic resonance signals of herbertsmithite to conclude that its ground state has a zero spin and is separated from the first excited state by an energy gap (see the Perspective by Furukawa). The results suggest that herbertsmithite is indeed a QSL. Science , this issue p. 655 ; see also p. 631

Funder

Canadian Institute for Advanced Research

Natural Sciences and Engineering Research Council of Canada

U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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