Journal
PHYSICAL REVIEW LETTERS
Volume 119, Issue 22, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.119.227208
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Funding
- Ministry of Science and Technology of China [2016YFA0300504]
- National Natural Science Foundation of China [11374364, 11374143, 11574392, 11674157, 11774025]
- Fundamental Research Funds for the Central Universities
- Renmin University of China [14XNLF08]
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alpha-RuCl3 is a leading candidate material for the observation of physics related to the Kitaev quantum spin liquid (QSL). By combined susceptibility, specific-heat, and nuclear-magnetic-resonance measurements, we demonstrate that alpha-RuCl3 undergoes a quantum phase transition to a QSL in a magnetic field of 7.5 T applied in the ab plane. We show further that this high-field QSL phase has gapless spin excitations over a field range up to 16 T. This highly unconventional result, unknown in either Heisenberg or Kitaev magnets, offers insight essential to establishing the physics of alpha-RuCl3.
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