Abstract:
:Recent discovery of the half quantized thermal Hall conductivity in [Formula: see text]-RuCl[Formula: see text], a candidate material for the Kitaev spin liquid, suggests the presence of a highly entangled quantum state in external magnetic fields. This field induced phase appears between the low field zig-zag magnetic order and the high field polarized state. Motivated by this experiment, we study possible field induced quantum phases in theoretical models of the Kitaev magnets, using the two dimensional tensor network approach or infinite tensor product states. We find various quantum ground states in addition to the chiral Kitaev spin liquid occupying a small area in the phase diagram. They form a band of emergent quantum phases in an intermediate window of external magnetic fields, somewhat reminiscent of the experiment. We discuss the implications of these results in view of the experiment and previous theoretical studies.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Lee HY,Kaneko R,Chern LE,Okubo T,Yamaji Y,Kawashima N,Kim YBdoi
10.1038/s41467-020-15320-xsubject
Has Abstractpub_date
2020-04-02 00:00:00pages
1639issue
1issn
2041-1723pii
10.1038/s41467-020-15320-xjournal_volume
11pub_type
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