Journal
JOURNAL OF PHYSICS-CONDENSED MATTER
Volume 23, Issue 4, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0953-8984/23/4/045603
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Funding
- SRFDP
- NFSC [10874017]
- National Basic Research Program of China (973 Program) [2011CB921803]
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In this paper, the Hubbard model on a honeycomb lattice is investigated by using an O(3) nonlinear sigma model. A possible candidate for a quantum non-magnetic insulator in a narrow parameter region is found near the metal-insulator transition. After studying the magnetic properties of the quantum non-magnetic insulator, anomalous spin dynamics is shown. In addition, we find that this region could be widened by hole doping.
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