Abstract
Recent numerical work indicates the existence of a spin liquid (SL) phase that intervenes between the antiferromagnetic and semimetallic phases of the half filled Hubbard model on a honeycomb lattice. To better understand the nature of this exotic phase, we study the quantum J 1-J 2 spin model on the honeycomb lattice, which provides an effective description of the Mott insulating region of the Hubbard model. Employing the variational Monte Carlo approach, we analyze the phase diagram of the model. We find three phases-antiferromagnetic, an unusual Z 2 SL state, and a dimerized state with spontaneously broken rotational symmetry. We identify the Z 2 SL state as the likely candidate for the SL phase of the Hubbard model.
| Original language | English (US) |
|---|---|
| Article number | 087204 |
| Journal | Physical review letters |
| Volume | 107 |
| Issue number | 8 |
| DOIs | |
| State | Published - Aug 17 2011 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
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Nature of the spin liquid state of the Hubbard model on a honeycomb lattice. / Clark, B. K.; Abanin, D. A.; Sondhi, S. L.
In: Physical review letters, Vol. 107, No. 8, 087204, 17.08.2011.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Nature of the spin liquid state of the Hubbard model on a honeycomb lattice
AU - Clark, B. K.
AU - Abanin, D. A.
AU - Sondhi, S. L.
PY - 2011/8/17
Y1 - 2011/8/17
N2 - Recent numerical work indicates the existence of a spin liquid (SL) phase that intervenes between the antiferromagnetic and semimetallic phases of the half filled Hubbard model on a honeycomb lattice. To better understand the nature of this exotic phase, we study the quantum J 1-J 2 spin model on the honeycomb lattice, which provides an effective description of the Mott insulating region of the Hubbard model. Employing the variational Monte Carlo approach, we analyze the phase diagram of the model. We find three phases-antiferromagnetic, an unusual Z 2 SL state, and a dimerized state with spontaneously broken rotational symmetry. We identify the Z 2 SL state as the likely candidate for the SL phase of the Hubbard model.
AB - Recent numerical work indicates the existence of a spin liquid (SL) phase that intervenes between the antiferromagnetic and semimetallic phases of the half filled Hubbard model on a honeycomb lattice. To better understand the nature of this exotic phase, we study the quantum J 1-J 2 spin model on the honeycomb lattice, which provides an effective description of the Mott insulating region of the Hubbard model. Employing the variational Monte Carlo approach, we analyze the phase diagram of the model. We find three phases-antiferromagnetic, an unusual Z 2 SL state, and a dimerized state with spontaneously broken rotational symmetry. We identify the Z 2 SL state as the likely candidate for the SL phase of the Hubbard model.
UR - http://www.scopus.com/inward/record.url?scp=84860389297&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84860389297&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.107.087204
DO - 10.1103/PhysRevLett.107.087204
M3 - Article
AN - SCOPUS:84860389297
VL - 107
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 8
M1 - 087204
ER -