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- Publisher Website: 10.1103/PhysRevLett.111.066401
- Scopus: eid_2-s2.0-84881488575
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Article: Dimerized solids and resonating plaquette order in SU(N)-dirac fermions
Title | Dimerized solids and resonating plaquette order in SU(N)-dirac fermions |
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Authors | |
Issue Date | 2013 |
Publisher | American Physical Society. The Journal's web site is located at http://journals.aps.org/prl/ |
Citation | Physical Review Letters, 2013, v. 111 n. 6, article no. 066401 How to Cite? |
Abstract | We study the quantum phases of fermions with an explicit SU(N)-symmetric, Heisenberg-like nearest-neighbor flavor exchange interaction on the honeycomb lattice at half filling. Employing projective (zero temperature) quantum Monte Carlo simulations for even values of N, we explore the evolution from a weak-coupling semimetal into the strong-coupling, insulating regime. Furthermore, we compare our numerical results to a saddle-point approximation in the large-N limit. From the large-N regime down to the SU(6) case, the insulating state is found to be a columnar valence bond crystal, with a direct transition to the semimetal at weak, finite coupling, in agreement with the mean-field result in the large-N limit. At SU(4) however, the insulator exhibits a subtly different valence bond crystal structure, stabilized by resonating valence bond plaquettes. In the SU(2) limit, our results support a direct transition between the semimetal and an antiferromagnetic insulator. © 2013 American Physical Society. |
Persistent Identifier | http://hdl.handle.net/10722/268544 |
ISSN | 2023 Impact Factor: 8.1 2023 SCImago Journal Rankings: 3.040 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Lang, Thomas C. | - |
dc.contributor.author | Meng, Zi Yang | - |
dc.contributor.author | Muramatsu, Alejandro | - |
dc.contributor.author | Wessel, Stefan | - |
dc.contributor.author | Assaad, Fakher F. | - |
dc.date.accessioned | 2019-03-25T08:00:01Z | - |
dc.date.available | 2019-03-25T08:00:01Z | - |
dc.date.issued | 2013 | - |
dc.identifier.citation | Physical Review Letters, 2013, v. 111 n. 6, article no. 066401 | - |
dc.identifier.issn | 0031-9007 | - |
dc.identifier.uri | http://hdl.handle.net/10722/268544 | - |
dc.description.abstract | We study the quantum phases of fermions with an explicit SU(N)-symmetric, Heisenberg-like nearest-neighbor flavor exchange interaction on the honeycomb lattice at half filling. Employing projective (zero temperature) quantum Monte Carlo simulations for even values of N, we explore the evolution from a weak-coupling semimetal into the strong-coupling, insulating regime. Furthermore, we compare our numerical results to a saddle-point approximation in the large-N limit. From the large-N regime down to the SU(6) case, the insulating state is found to be a columnar valence bond crystal, with a direct transition to the semimetal at weak, finite coupling, in agreement with the mean-field result in the large-N limit. At SU(4) however, the insulator exhibits a subtly different valence bond crystal structure, stabilized by resonating valence bond plaquettes. In the SU(2) limit, our results support a direct transition between the semimetal and an antiferromagnetic insulator. © 2013 American Physical Society. | - |
dc.language | eng | - |
dc.publisher | American Physical Society. The Journal's web site is located at http://journals.aps.org/prl/ | - |
dc.relation.ispartof | Physical Review Letters | - |
dc.title | Dimerized solids and resonating plaquette order in SU(N)-dirac fermions | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1103/PhysRevLett.111.066401 | - |
dc.identifier.scopus | eid_2-s2.0-84881488575 | - |
dc.identifier.volume | 111 | - |
dc.identifier.issue | 6 | - |
dc.identifier.spage | article no. 066401 | - |
dc.identifier.epage | article no. 066401 | - |
dc.identifier.eissn | 1079-7114 | - |
dc.identifier.isi | WOS:000322910200006 | - |
dc.identifier.issnl | 0031-9007 | - |