Tensor-network study of the ground state of the maple-leaf Heisenberg antiferromagnet.
We study the quantum phase diagram of the spin-1/2 nearest-neighbor Heisenberg model on the maple-leaf lattice using infinite projected entangled pair states (iPEPS) combined with a corner transfer matrix renormalization group scheme adapted to C-symmetric lattices. Focusing on the fully antiferroma...
| Published in: | Zeitschrift für Naturforschung Section A: A Journal of Physical Sciences Vol. 81; no. 6; pp. 453 - 460 |
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| Main Authors: | , , |
| Format: | Article |
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De Gruyter
Jun2026
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| Subjects: | |
| Online Access: | View this record in EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=hlh&AN=194554712&site=ehost-live header: @attributes: shortDbName: hlh uiTerm: 194554712 longDbName: Humanities International Complete uiTag: AN controlInfo: bkinfo: jinfo: jid: 09320784 FL07 jtl: Zeitschrift für Naturforschung Section A: A Journal of Physical Sciences issn: 09320784 maglogo: N pubinfo: dt: Jun2026 vid: 81 iid: 6 pid: 1734 pub: De Gruyter artinfo: ui: 194554712 10.1515/zna-2025-0409 ppf: 453 ppct: 7 formats: tig: atl: Tensor-network study of the ground state of the maple-leaf Heisenberg antiferromagnet. aug: au: Nyckees, Samuel Ghosh, Pratyay Mila, Frédéric affil: Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland Now at Université Grenoble Alpes, CEA List, 38000 Grenoble, France su: Heisenberg model Antiferromagnetism Heisenberg, Werner, 1901-1976 Magnetic structure Phase diagrams Quantum phase transitions sug: subj: Heisenberg model Antiferromagnetism Heisenberg, Werner, 1901-1976 Magnetic structure Phase diagrams Quantum phase transitions keyword: antiferromagnet exact dimer frustrated magnetism spin models tensor tensor network ab: We study the quantum phase diagram of the spin-1/2 nearest-neighbor Heisenberg model on the maple-leaf lattice using infinite projected entangled pair states (iPEPS) combined with a corner transfer matrix renormalization group scheme adapted to C-symmetric lattices. Focusing on the fully antiferromagnetic J–J model with J = J ≔ J, we map out the ground-state phase diagram as a function of the dimer coupling J. Our results show that the system hosts only two phases: a magnetically ordered canted-120° phase and an exact dimer singlet product phase. We identify a first-order transition between these two phases at J/J ≈ 1.45. Within the magnetically ordered phase, we observe small but finite magnetic moments. We also resolve the quantum renormalization of the canting angle, which deviates from the classical prediction over almost the entire magnetically ordered phase. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: Y dt: @attributes: year: 2026 holdings: @attributes: islocal: N |
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