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research article

Maple leaf antiferromagnet in a magnetic field

Ghosh, Pratyay
•
Seufert, Jannis
•
Mueller, Tobias
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August 29, 2023
Physical Review B

We analyze the quantum antiferromagnet on the maple leaf lattice in the presence of a magnetic field. Starting from its exact dimer ground state and for a magnetic field strength of the order of the local dimer spin-exchange coupling, we perform a strong-coupling expansion and extract an effective hard-core boson model. The interplay of effective many-body interactions, suppressed single-particle dynamics, and correlated hopping gives way to an intriguing series of superfluid to insulator transitions which correspond to magnetization plateaus in terms of the maple leaf spin degrees of freedom. While we find plateaus at intermediate magnetization to be dominated by bosonic density wave order, we conjecture plateau formation from multiboson bound states due to correlated hopping for lower magnetization.

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Type
research article
DOI
10.1103/PhysRevB.108.L060406
Web of Science ID

WOS:001127183500003

Author(s)
Ghosh, Pratyay
Seufert, Jannis
Mueller, Tobias
Mila, Frederic  
Thomale, Ronny
Date Issued

2023-08-29

Publisher

Amer Physical Soc

Published in
Physical Review B
Volume

108

Issue

6

Article Number

L060406

Subjects

Technology

•

Physical Sciences

•

Exact Ground-State

•

Quantum

•

Plateaus

•

Chain

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
CTMC  
FunderGrant Number

Deutsche Forschungsgemeinschaft (DFG, German Research Foundation)

258499086-SFB 1170

Wurzburg-Dresden Cluster of Excellence on Complexity and Topology in Quantum Matter -ct.qmat

390858490-EXC 2147

Swiss National Science Foundation

182179

Available on Infoscience
February 21, 2024
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/204951
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