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SUMMARY:Competing Paramagnetic Phases in the Maple-Leaf Heisenberg Antifer
 romagnet
DTSTART:20260409T121500Z
DTEND:20260409T134500Z
DTSTAMP:20260410T204100Z
UID:indico-event-323@indico.physik.uni-bielefeld.de
DESCRIPTION:Speakers: Alexander Wietek\n\nGeometrically frustrated lattice
 s are promising settings for realizing quantum paramagnets and spin liquid
 s. The maple-leaf lattice has recently attracted attention as an intermedi
 ate geometry between triangular and strongly dimerized magnets that natura
 lly hosts competing local singlet patterns\, realized in several newly fou
 nd material compounds. In this talk\, I will discuss the properties of the
  spin-1/2 Heisenberg antiferromagnet on this lattice. Using exact diagonal
 ization and variational Gutzwiller projected wave-functions we uncover a r
 ich ground-state phase diagram in which several magnetic and valence-bond 
 ordered phases lie in close proximity\, placing the isotropic point near a
  non-magnetic regime consistent with a gapped Z2 spin liquid. Moreover\, I
  will discuss thermodynamic properties of the same model\, providing addit
 ional context for the low-temperature behavior.\n \nLiterature:\nPaul L. 
 Ebert\, Yasir Iqbal\, Alexander Wietek\, arXiv:2601.05308\nRobin Schäfer\
 , Paul L. Ebert\, Noah Hassan\, Johannes Reuther\, David J. Luitz\, Alexan
 der Wietek\, arXiv:2511.21806\n\nhttps://indico.physik.uni-bielefeld.de/ev
 ent/323/
URL:https://indico.physik.uni-bielefeld.de/event/323/
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