80 citations · 252 across the 11 of their papers we have counts for
11 papers
Approaching Kasteleyn transition in frustrated quantum Heisenberg antiferromagnets
Katarina Karlova, Afonso Rufino, Taras Verkholyak +5
We show that the Kasteleyn transition, the abrupt proliferation of infinite strings of defects in classical dimer and related models, can also be relevant for frustrated 2d quantum…
Symmetry breaking and thermal phase transition of the spin-1 quantum magnet with SU(3) symmetry on the simple cubic lattice
Nils Caci, Dominik Chudy, Pablo Daniel Mendez Mariscal +2
Using a combined analysis from Poisson-Dirichlet and symmetry-breaking calculations as well as quantum Monte Carlo simulations, we examine the ordered phase and the thermal phase t…
Boundary operator product expansion coefficients of the three-dimensional Ising universality class
Dorian Przetakiewicz, Stefan Wessel, Francesco Parisen Toldin
Recent advances in conformal field theory and critical phenomena have focused on the characterization of boundary or defects in a conformally invariant system. In this Letter we st…
Phase transitions in the spin-1/2 Heisenberg antiferromagnet on the dimerized diamond lattice
Ronja Bärwolf, Alexander Sushchyev, Francesco Parisen Toldin +1
Using a combination of unbiased quantum Monte Carlo simulations and a decoupled dimer mean-field theory, we investigate the thermal and quantum phase transitions of the spin-1/2 He…
Thermodynamic properties of the macroscopically degenerate tetramer-dimer phase of the spin-1/2 Heisenberg model on the diamond-decorated square lattice
Katarina Karlova, Andreas Honecker, Nils Caci +3
The spin-1/2 Heisenberg antiferromagnet on the diamond-decorated square lattice in the presence of a magnetic field displays various quantum phases including the Lieb-Mattis ferrim…
Quantitative description of long-range order in the anisotropic spin-1/2 Heisenberg antiferromagnet on the square lattice
Nils Caci, Dag-Björn Hering, Matthias R. Walther +3
The quantitative description of long-range order remains a challenge in quantum many-body physics. We provide zero-temperature results from two complementary methods for the ground…
The Higgs Mode of Planar Coupled Spin-Ladders and its Observation in CHNCuBr
Tao Ying, Kai P. Schmidt, Stefan Wessel
Polarized inelastic neutron scattering experiments recently identified the amplitude (Higgs) mode in CHNCuBr, a two-dimensional near-quantum-critical spin-1/2 tw…
Thermodynamic properties of highly frustrated quantum spin ladders: influence of many-particle bound states
A. Honecker, S. Wessel, R. Kerkdyk +3
Quantum antiferromagnets have proven to be some of the cleanest realizations available for theoretical, numerical, and experimental studies of quantum fluctuation effects. At finit…
Magnetocaloric effect in quantum spin-s chains
A. Honecker, S. Wessel
We compute the entropy of antiferromagnetic quantum spin-s chains in an external magnetic field using exact diagonalization and Quantum Monte Carlo simulations. The magnetocaloric…
Field-Induced Magnetic Order in Quantum Spin Liquids
Stefan Wessel, Maxim Olshanii, Stephan Haas
We study magnetic field-induced three-dimensional ordering transitions in low-dimensional quantum spin liquids, such as weakly coupled, antiferromagnetic spin-1/2 Heisenberg dimers…
Order by disorder from non-magnetic impurities in a two-dimensional quantum spin liquid
S. Wessel, B. Normand, M. Sigrist +1
We consider doping of non-magnetic impurities in the spin-1/2, 1/5-depleted square lattice. This structure, whose undoped phase diagram offers both magnetically ordered and spin-li…