132 citations · 1k across the 39 of their papers we have counts for
6 papers · 1 filter
Topological States of Matter in Frustrated Quantum Magnetism
Alexander Wietek
Frustrated quantum magnets may exhibit fascinating collective phenomena. The main goal of this dissertation is to provide conclusive evidence for the emergence of novel phases of m…
Unidirectional subsystem symmetry in a hole-doped honeycomb-lattice Ising magnet
Sambuddha Sanyal, Alexander Wietek, John Sous
We study a model of a hole-doped collinear Ising antiferromagnet on the honeycomb lattice as a route toward the realization of subsystem symmetry. We find nearly exact conservation…
Bose-Einstein condensation in honeycomb dimer magnets and
Chunhan Feng, E. Miles Stoudenmire, Alexander Wietek
An asymmetric Bose-Einstein condensation (BEC) dome was observed in a recent experiment on the quantum dimer magnet , which is modeled by a "breathing" honeycomb l…
Tunable Stripe Order and Weak Superconductivity in the Moiré Hubbard Model
Alexander Wietek, Jie Wang, Jiawei Zang +3
The moiré Hubbard model describes correlations in certain homobilayer twisted transition metal dichalcogenides. Using exact diagonalization and density matrix renormalization group…
Order, Disorder and Monopole Confinement in the Spin- XXZ Model on a Pyrochlore Tube
Chunhan Feng, Alexander Wietek, E. Miles Stoudenmire +1
We study the ground state and thermodynamic properties of the spin-half XXZ model, with an Ising interaction and a transverse exchange interaction , on a pyrochlore tu…
Fragmented Cooper pair condensation in striped superconductors
Alexander Wietek
Condensation of bosons in Bose-Einstein condensates or Cooper pairs in superconductors refers to a macroscopic occupation of a few single- or two-particle states. A condensate is c…