332 citations · 2.8k across the 82 of their papers we have counts for
88 papers
Chirality, Klein duality, and the stability of Kitaev spin liquids on the star lattice
Harsh Raj, Yasir Iqbal
The star lattice hosts the Yao-Kivelson chiral spin liquid, an exactly solvable Kitaev spin liquid that breaks time reversal spontaneously and is non-Abelian or Abelian depending o…
Kitaev, semi-Dirac, and spinon quantum spin Hall liquids on the square-hexagon-dodecagon lattice: A parent projective symmetry group classification
Harsh Raj, Yasir Iqbal
The square-hexagon-dodecagon (SHD) lattice hosts an exactly solvable Kitaev spin liquid, while further-neighbor couplings frustrate its Heisenberg magnet into classically degenerat…
TheoPhysEval: Assessing AI agents at autonomous theoretical physics problem solving
A. Ramesh Chandra, Aaghaz Mahajan, Ainesh Sanyal +32
We present a suite of 50 unpublished research-level theoretical physics problems with verifiable answers. Without AI assistance, a typical problem in our collection could be solved…
Kitaev-Heisenberg model on the square-hexagon-dodecagon lattice
Saeed Barari, Yasir Iqbal, Ganapathy Baskaran +3
We study the spin- Kitaev-Heisenberg model on the square-hexagon-dodecagon lattice with a symmetry-preserving tri-coloring of the Kitaev exchanges. We focus on two cases: (i)…
From dimensional reduction to tetramerization in mixed ferro-antiferro breathing pyrochlores
Sourin Chatterjee, Kelvin Salou-Smith, Benedikt Schneider +8
We study the spin-1/2 nearest-neighbor Heisenberg model on the breathing pyrochlore lattice in the mixed ferro-antiferromagnetic regime, where one tetrahedral sublattice is antifer…
Charge order before superconductivity in the doped kagome Dirac spin liquid
Yasir Iqbal
Doping a quantum spin liquid is expected to produce a superconductor. We show that for the Dirac spin liquid on the kagome lattice the doped charge orders first. The charge is carr…
Chiral Color Ice: Exact Local Handedness Constraints and Möbius Zero Modes in Frustrated Magnets
Péter Kránitz, Yasir Iqbal, Karlo Penc
Local constraints govern the low-energy physics of frustrated matter, but familiar ice-type rules constrain flux-like quantities and are insensitive to handedness. Here we show tha…
Microscopic Spin-1 Parent Hamiltonians for Emergent Valence-Bond Loop Manifolds
Hari Borutta, Yasir Iqbal, Kirill Shtengel
We construct an exact spin- parent Hamiltonian for constrained valence-bond loop manifolds on the checkerboard and pyrochlore lattices. The Hamiltonian is local, SU(2)- and time…
What Makes Three-Dimensional Quantum Spin Liquids Possible?
Yasir Iqbal, Ronny Thomale
Quantum spin liquids are often introduced through a low-dimensional intuition: weak coordination and strong zero-point motion frustrate conventional magnetic order. This view has s…
Incommensurate Spin-Density Waves in a Frustrated Maple-Leaf Lattice Ferromagnet
Paul L. Ebert, Yasir Iqbal, Alexander Wietek
We study how ferromagnetism breaks down in the spin- nearest-neighbor Heisenberg model on the maple-leaf lattice with ferromagnetic and antiferromagnetic ,…
Symmetry-resolved monopoles and stability criteria for an Dirac spin liquid on the maple-leaf lattice
Yunchao Zhang, Andreas Feuerpfeil, Subir Sachdev +2
The Dirac spin liquid provides a useful organizing framework for frustrated magnets: it offers an algebraic parent state from which competing orders, confinement pa…
Classification and correlation signatures of chiral spin liquids on the pyrochlore lattice
Chunxiao Liu, Leon Balents, Yasir Iqbal
We present a systematic classification and variational study of chiral quantum spin liquids on the pyrochlore lattice based on fermionic parton constructions. Focusing on chiral $\…
Parent Hamiltonian construction of generalized Calogero-Sutherland models
Hari Borutta, Andreas Feuerpfeil, Yasir Iqbal
The Calogero-Sutherland model is a paradigmatic integrable system describing one-dimensional non-relativistic particles with inverse-square-type interactions. At interaction streng…
Unified gauge-theory description of quantum spin liquids on square-based frustrated lattices
Atanu Maity, Andreas Feuerpfeil, Ronny Thomale +2
Quantum spin liquids are commonly thought to be highly sensitive to lattice geometry, symmetry, and microscopic exchange patterns, leading to a proliferation of seemingly distinct…
Crystal structure, magnetic and resonant properties of decorated spin kagome system (CsCl)CuAsO
Ilya V. Kornyakov, Marina V. Likholetova, Irina E. Lezova +8
We report the synthesis and investigation of the crystal structure and physical properties of the averievite-like arsenate, $(\mathrm{CsCl})\mathrm{Cu}_5\mathrm{As}_2\mathrm{O}_{10…
Engineering altermagnetic orders on the square-kagome lattice through sublattice interference
Jonas Issing, Jannis Seufert, Michael Klett +4
We investigate the emergence of altermagnetic (AM) phases on the square-kagome lattice. Our analysis reveals that matrix element effects due to an orthogonal sublattice weight deco…
Dzyaloshinskii-Moriya-driven instabilities in square-kagome quantum antiferromagnets
Leonid S. Taran, Arnaud Ralko, Fedor V. Temnikov +3
Decorated square-kagome quantum antiferromagnets provide a natural setting in which strong frustration, lattice decoration, and spin-orbit-induced anisotropy compete on comparable…
Dimensional reduction by singlet blockade in the distorted kagome magnet YCa(CrO)(BO)
Umashankar Jena, Satish Kumar, Harald O. Jeschke +3
The distorted kagome borate YCa(CrO)(BO) has a Curie-Weiss temperature of -140 K and shows no magnetic order down to mK. We determine its Heisenberg Hamiltonia…
Higgs criticality of Dirac spin liquids on depleted triangular lattices
Andreas Feuerpfeil, Atanu Maity, Ronny Thomale +2
We investigate Higgs criticality in candidate U(1) Dirac spin liquids across a family of depleted triangular lattices: the triangular, kagome, and maple-leaf geometries. For each,…
Quantum Coulomb Liquids of Different Rank in the Breathing Pyrochlore Antiferromagnet
Lasse Gresista, Daniel Lozano-Gómez, Matthias Vojta +2
Emergent gauge fields and Coulomb liquids have long been central to the physics of frustrated pyrochlore magnets, yet their realization beyond conventional, i.e. rank-1 , spi…
Crystallography-driven molecularization of a two-dimensional spin- magnet
Hari Borutta, Tobias Müller, Ronny Thomale +2
Large-spin two-dimensional magnets are generally expected to develop conventional long-range order once the dominant exchange scale becomes appreciable. The layered spin- mapl…
Unifying Dirac Spin Liquids on Square and Shastry-Sutherland Lattices via Fermionic Deconfined Criticality
Andreas Feuerpfeil, Leyna Shackleton, Atanu Maity +3
We present a fermionic gauge theory for deconfined quantum criticality on the Shastry-Sutherland lattice and reveal its shared low-energy field-theoretic structure with the square…
Competing Paramagnetic Phases in the Maple-Leaf Heisenberg Antiferromagnet
Paul L. Ebert, Yasir Iqbal, Alexander Wietek
We establish a remarkably rich ground state phase diagram in the maple-leaf lattice spin- Heisenberg antiferromagnet as a function of the three symmetry-inequivalent nearest-n…
Unconventional orders in the maple-leaf ferro-antiferromagnetic Heisenberg model
Lasse Gresista, Dominik Kiese, Simon Trebst +1
Motivated by the search for unconventional orders in frustrated quantum magnets, we present a multi-method investigation into the nature of the quantum phase diagram of the spin-$1…