98 citations · 143 across the 25 of their papers we have counts for
16 papers · 1 filter
-Flux Tuning of Quantum Paramagnetism in the Triangular-Lattice Hubbard Model
Zhaochen Liu, Andreas Feuerpfeil, Ronny Thomale
We compare two time-reversal-symmetric triangular-lattice Hubbard models at half filling: the zero-flux model and a staggered -flux model with zero and flux through opposite…
Superconducting and charge-ordered phases from Dirac quantum spin liquids on the triangular lattice
Andreas Feuerpfeil, Ronny Thomale, Subir Sachdev +1
Triangular-lattice quantum spin-liquid insulators are observed to undergo transitions to superconductivity under pressure or doping, and exhibit enhanced terahertz conductivity whe…
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…
Momentum-Space Entanglement Signatures and Spinon Breakdown in the - Zig-Zag Heisenberg Chain
Tom Oeffner, Ludwig Bordfeldt, Andreas Feuerpfeil +5
We investigate the resilience of spinon quasiparticles in the - zig-zag spin chain () from the viewpoint of momentum-space entanglement. For small , we show t…
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…
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…
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,…
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…
Continuum theory for topological phase transitions in exciton systems
Xiaochan Cai, Armando Consiglio, Domenico Di Sante +2
An effective continuum theory is constructed for the topological phase transition of excitons in quasi-two-dimensional systems. These topological excitons crucially determine the o…
Semi-Dirac spin liquids and frustrated quantum magnetism on the trellis lattice
Sourin Chatterjee, Atanu Maity, Janik Potten +7
Geometrical frustration in quantum magnets provides a fertile setting for unconventional phases of matter, including quantum spin liquids (QSLs). The trellis lattice, with its comp…
Keldysh pseudo-fermion functional renormalization group for quantum magnetism
Janik Potten, Yasir Iqbal, Ronny Thomale +1
The functional renormalization group (FRG) approach for spin models relying on a pseudo-fermionic description has proven to be a powerful technique in simulating ground state prope…
Evidence for a Dirac spin liquid in the generalized Shastry-Sutherland model
Atanu Maity, Francesco Ferrari, Sylvain Capponi +8
We present a multimethod investigation of the recently reported quantum spin liquid (QSL) phase in the spin-1/2 Heisenberg antiferromagnet on the Shastry-Sutherland lattice. A comp…
Polaronic correlations from optimized ancilla wave functions for the Fermi-Hubbard model
Tobias Müller, Ronny Thomale, Subir Sachdev +1
We employ a family of ancilla qubit variational wave-functions [Zhang and Sachdev, Phys. Rev. Res. 2, 023172 (2020)] to describe the polaronic correlations in the pseudo-gap metal…
Candidate quantum spin liquids on the maple-leaf lattice
Jonas Sonnenschein, Atanu Maity, Chunxiao Liu +3
Motivated by recent numerical studies reporting putative quantum paramagnetic behavior in spin- Heisenberg models on the maple-leaf lattice, we classify Abrikosov fermion mean…
Evidence for a three-dimensional quantum spin liquid in PbCuTeO
S. Chillal, Y. Iqbal, H. O. Jeschke +9
The quantum spin liquid (QSL) is a highly entangled magnetic state characterized by the absence of static magnetism in its ground state. Instead, the spins fluctuate in a highly co…