# Nesting instability of gapless U(1) spin liquids with spinon Fermi pockets in two dimensions

@inproceedings{Kruger2021NestingIO, title={Nesting instability of gapless U(1) spin liquids with spinon Fermi pockets in two dimensions}, author={Wilhelm G. F. Kruger and Lukas Janssen}, year={2021} }

Quantum spin liquids are exotic states of matter that may be realized in frustrated quantum magnets and feature fractionalized excitations and emergent gauge fields. Here, we consider a gapless U(1) spin liquid with spinon Fermi pockets in two spatial dimensions. Such a state appears to be the most promising candidate to describe the exotic field-induced behavior observed in numerical simulations of the antiferromagnetic Kitaev honeycomb model. A similar such state may also be responsible forβ¦Β

## 2 Citations

### Stability of ordered and disordered phases in the Heisenberg-Kitaev model in a magnetic field

- PhysicsJournal of Physics: Conference Series
- 2022

The S = 1/2 Kitaev honeycomb model has attracted significant attention as an exactly solvable example with a quantum spin liquid ground state. In an properly oriented external magnetic field, theβ¦

### Noncoplanar magnetic orders and gapless chiral spin liquid on the kagome lattice with staggered scalar spin chirality

- PhysicsSciPost Physics
- 2022

Chiral three-spin interactions can suppress long-range magnetic order
and stabilize quantum spin liquid states in frustrated lattices. We
study a spin-1/2 model on the kagome lattice involving aβ¦

## References

SHOWING 1-10 OF 152 REFERENCES

### Magnetic field-induced intermediate quantum spin liquid with a spinon Fermi surface

- PhysicsProceedings of the National Academy of Sciences
- 2019

It is shown that the gapless spin liquid harbors fractionalized neutral fermionic excitations, dubbed spinons, that remarkably form a Fermi surface in a charge insulator.

### Emergence of a field-driven U(1) spin liquid in the Kitaev honeycomb model

- PhysicsNature Communications
- 2019

Hickey and Trebst show that magnetic fields can destabilize the well-known gapped Kitaev spin liquid and induce a new gapless spin liquid, with a distinct gauge structure and neutral Fermi surface, at intermediate field strengths.

### Cooper pairing in non-Fermi liquids

- Physics
- 2015

States of matter with a sharp Fermi surface but no well-defined Landau quasiparticles arise in a number of physical systems. Examples include (i) quantum critical points associated with the onset ofβ¦

### Excitations in the field-induced quantum spin liquid state of Ξ±-RuCl3

- Physics
- 2017

The celebrated Kitaev quantum spin liquid (QSL) is the paradigmatic example of a topological magnet with emergent excitations in the form of Majorana Fermions and gauge fluxes. Upon breaking ofβ¦

### On the stability of U(1) spin liquids in two dimensions

- Physics
- 2004

We establish that spin liquids described in terms of gapless fermionic (Dirac) spinons and gapless U(1) gauge fluctuations can be stable in two dimensions, at least when the physical SU(2) spinβ¦

### Kitaev exchange and field-induced quantum spin-liquid states in honeycomb Ξ±-RuCl3

- PhysicsScientific reports
- 2016

The promise for spin-liquid behavior in the 4d5 honeycomb halide Ξ±-RuCl3 is discussed, and indications for a transition from zigzag order to a gapped spin liquid when applying magnetic field are found.

### Majorana fermions in the Kitaev quantum spin system Ξ±-RuCl 3

- Physics
- 2017

Ξ±-RuCl3 has recently attracted great interest as a possible experimental realization of the Kitaev model. Neutron scattering measurements of a single crystal of this material reveal signatures ofβ¦

### Majorana quantization and half-integer thermal quantum Hall effect in a Kitaev spin liquid

- PhysicsNature
- 2018

Half-integer quantization of the thermal Hall effect in a Kitaev spin liquid reveals chiral currents of charge-neutral Majorana fermions around the edges of the sample, produced by strong electronic correlations.

### Confinement transition of β€2 gauge theories coupled to massless fermions: Emergent quantum chromodynamics and SO(5) symmetry

- PhysicsProceedings of the National Academy of Sciences
- 2018

This work develops a field theory description of the direct transition involving an emergent nonabelian [SU(2)] gauge theory and a matrix Higgs field and finds numerical evidence for an enlarged SO(5) symmetry rotating between antiferromagnetism and valence bond solid orders proximate to criticality.

### A spinβorbital-entangled quantum liquid on a honeycomb lattice

- PhysicsNature
- 2018

This work reports a quantum-liquid state of pseudospin-1/2 moments in the 5d-electron honeycomb compound H3LiIr2O6, which is concluded to be a quantum spin liquid and opens the door to finding exotic quasiparticles in a strongly spinβorbit-coupled 5dβelectron transition-metal oxide.