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View article: Is Herbertsmithite far from an ideal antiferromagnet? Ab-initio answer including in-plane Dzyaloshinskii-Moriya interactions and coupling with extra-plane impurities
Is Herbertsmithite far from an ideal antiferromagnet? Ab-initio answer including in-plane Dzyaloshinskii-Moriya interactions and coupling with extra-plane impurities Open
Herbertsmithite is known as the archetype of a S=1/2 nearest-neighbor Heisenberg antiferromagnet on the kagomé lattice, theoretically presumed to be a quantum gapless spin liquid. However, more and more experiments reveal that the m…
View article: Emergence of Chiral Order Driven by Quenched Disorder
Emergence of Chiral Order Driven by Quenched Disorder Open
Quenched disorder can destroy magnetic order, for example, when a random field is applied in a two-dimensional Ising model. Even when an order exists in the presence of quenched disorder, it is usually only the survival of the order of the…
View article: Derivation of free energy, entropy and specific heat for planar Ising models: Application to Archimedean lattices and their duals
Derivation of free energy, entropy and specific heat for planar Ising models: Application to Archimedean lattices and their duals Open
The 2d ferromagnetic Ising model was solved by Onsager on the square lattice in 1944, and an explicit expression of the free energy density f is presently available for some other planar lattices. But determining exactly the critical tem…
View article: Is Herbertsmithite far from an ideal antiferromagnet? Ab-initio answer including in-plane Dzyaloshinskii-Moriya interactions and coupling with extra-plane impurities
Is Herbertsmithite far from an ideal antiferromagnet? Ab-initio answer including in-plane Dzyaloshinskii-Moriya interactions and coupling with extra-plane impurities Open
Herbertsmithite is known as the archetype of a S=1/2 nearest-neighbor Heisenberg antiferromagnet on the Kagomé lattice, theoretically presumed to be a quantum gapless spin liquid. However, more and more experiments reveal that the model su…
View article: Derivation of the free energy, entropy and specific heat for planar Ising models: Application to Archimedean lattices and their duals
Derivation of the free energy, entropy and specific heat for planar Ising models: Application to Archimedean lattices and their duals Open
The 2d ferromagnetic Ising model was solved by Onsager on the square lattice in 1944, and an explicit expression of the free energy density $f$ is presently available for some other planar lattices. But an exact derivation of the critical …
View article: High temperature series expansions of S = 1/2 Heisenberg spin models: Algorithm to include the magnetic field with optimized complexity
High temperature series expansions of S = 1/2 Heisenberg spin models: Algorithm to include the magnetic field with optimized complexity Open
This work presents an algorithm for calculating high temperature series expansions (HTSE) of Heisenberg spin models with spin S=1/2 in the thermodynamic limit. This algorithm accounts for the presence of a magnetic field. The paper …
View article: High temperature series expansions of S = 1/2 Heisenberg spin models: algorithm to include the magnetic field with optimized complexity
High temperature series expansions of S = 1/2 Heisenberg spin models: algorithm to include the magnetic field with optimized complexity Open
This work presents an algorithm for calculating high temperature series expansions (HTSE) of Heisenberg spin models with spin $S=1/2$ in the thermodynamic limit. This algorithm accounts for the presence of a magnetic field. The paper begin…
View article: Ground-state and thermodynamic properties of the spin-$\frac{1}{2}$ Heisenberg model on the anisotropic triangular lattice
Ground-state and thermodynamic properties of the spin-$\frac{1}{2}$ Heisenberg model on the anisotropic triangular lattice Open
The spin- \frac12 triangular lattice antiferromagnetic Heisenberg model has been for a long time the prototypical model of magnetic frustration. However, only very recently this model has been proposed to be realized in the Ba _8 Co…
View article: Specific Heat of the Kagome Antiferromagnet Herbertsmithite in High Magnetic Fields
Specific Heat of the Kagome Antiferromagnet Herbertsmithite in High Magnetic Fields Open
Measuring the specific heat of herbertsmithite single crystals in high\nmagnetic fields (up to $34$ T) allows us to isolate the low-temperature kagome\ncontribution while shifting away extrinsic Schottky-like contributions. The\nkagome con…
View article: Report on 2112.08128v1
Report on 2112.08128v1 Open
The spin-1 2 triangular lattice antiferromagnetic Heisenberg model has been for a long time the prototypical model of magnetic frustration.However, only very recently this model has been proposed to be realized in the Ba 8 CoNb 6 O 24 comp…
View article: Report on 2112.08128v1
Report on 2112.08128v1 Open
The spin-1 2 triangular lattice antiferromagnetic Heisenberg model has been for a long time the prototypical model of magnetic frustration.However, only very recently this model has been proposed to be realized in the Ba 8 CoNb 6 O 24 comp…
View article: Logarithmic divergent specific heat from high-temperature series expansions: Application to the two-dimensional XXZ Heisenberg model
Logarithmic divergent specific heat from high-temperature series expansions: Application to the two-dimensional XXZ Heisenberg model Open
We present an interpolation method for the specific heat $c_v(T)$, when there\nis a phase transition with a logarithmic singularity in $c_v$ at a critical\ntemperature $T=T_c$. The method uses the fact that $c_v$ is constrained both by\nit…
View article: Turing-like patterns in an asymmetric dynamic Ising model
Turing-like patterns in an asymmetric dynamic Ising model Open
To investigate novel aspects of pattern formation in spin systems, we use a mapping between reactive concentrations in a reaction-diffusion system and spin orientations in a dynamic multiple-spin Ising model. While pattern formation in Isi…
View article: Effect of perturbations on the kagome $S=1/2$ antiferromagnet at all temperatures
Effect of perturbations on the kagome $S=1/2$ antiferromagnet at all temperatures Open
The ground state of the $S=1/2$ kagome Heisenberg antiferromagnet is now recognized as a spin liquid, but its precise nature remains unsettled, even if more and more clues point towards a gapless spin liquid. We use high temperature series…
View article: Chiral Spin Liquid on a Kagome Antiferromagnet Induced by the Dzyaloshinskii-Moriya Interaction
Chiral Spin Liquid on a Kagome Antiferromagnet Induced by the Dzyaloshinskii-Moriya Interaction Open
The quantum spin liquid material herbertsmithite is described by an antiferromagnetic Heisenberg model on the kagome lattice with a non-negligible Dzyaloshinskii-Moriya interaction (DMI). A well-established phase transition to the q=0 long…
View article: Projective symmetry group classification of chiral spin liquids
Projective symmetry group classification of chiral spin liquids Open
We present a general review of the projective symmetry group classification\nof fermionic quantum spin liquids for lattice models of spin $S=1/2$. We then\nintroduce a systematic generalization of the approach for symmetric\n$\\mathbb{Z}_2…
View article: Gapless chiral spin liquid in a kagome Heisenberg model
Gapless chiral spin liquid in a kagome Heisenberg model Open
Motivated by recent experiments on the Heisenberg S=1/2 quantum spin liquid\ncandidate material kapellasite, we classify all possible chiral (time-reversal\nsymmetry breaking) spin liquids with fermionic spinons on the kagome lattice.\nWe …
View article: Quantum Monte Carlo for correlated out-of-equilibrium nanoelectronic devices
Quantum Monte Carlo for correlated out-of-equilibrium nanoelectronic devices Open
We present a simple, general purpose, quantum Monte-Carlo algorithm for\nout-of-equilibrium interacting nanoelectronics systems. It allows one to\nsystematically compute the expansion of any physical observable (such as\ncurrent or density…