265 citations · 1.3k across the 20 of their papers we have counts for
19 papers · 1 filter
Quantum selection of order and dynamic properties of Kitaev-Heisenberg ferromagnet on a triangular lattice
Kaushal K. Kesharpu, Pavel A. Maksimov
Recent interest in monolayer materials motivated a search for two-dimensional ferromagnets with sizable spin-orbit coupling. Magnetic anisotropy of exchange Hamiltonian, induced by…
BaCo(AsO): Strong Kitaev, After All
Pavel A. Maksimov, Shengtao Jiang, L. P. Regnault +1
The inelastic neutron scattering results and their analysis unequivocally point to a dominant Kitaev interaction in the honeycomb-lattice cobaltate BaCo(AsO). Our aniso…
The Saga of -RuCl: Parameters, Models, and Phase Diagrams
Marius Möller, P. A. Maksimov, Shengtao Jiang +3
RuCl was likely the first ever deliberately synthesized ruthenium compound, following the discovery of the Ru element in 1844. For a long time it was known as an oxidati…
Cobalt-Based Pyroxenes: A New Playground for Kitaev Physics and Ising Model Realization
Pavel A. Maksimov, Alexey V. Ushakov, Andey F. Gubkin +8
Recent advances in the study of cobaltites have unveiled their potential as a promising platform for realizing Kitaev physics in honeycomb systems and the Ising model in weakly cou…
Proximity-induced sequence of field transitions in Kitaev candidate BaCo(AsO)
Pavel A. Maksimov
We study field-induced phase transitions of the minimal exchange model proposed earlier for BaCo(AsO), a candidate for Kitaev honeycomb model, using numerical minimizat…
Easy-plane anisotropic-exchange magnets on a honeycomb lattice: quantum effects and dealing with them
P. A. Maksimov, A. L. Chernyshev
We provide analytical and numerical insights into the phase diagram and other properties of the extended Kitaev-Heisenberg model on the honeycomb lattice in the {\it easy-plane} li…
Ab initio guided minimal model for the "Kitaev" material BaCo(AsO): Importance of direct hopping, third-neighbor exchange and quantum fluctuations
Pavel A. Maksimov, Alexey V. Ushakov, Zlata V. Pchelkina +3
By considering two {\it ab initio}-based complementary approaches, we analyze the electronic structure and extract effective spin models of BaCo(AsO), a honeycomb mater…
Phase Diagram of YbZnGaO4 in Applied Magnetic Field
William Steinhardt, P. A. Maksimov, Sachith Dissanayake +11
Recently, Yb-based triangular lattice antiferromagnets have garnered significant interest as possible quantum spin liquid candidates. One example is YbMgGaO4, which showed many pro…
Fingerprinting Triangular-Lattice Antiferromagnet by Excitation Gaps
K. E. Avers, P. A. Maksimov, P. F. S. Rosa +5
CeCdAs is a rare-earth triangular-lattice antiferromagnet with large inter-layer separation. Our field-dependent heat capacity measurements at dilution fridge temperatures…
Competition of spatially inhomogeneous states in antiferromagnetic Hubbard model
S. V. Kokanova, P. A. Maksimov, A. V. Rozhkov +1
In this work we study zero-temperature phases of the anisotropic Hubbard model on a three-dimensional cubic lattice in a weak coupling regime. It is known that, at half-filling, th…
Rethinking -RuCl
P. A. Maksimov, A. L. Chernyshev
We argue that several empirical constraints strongly restrict parameters of the effective microscopic spin model describing -RuCl. In particular, such constraints dictate a…
Magnon damping in the zigzag phase of the Kitaev-Heisenberg- model on a honeycomb lattice
R. L. Smit, S. Keupert, O. Tsyplyatyev +3
We calculate magnon dispersions and damping in the Kitaev-Heisenberg model with an off-diagonal exchange and isotropic third-nearest-neighbor interaction on a honeycomb l…
Anisotropic-Exchange Magnets on a Triangular Lattice: Spin Waves, Accidental Degeneracies, and Dual Spin Liquids
P. A. Maksimov, Zhenyue Zhu, Steven R. White +1
We present an extensive overview of the phase diagram, spin-wave excitations, and finite-temperature transitions of the anisotropic-exchange magnets on an ideal nearest-neighbor tr…
Topography of Spin Liquids on a Triangular Lattice
Zhenyue Zhu, P. A. Maksimov, Steven R. White +1
Spin systems with frustrated anisotropic interactions are of significant interest due to possible exotic ground states. We have explored their phase diagram on a nearest-neighbor t…
Disorder-Induced Mimicry of a Spin Liquid in YbMgGaO
Zhenyue Zhu, P. A. Maksimov, Steven R. White +1
We suggest that a randomization of the pseudo-dipolar interaction in the spin-orbit-generated low-energy Hamiltonian of YbMgGaO due to an inhomogeneous charge environment from…
Breakdown of Magnons in a Strongly Spin-Orbital Coupled Magnet
Stephen M. Winter, Kira Riedl, Pavel A. Maksimov +3
The description of quantized collective excitations stands as a landmark in the quantum theory of condensed matter. A prominent example occurs in conventional magnets, which suppor…
Field-induced decays in triangular-lattice antiferromagnets
P. A. Maksimov, M. E. Zhitomirsky, A. L. Chernyshev
We investigate field-induced transformations in the dynamical response of the model on the triangular lattice that are associated with the anharmonic magnon coupling and deca…
Damped Topological Magnons in the Kagomé-Lattice Ferromagnets
A. L. Chernyshev, P. A. Maksimov
We demonstrate that interactions can substantially undermine the free-particle description of magnons in ferromagnets on geometrically frustrated lattices. The anharmonic coupling,…
Field-induced dynamical properties of the model on a honeycomb lattice
P. A. Maksimov, A. L. Chernyshev
We present a comprehensive study of the field-induced dynamical properties of the nearest-neighbor antiferromagnet on a honeycomb lattice using the formalism of the non…