265 citations · 1.3k across the 20 of their papers we have counts for
20 papers
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…
Localized electron states near the armchair edge of graphene
P. A. Maksimov, A. V. Rozhkov, A. O. Sboychakov
It is known that zigzag graphene edge is able to support edge states: there is a non-dispersive single-electron band localized near the zigzag edge. However, it is generally believ…