42 citations · 315 across the 23 of their papers we have counts for
23 papers
Giant orbital magnetoresistance in the antiferromagnet CoO driven by dynamic orbital angular momentum interaction
Christin Schmitt, Sachin Krishnia, Edgar Galindez-Ruales +12
Recent predictions of orders of magnitude larger orbital current effects compared to spin currents have attracted significant interest. However, the full potential of giant orbital…
5d-mediated indirect exchange and effective spin Hamiltonians in Ce triangular-lattice delafossites
Leonid V. Pourovskii
Anisotropic intersite exchange interactions in frustrated rare-earth magnets are difficult to assess both theoretically and experimentally. Here, we propose an ab initio force-theo…
Ab initio spin Hamiltonians and magnetism of Ce and Yb triangular-lattice compounds
Leonid V. Pourovskii, Rafael D. Soares, Alexander Wietek
We calculate the crystal-field splitting, ground-state Kramers doublet and intersite exchange interactions within the ground-state doublet manifold using an ab initio Hubbard-I bas…
Hidden orders in spin-orbit entangled correlated insulators
Leonid V. Pourovskii, Dario Fiore Mosca, Lorenzo Celiberti +3
In many materials, ordered phases and their order parameters are easily characterized by standard experimental methods. "Hidden order" refers to a phase transition in which an orde…
Antiferro octupolar order in the 5d double perovskite SrMgReO and its spectroscopic signatures
Dario Fiore Mosca, Leonid V. Pourovskii
"Hidden"-order phases with high-rank multipolar order parameters have been recently detected in several cubic double perovskites of 5 transition metals. Here, by constructing an…
The electronic structure, crystal fields, and magnetic anisotropy in RECo magnets
Zhen Zhang, Andrey Kutepov, Leonid Pourovskii +1
The current progress in describing rare-earth-based magnets' electronic structure and magnetic properties is discussed. We use several currently popular electronic structure method…
High-field ultrasound study of elastic constants and possible magnetic symmetry transformations in UO2
E. A. Tereshina-Chitrova, L. V. Pourovskii, S. Khmelevskyi +2
In this study, we probe the coupling between magnetism and lattice dynamics in UO2, a 3k antiferromagnet that undergoes magnetic ordering below its Neel temperature (TN) of 30.8 K.…
Interplay of superexchange and vibronic effects in the hidden order of BaMgReO from first principles
Dario Fiore Mosca, Cesare Franchini, Leonid V. Pourovskii
The origin of the "hidden" quadrupolar and unconventional magnetic low-temperature orders observed in the spin-orbit double perovskite BaMgReO defies explanation through st…
Spectroscopic signatures and origin of a hidden order in BaMgReO
Jian-Rui Soh, Maximilian E. Merkel, Leonid Pourovskii +12
Clarifying the underlying mechanisms that govern ordering transitions in condensed matter systems is crucial for comprehending emergent properties and phenomena. While transitions…
Strain-driven switching between antiferromagnetic states in frustrated antiferromagnet UO2 probed by exchange bias effect
E. A. Tereshina-Chitrova, L. V. Pourovskii, S. Khmelevskyi +6
Frustrated antiferromagnets offer a captivating platform to study the intricate relationship of magnetic interactions, geometric constraints, and emergent phenomena. By controlling…
Non-collinear magnetism engendered by a hidden another order
Sergii Khmelevskyi, Leonid V. Pourovskii
Standard microscopic approach to magnetic orders is based on assuming a Heisenberg form for inter-atomic exchange interactions. These interactions are considered as a driving force…
Spin-orbital Jahn-Teller bipolarons
Lorenzo Celiberti, Dario Fiore Mosca, Giuseppe Allodi +11
Polarons and spin-orbit (SO) coupling are distinct quantum effects that play a critical role in charge transport and spin-orbitronics. Polarons originate from strong electron-phono…
Multipolar interactions and magnetic excitation gap in d spin-orbit Mott insulators
Leonid V. Pourovskii
In Mott insulators with a half-filled shell the Hund's rule coupling induces a spin-3/2 orbital-singlet ground state. The spin-orbit interaction is not expected to qualita…
Structure of the normal state and origin of Schottky anomaly in the correlated heavy fermion superconductor UTe2
S. Khmelevskyi, L. V. Pourovskii, E. A. Tereshina-Chitrova
The newly discovered UTe2 superconductor is regarded as a heavy fermion mixed-valence system with very peculiar properties within the normal and superconducting states. It shows no…
Modelling Magnetic Multipolar Phases in Density Functional Theory
Dario Fiore Mosca, Leonid V. Pourovskii, Cesare Franchini
Multipolar magnetic phases in correlated insulators represent a great challenge for Density Functional Theory (DFT) due to the coexistence of intermingled interactions, typically s…
Electronic structure of rare-earth mononitrides: quasiatomic excitations and semiconducting bands
Anna Galler, Leonid V. Pourovskii
The electronic structure of the rare-earth mononitrides LnN (where Ln=rare-earth), which are promising materials for future spintronics applications, is difficult to resolve experi…
Ferro-octupolar order and low-energy excitations in d double perovskites of Osmium
Leonid V. Pourovskii, Dario Fiore Mosca, Cesare Franchini
Conflicting interpretations of experimental data preclude the understanding of the quantum magnetic state of spin-orbit coupled double perovskites. Whether the ground state i…
Interplay between multipolar spin interactions, Jahn-Teller effect and electronic correlation in a insulator
Dario Fiore Mosca, Leonid V. Pourovskii, Beom Hyun Kim +5
In this work we study the complex entanglement between spin interactions, electron correlation and Janh-Teller structural instabilities in the 5d spin-orb…
Hidden order and multipolar exchange striction in a correlated f-electron system
Leonid V. Pourovskii, Sergii Khmelevskyi
The nature of order in low-temperature phases of some materials is not directly seen by experiment. Such "hidden orders" (HO) may inspire decades of research to identify the mechan…
Electronic correlations in dense iron: from moderate pressure to Earth's core conditions
Leonid V. Pourovskii
We discuss the role of dynamical many-electron effects in the physics of iron and iron-rich solid alloys under applied pressure on the basis of recent ab initio studies employing t…
Quadrupolar Superexchange Interactions, Multipolar Order and Magnetic Phase Transition in UO
Leonid V. Pourovskii, Sergii Khmelevskyi
The origin of non-collinear magnetic order in UO is studied by an ab initio dynamical-mean-field-theory framework in conjunction with a linear-response approach for evaluatin…
Spin-orbit and anisotropic strain effects on the electronic correlations of SrRuO
Jorge I. Facio, Jernej Mravlje, Leonid Pourovskii +2
We present an implementation of the rotationally invariant slave boson technique as an impurity solver for density functional theory plus dynamical mean field theory (DFT+DMFT). Ou…
Two-site fluctuations and multipolar superexchange interactions in strongly correlated systems
L. V. Pourovskii
An approach is proposed for evaluating dipolar and multipolar inter-site interactions in strongly correlated materials. This approach is based on the single-site dynamical mean-fie…