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We analyze possible ways to calculate magnetic exchange interactions within the density functional theory plus dynamical mean-field theory (DFT+DMFT) approach in the paramagnetic phase. Using the susceptibilities obtained within the ladder…

Strongly Correlated Electrons · Physics 2023-06-09 A. A. Katanin , A. S. Belozerov , A. I. Lichtenstein , M. I. Katsnelson

Electron bilayers in a strong magnetic field exhibit insulating behavior for a wide range of interlayer separation $d$ for total Landau level fillings $\nu\leq 1/2$, which has been interpreted in terms of a pinned crystal. We study…

Strongly Correlated Electrons · Physics 2018-07-04 William N. Faugno , Alex J. Duthie , David J. Wales , Jainendra K. Jain

We present a theoretical study of the low-energy physics of a quarter-hole-filled two-orbital bilayer Hubbard model motivated by transition-metal bilayer systems with strong orbital-selective interlayer hybridization. By explicitly treating…

Strongly Correlated Electrons · Physics 2026-01-13 Guijing Duan , Yunlong Wang , Zhiguang Liao , Changle Liu , Rong Yu

We address the concomitant metal-insulator transition (MIT) and antiferromagnetic ordering in the novel pyrochlore iridate Eu2Ir2O7 by combining x-ray absorption spectroscopy, x-ray and neutron diffractions and density functional theory…

Diverse interlayer tunability of physical properties of two-dimensional layers mostly lies in the covalent-like quasi-bonding that is significant in electronic structures but rather weak for energetics. Such characteristics result in…

Materials Science · Physics 2019-04-03 Peiheng Jiang , Cong Wang , Dachuan Chen , Zhicheng Zhong , Zhe Yuan , Zhong-Yi Lu , Wei Ji

The ability to control magnetic interactions at the nanoscale is crucial for the development of next-generation spintronic devices and functional magnetic materials. In this work, we investigate theoretically, by means of many-body…

Mesoscale and Nanoscale Physics · Physics 2025-09-18 Tomas T. Osterholt , D. O. Oriekhov , Lumen Eek , Cristiane Morais Smith , Rembert A. Duine

The isothermal magnetic entropy change has been obtained for the bilayer system that consists of $S_u$ and $S_l$ valued spins in each layer. The relation between the IMEC and the spin value as well as the value of exchange interaction…

Statistical Mechanics · Physics 2020-12-04 Ümit Akıncı , Yusuf Yüksel

The interplay of multiorbital physics and nonlocal self-energy effects is studied within an effective three-orbital model for the high-pressure normal state of superconducting bilayer nickelate La$_3$Ni$_2$O$_7$. The model is solved within…

Strongly Correlated Electrons · Physics 2026-04-10 Evgeny A. Stepanov , Steffen Bötzel , Ilya M. Eremin , Frank Lechermann

The possibility of controlling the interfacial properties of artificial oxide heterostructures is still attracting researchers in the field of materials engineering. Here, we used surface sensitive techniques and high-resolution…

Materials Science · Physics 2018-02-14 Santiago J. Carreira , Myriam H. Aguirre , Javier Briatico , Eugen Weschke , Laura B. Steren

Inelastic neutron scattering (INS) experiments have been performed on the Cu$_3$ triangular molecular nanomagnet using powder samples. In the medium resolution INS spectrum measured, there are two peaks at $\hbar\omega=0.5$ and 0.6 meV.…

Other Condensed Matter · Physics 2015-05-19 Kazuki Iida , Yiming Qiu , Taku J Sato

We report broadband spectroscopy and numerical analysis by which we explore propagating spin waves in a magnetic bilayer consisting of a 23 nm thick permalloy film deposited on 130 nm thick $Y_{3}Fe_{5}O_{12}$. In the bilayer, we observe a…

Applied Physics · Physics 2019-04-03 Kyongmo An , Vinayak Bhat , Michal Mruczkiewicz , Carsten Dubs , Dirk Grundler

We investigate magnetic properties of CrTe$_2$ within the density functional theory (DFT) approach in ferromagnetic phase and combination of DFT and dynamical mean field theory (DFT+DMFT) approach in paramagnetic phase. We show that few…

Strongly Correlated Electrons · Physics 2026-03-03 A. A. Katanin , E. M. Agapov

A spin Hamiltonian, which characterizes interatomic interactions between spin moments, is highly valuable in predicting and comprehending the magnetic properties of materials. A deeper understanding of the microscopic origin of magnetic…

Developing a low-energy model is essential for understanding unconventional superconductivity in bilayer nickelate La$_3$Ni$_2$O$_7$. Here, we analyze distinct low-energy scenarios of the normal state by downfolding the ab-initio determined…

Strongly Correlated Electrons · Physics 2025-05-19 Frank Lechermann , Steffen Bötzel , Ilya M. Eremin

We study how spin and orbital effects influence the capability of promoting Dzyaloshinskii-Moriya (DM) interaction by studying the two magnetic polar materials, Cu(IO3)2 (S = 1/2 with orbital contribution) and Mn(IO3)2 (S = 5/2 with…

We introduce a theoretical framework for computaions of anisotropic multipolar exchange interactions found in many spin--orbit coupled magnetic systems and propose a method to extract these coupling constants using a density functional…

Strongly Correlated Electrons · Physics 2014-08-01 Shu-Ting Pi , Ravindra Nanguneri , Sergey Savrasov

We demonstrate that low-lying triplon excitations in a bilayer Heisenberg antiferromagnet provide a promising avenue to realize magnetic analogs of twisted superfluid and supersolid phases that were recently reported for two-component…

Strongly Correlated Electrons · Physics 2021-09-08 Dhiman Bhowmick , Abhinava Chatterjee , Prasanta K. Panigrahi , Pinaki Sengupta

A novel general method of describing the spin-lattice interactions in magnetic solids was proposed in terms of first principles calculations. The spin exchange and Dzyaloshinskii-Moriya interactions as well as their derivatives with respect…

Strongly Correlated Electrons · Physics 2011-12-30 H. J. Xiang , E. J. Kan , Su-Huai Wei , M. -H. Whangbo , X. G. Gong

The multiple quantum (MQ) NMR dynamics in the system of equivalent spins with the dipolar ordered initial state is considered. The high symmetry of the MQ Hamiltonian is used in order to develop the analytical and numerical methods for an…

Chemical Physics · Physics 2015-05-27 S. I. Doronin , E. B. Fel'dman , A. I. Zenchuk

The discovery of $T_c\sim 80$~K superconductivity in pressurized La$_3$Ni$_2$O$_7$ has launched a new platform to study high-temperature superconductivity. Using non-perturbative dynamic cluster approximation quantum Monte Carlo…

Strongly Correlated Electrons · Physics 2025-06-10 Thomas A. Maier , Peter Doak , Ling-Fang Lin , Yang Zhang , Adriana Moreo , Elbio Dagotto
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