English
Related papers

Related papers: Atomic-scale observation of $d$-$\pi$-$d$ spin cou…

200 papers

Magnetic anisotropy phenomena in bimetallic antiferromagnets Mn$_2$Au and MnIr are studied by first-principles density functional theory calculations. We find strong and lattice-parameter dependent magnetic anisotropies of the ground state…

High spin systems, like those that incorporate rare-earth $4f$ elements (REEs), are increasingly relevant in many fields. Although research in such systems is sparse, the large Hilbert spaces they occupy are promising for many applications.…

Mesoscale and Nanoscale Physics · Physics 2023-08-16 David W. Facemyer , Naveen K. Dandu , Alex Taekyung Lee , Vijay R. Singh , Anh T. Ngo , Sergio E. Ulloa

Understanding the nature of magnetic interactions in ultra-small magnetic ensembles and their intrinsic properties is vital to uncover the dynamics therein. In this study we reveal the spin dynamics of hexagonally arranged Fe atoms on…

Mesoscale and Nanoscale Physics · Physics 2018-08-21 Tamene R. Dasa , Valeri S. Stepanyuk

Here we have performed detailed first principles calculations for the electronic structure and magnetic properties of Ba$_6$Cr$_2$S$_{10}$ to study the origin of the anti-ferromagnetic exchange interaction between spins on Cr ions for the…

Strongly Correlated Electrons · Physics 2023-08-16 Jianhua Zhu , Jianfeng Zhang , Yilin Zhang , Devashibhai Adroja , Huancheng Yang , Xiancheng Wang , Changqing Jin , Ji Chen , Wei Wu

Magnetoelasticity plays a crucial role in numerous magnetic phenomena, including magnetocalorics, magnon excitation via acoustic waves, and ultrafast demagnetization/Einstein-de Haas effect. Despite a long-standing discussion on…

Strong electron correlations lie at the origin of transformative phenomena such as colossal magneto-resistance and high-temperature superconductivity. Already near room temperature, doped copper oxide materials display remarkable features…

Monosilicides of 3d-metals frequently show a chiral magnetic ordering with the absolute configuration defined by the chirality of the crystal structure and the sign of the Dzyaloshinskii-Moriya interaction (DMI). Structural and magnetic…

The composition-dependent behavior of the Dzyaloshinskii-Moriya interaction (DMI), the spin-orbit torque (SOT), as well as anomalous and spin Hall conductivities of Mn$_{1-x}$Fe$_x$Ge alloys have been investigated by first-principles…

Materials Science · Physics 2018-01-10 S. Mankovsky , S. Wimmer , S. Polesya , H. Ebert

We explore the properties of 3-atom complexes of alkali-metal diatomic molecules with alkali-metal atoms, which may be formed in ultracold collisions. We estimate the densities of vibrational states at the energy of atom-diatom collisions,…

Atomic Physics · Physics 2022-01-12 Matthew D. Frye , Jeremy M. Hutson

A ferrimagnetic spin model composed of $S=1/2$ spin-dimers and $S=5/2$ spin-chains is studied by combining the bond-operator representation (for $S=1/2$ spin-dimers) and Holstein-Primakoff transformation (for $S=5/2$ spins). A finite…

Strongly Correlated Electrons · Physics 2015-05-14 Bao Xu , Han-Ting Wang , Yupeng Wang

We review recent theoretical developments about the role of spins, electron-electron interactions, and spin-orbit coupling in metal nanoparticles and semiconductor quantum dots. For a closed system, in the absence of spin-orbit coupling or…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Yuval Oreg , P. W. Brouwer , X. Waintal , Bertrand I. Halperin

A microscopic magnetic model for the spin-1/2 Heisenberg chain compound CuSe2O5 is developed based on the results of a joint experimental and theoretical study. Magnetic susceptibility and specific heat data give evidence for quasi-1D…

Strongly Correlated Electrons · Physics 2009-11-20 O. Janson , W. Schnelle , M. Schmidt , Yu. Prots , S. -L. Drechsler , S. K. Filatov , H. Rosner

We propose an experiment, which would allow to pinpoint the role of spin-orbit coupling in the metal-nonmetal transition observed in a number of two-dimensional systems at low densities. Namely, we demonstrate that in a parallel magnetic…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 Guang-Hong Chen , M. E. Raikh , Yong-Shi Wu

Metallorganic molecules have been proposed as excellent spin filters in molecular spintronics because of the large spin-polarization of their electronic structure. However, most of the studies involving spin transport, have disregarded…

Mesoscale and Nanoscale Physics · Physics 2015-04-29 P. N. Abufager , R. Robles , N. Lorente

We present results for the electronic and magnetic structure of Mn and Fe clusters on Nb(110) surface, focusing on building blocks of atomic chains as possible realizations of topological superconductivity. The magnetic ground states of the…

Mesoscale and Nanoscale Physics · Physics 2021-09-29 András Lászlóffy , Krisztián Palotás , Levente Rózsa , László Szunyogh

The transferred hyperfine interaction between nuclear and electron spins in an heavy fermion material depends on the hybridization between the $f$-electron orbitals and those surrounding a distant nucleus. In CeMIn$_5$ (M=Rh, Ir, Co), both…

Strongly Correlated Electrons · Physics 2021-08-04 P. Menegasso , J. C. Souza , I. Vinograd , Z. Wang , S. P. Edwards , P. G. Pagliuso , N. J. Curro , R. R. Urbano

Besides active, functional molecular building blocks such as diodes or switches, passive components as, e.g., molecular wires, are required to realize molecular-scale electronics. Incorporating metal centers in the molecular backbone…

Among spin-crossover complexes, Fe-porphyrin (FeP) stands out for molecular spintronic applications: An intricate, yet favourable balance between ligand fields, charge transfer, and the Coulomb interaction makes FeP highly manipulable,…

Strongly Correlated Electrons · Physics 2021-09-03 Sumanta Bhandary , Jan M. Tomczak , Angelo Valli

In a magnetic multilayer, the spin transfer between localized magnetization dynamics and itinerant conduction spin arises from the interaction between a normal metal and an adjacent ferromagnetic layer. The spin-mixing conductance then…

Mesoscale and Nanoscale Physics · Physics 2022-07-04 Adam B. Cahaya , Rico M. Sitorus , Anugrah Azhar , Ahmad R. T. Nugraha , Muhammad Aziz Majidi

Transition metal compounds with the $(t_{2g})^4$ electronic configuration are expected to be nonmagnetic atomic singlets both in the weakly interacting regime due to spin-orbit coupling, as well as in the Coulomb dominated regime with…

Strongly Correlated Electrons · Physics 2017-01-16 Christopher Svoboda , Mohit Randeria , Nandini Trivedi