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Stabilization of unusual spin-orbit driven magnetic orderings are achieved for chains of Mn atoms deposited on a W(110) substrate. First-principles electronic structure calculations show that the ground state spin configuration is…

Based on Monte-Carlo simulations, the stable magnetization configurations of an antiferromagnet on a quasiperiodic tiling are derived theoretically. The exchange coupling is assumed to decrease exponentially with the distance between…

Disordered Systems and Neural Networks · Physics 2007-05-23 E. Y. Vedmedenko , U. Grimm , R. Wiesendanger

We investigated the electronic and magnetic properties of the pyrochlore oxide Cd$_2$Os$_2$O$_7$ using the density-functional theory plus on-site repulsion ($U$) method, and depict the ground-state phase diagram with respect to $U$. We…

Strongly Correlated Electrons · Physics 2012-06-15 Hiroshi Shinaoka , Takashi Miyake , Shoji Ishibashi

By systematic first-principles calculations, we study the electronic structure and magnetic property of SrCrO$_3$. Our results suggest that SrCrO$_3$ is a weakly correlated antiferromagnetic (AF) metal, a very rare situation in…

Materials Science · Physics 2010-07-20 Guangtao Wang , Zhi Li , C. Q. Jin , Zhong Fang

Sr$_{3}$ZnIrO$_{6}$ is an effective spin one-half Mott insulating iridate belonging to a family of magnets which includes a number of quasi-one dimensional systems as well as materials exhibiting three dimensional order. Here we present the…

Strongly Correlated Electrons · Physics 2020-05-19 P. A. McClarty , A. D. Hillier , D. T. Adroja D. D. Khalyavin , S. Rayaprol , P. Manuel , W. Kockelmann , E. V. Sampathkumaran

Mn5Ge3 thin films epitaxially grown on Ge(111) exhibit metallic conductivity and strong ferromagnetism up to about 300 K. Recent experiments suggest a non-collinear spin structure. In order to gain deep insights into the magnetic structure…

Materials Science · Physics 2015-06-25 A. Stroppa , M. Peressi

The entropy stabilized oxide Mg$_{0.2}$Co$_{0.2}$Ni$_{0.2}$Cu$_{0.2}$Zn$_{0.2}$O exhibits antiferromagnetic order and magnetic excitations, as revealed by recent neutron scattering experiments. This observation raises the question of the…

Disordered Systems and Neural Networks · Physics 2021-09-29 Tom Berlijn , Gonzalo Alvarez , David S. Parker , Raphaël P. Hermann , Randy S. Fishman

Understanding the magnetic properties of atomic chains on superconductors is an essential cornerstone on the road towards controlling and constructing topological electronic matter. Yet, even in simple models, the magnetic ground states…

Superconductivity · Physics 2022-04-27 Jannis Neuhaus-Steinmetz , Elena Y. Vedmedenko , Thore Posske , Roland Wiesendanger

We uncover four new spin-charge ordered ground states in the strong coupling limit of the Kondo lattice model on triangular geometry. Two of the states at one-third electronic filling ($n=1/3$) consist of decorated ferromagnetic chains…

Strongly Correlated Electrons · Physics 2015-06-23 Sahinur Reja , Rajyavardhan Ray , Jeroen van den Brink , Sanjeev Kumar

We determined the magnetic structure of CuCr$_2$O$_4$ using neutron diffraction and irreducible representation analysis. The measurements identified a new phase between 155 K and 125 K as nearly collinear magnetic ordering in the Cr…

Strongly Correlated Electrons · Physics 2018-03-20 K. Tomiyasu , S. Lee , H. Ishibashi , Y. Takahashi , T. Kawamata , Y. Koike , T. Nojima , S. Torii , T. Kamiyama

Large spin systems can exhibit unconventional types of magnetic ordering different from the ferromagnetic or N\'eel-like antiferromagnetic order commonly found in spin 1/2 systems. Spin-nematic phases, for instance, do not break…

We clarify the macroscopic symmetry and microscopic model-parameter conditions for emergence of spin-split electronic band structure in collinear antiferromagnets without atomic spin-orbit coupling. By using the microscopic multipole…

Strongly Correlated Electrons · Physics 2019-11-12 Satoru Hayami , Yuki Yanagi , Hiroaki Kusunose

An antiferromagnet is a promising material for spin-orbit torque generation. Earlier studies of the spin-orbit torque in an antiferromagnet are limited to collinear spin configurations. We calculate the spin-orbit torque in an…

Mesoscale and Nanoscale Physics · Physics 2018-04-04 Suik Cheon , Hyun-Woo Lee

A combined experimental, using X-ray Magnetic Circular Dichroism and theoretical investigation, using full-potential Korringa-Kohn-Rostoker (KKR) Green function method, is carried out to study the spin structure of small magnetic Cr…

We present a thorough theoretical assessment of the stability of non-collinear spin arrangements in small palladium clusters. We generally find that ferromagnetic order is always preferred, but that antiferromagnetic and non-collinear…

Materials Science · Physics 2009-11-13 F. Aguilera-Granja , J. Ferrer , A. Vega

We investigate noncollinear effects in antiferromagnetically coupled clusters using the general, rotationally invariant form of local spin-density theory. The coupling to the electronic degrees of freedom is treated with relativistic…

Atomic and Molecular Clusters · Physics 2009-10-31 C. Kohl , G. F. Bertsch

NMR studies have been carried out on a single crystal sample of TbBaCo2O5.5 with the oxygen-deficient perovskite structure. We have also carried out neutron diffraction studies and added new results to our previously published data. By…

Strongly Correlated Electrons · Physics 2009-11-11 Minoru Soda , Yukio Yasui , Yoshiaki Kobayashi , Toshiaki Fujita , Masatoshi Sato , Kazuhisa Kakurai

We present a systematic high-throughput density-functional-theory investigation of the structural and magnetic stability of 312 substitutional compounds in the magnetic kagome AT6X6 family. Our screening confirms the stability of many…

Materials Science · Physics 2026-05-05 Shiya Chen , Zhen Zhang , Vladimir Antropov , Yang Sun

A description of non-collinear magnetism in the framework of spin-density functional theory is presented for the exact exchange energy functional which depends explicitly on two-component spinor orbitals. The equations for the effective…

It was recently discovered that, depending on their symmetries, collinear antiferromagnets can actually break the spin degeneracy in momentum space, even in the absence of spin-orbit coupling. Such systems, recently dubbed altermagnets, are…

Materials Science · Physics 2024-03-20 Yaqian Guo , Hui Liu , Oleg Janson , Ion Cosma Fulga , Jeroen van den Brink , Jorge I. Facio
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