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Two-dimensional (2D) ferromagnetic materials are considered as promising candidates for the future generations of spintronic devices. Yet, 2D materials with intrinsic ferromagnetism are scarce. High-throughput first-principles simulations…

Materials Science · Physics 2022-11-15 R. Meng , L. M. C. Pereira , J. P. Locquet , V. V. Afanas'ev , G. Pourtois , M. Houssa

We report state-of-the-art atomistic simulations combined with high-fidelity conductance calculations to probe structure-conductance relationships in Au-benzenedithiolate(BDT)-Au junctions under elongation. Our results demonstrate that…

Mesoscale and Nanoscale Physics · Physics 2013-04-22 William R. French , Christopher R. Iacovella , Ivan Rungger , Amaury Melo Souza , Stefano Sanvito , Peter T. Cummings

The magnetic state and magnetic coupling of individual atoms in nanoscale structures relies on a delicate balance between different interactions with the atomic-scale surrounding. Using scanning tunneling microscopy, we resolve the…

Mesoscale and Nanoscale Physics · Physics 2015-06-12 T. R. Umbach , M. Bernien , C. F. Hermanns , A. Krüger , V. Sessi , I. Fernandez-Torrente , P. Stoll , J. I. Pascual , K. J. Franke , W. Kuch

Using first-principles calculations, we demonstrate that the magnetic exchange interaction and the magnetocrystalline anisotropy of biatomic Fe chains grown in the trenches of the 5x1 reconstructed Ir(001) surface depend sensitively on the…

Mesoscale and Nanoscale Physics · Physics 2015-05-14 Yuriy Mokrousov , Alexander Thiess , Stefan Heinze

High resolution inelastic neutron scattering is used to study excitations in the organometallic magnet DMACuCl$_3$. The correct magnetic Hamiltonian describing this material has been debated for many years. Combined with high field bulk…

Strongly Correlated Electrons · Physics 2009-11-13 M. B. Stone , W. Tian , M. D. Lumsden , G. E. Granroth , D. Mandrus , J. -H. Chung , N. Harrison , S. E. Nagler

The continuing miniaturization of microelectronics raises the prospect of nanometre-scale devices with mechanical and electrical properties that are qualitatively different from those at larger dimensions. The investigation of these…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 A. I. Yanson , G. Rubio Bollinger , H. E. van den Brom , N. Agrait , J. M. van Ruitenbeek

Altermagnet (AM) is a novel time reversal symmetry broken magnetic phase with $d$-wave order which has been experimentally realized recently. We discuss theoretical models of altermagnet based systems on lattice and in continuum. We show…

Mesoscale and Nanoscale Physics · Physics 2023-08-03 Sachchidanand Das , Dhavala Suri , Abhiram Soori

Iron, cobalt and nickel nanoparticles, grown in the gas phase, are known to arrange in chains and bracelet-like rings due to the long-range dipolar interaction between the ferromagnetic (or super-paramagnetic) particles. We investigate the…

Materials Science · Physics 2007-06-28 A. Hucht , S. Buschmann , P. Entel

The coexistence and competition of superconductivity and magnetism can lead to a variety of rich physics and technological applications. Recent discovery of atomic-layer superconductors and self-assembly of magnetic molecules on solid…

During the fracture of nanocontacts gold spontaneously forms freely suspended chains of atoms, which is not observed for the iso-electronic noble metals Ag and Cu. Au also differs from Ag and Cu in forming reconstructions at its low-index…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 R. H. M. Smit , C. Untiedt , A. I. Yanson , J. M. van Ruitenbeek

One-dimensional metal-organic chains often possess a complex magnetic structure susceptible to be modified by a alteration of their chemical composition. The possibility to tune their magnetic properties provides an interesting playground…

We report the fabrication of artificial unidimensional crystals exhibiting an effective bulk second-order nonlinearity. The crystals are created by cycling atomic layer deposition of three dielectric materials such that the resulting…

We theoretically investigate the flow of the atomic excitations in a driven chiral-coupled atomic chain with nonreciprocal decay channels. This one-dimensional system allows infinite-range dipole-dipole interaction, and enables directional…

Quantum Physics · Physics 2019-03-06 H. H. Jen

The interaction of standard model's particles with the axionic Dark Matter field may generate oscillating nuclear electric dipole moments (EDMs), oscillating nuclear Schiff moments and oscillating nuclear magnetic quadrupole moments (MQMs)…

High Energy Physics - Phenomenology · Physics 2020-04-29 V. V. Flambaum , H. B. Tran Tan , D. Budker , A. Wickenbrock

The interaction between localized magnetic moments and the electrons of a one-dimensional conductor can lead to an ordered phase in which the magnetic moments and the electrons are tightly bound to each other. We show here that this occurs…

Mesoscale and Nanoscale Physics · Physics 2009-12-18 Bernd Braunecker , Pascal Simon , Daniel Loss

We present a survey of the structural and magnetic properties of submonolayer transition metal dioxides on the (001) surfaces of the heavy face-centered cubic (fcc) noble metals Ir and Pt performed by spin-averaged scanning tunneling…

Materials Science · Physics 2019-10-08 M. Schmitt , C. H. Park , P. Weber , A. Jäger , J. Kemmer , M. Vogt , M. Bode

For the first time, we report the formation of pentagonal atomic chains during tensile deformation of ultra thin BCC Fe nanowires. Extensive molecular dynamics simulations have been performed on $<$100$>$/{110} BCC Fe nanowires with…

Mesoscale and Nanoscale Physics · Physics 2016-12-20 G. Sainath , B. K. Choudhary

Magnetization curves of two rectangular metal-organic coordination networks formed by the organic ligand TCNQ (7,7,8,8-tetracyanoquinodimethane) and two different (Mn and Ni) 3d transition metal atoms [M(3d)] show marked differences that…

A mixture of light and heavy spin-polarized fermionic atoms in an optical lattice is considered. Tunneling of the heavy atoms is neglected such that they are only subject to thermal fluctuations. This results in a complex interplay between…

Disordered Systems and Neural Networks · Physics 2009-11-11 K. Ziegler

Driven by applications in information technology, the search for new materials with stable, long-range magnetic ordering continues. Metalorganic magnets, involving the coordination of metal atoms with specific organic ligands, are a focus…