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Layered topologically non-trivial and trivial semimetals with AFM-type ordering of magnetic sublattice are known to exhibit a negative magnetoresistance that is well correlated with AFM magnetization changes in a magnetic field. This effect…

The electromagnetic form factors provide important hints for the internal structure of the nucleon and continue to be of major interest for experimentalists. For an intermediate range of momentum transfers the form factors can be calculated…

Spin is a fundamental property of any many-electron system. The ability of density functional theory to accurately predict the physical properties of a system, while varying its spin, is crucial for describing magnetic materials and…

化学物理 · 物理学 2024-11-05 Alon Hayman , Eli Kraisler , Tamar Stein

The phenomenology of exchange bias effects observed in structurally single-phase alloys and compounds but composed of a variety of coexisting magnetic phases such as ferromagnetic, antiferromagnetic, ferrimagnetic, spin-glass, cluster-glass…

材料科学 · 物理学 2011-07-12 S Giri , M Patra , S Majumdar

We investigated insulating Cu$_2$N islands grown on Cu(100) by means of combined scanning tunneling microscopy and atomic force microscopy with two vastly different tips: a bare metal tip and a CO-terminated tip. We use scanning tunneling…

介观与纳米尺度物理 · 物理学 2015-06-18 Maximilian Schneiderbauer , Matthias Emmrich , Alfred J. Weymouth , Franz J. Giessibl

This chapter takes a microscopic view of quantum tunneling of magnetization (QTM) in single-molecule magnets (SMMs), focusing on the interplay between exchange and anisotropy. Careful consideration is given to the relationship between…

介观与纳米尺度物理 · 物理学 2013-03-04 Junjie Liu , Enrique del Barco , Stephen Hill

We present an atomic, molecular, and optical physics based method for the purpose of search for axial-vector mediated dipole-dipole interaction between electrons. In our scheme, applying a static magnetic field and a pump beam and a probe…

量子物理 · 物理学 2019-10-28 Lei Chen , Jian Liu , Ka Di Zhu

Two-dimensional (2D) magnets offer a rich platform for exploring emergent spin phenomena due to their unique and diverse magnetic properties. Beyond intrinsic magnetism, external manipulation$\unicode{x2013}$such as defect engineering,…

材料科学 · 物理学 2026-03-19 Johanna P. Carbone , Jakob Baumsteiger , Cesare Franchini

Atomic Force Microscope images of a crack intersecting the free surface of a glass specimen are taken at different stages of subcritical propagation. From the analysis of image pairs, it is shown that a novel Integrated Digital Image…

经典物理 · 物理学 2015-05-18 Kun Han , Matteo Ciccotti , Stéphane Roux

Nuclear potentials are known to exhibit a considerable degree of scheme dependence. For one- and two-pion exchange nucleon-nucleon (NN) potentials, unitary ambiguities start showing up at the level of the leading relativistic corrections to…

核理论 · 物理学 2025-05-06 Victor Springer , Hermann Krebs , Evgeny Epelbaum

Altermagnets host momentum-selective spin splitting and chiral-split magnonic excitations despite vanishing net magnetization, enabling spin transport without ferromagnetism. In rutile structures, establishing altermagnetism…

A theoretical study of spin dynamics in non-relativistic particle beams with interacting angular momenta traversing static, spatially varying magnetic fields is presented. The computational framework evaluates sinusoidal magnetic field…

We propose a new universal mechanism that makes it possible to drive an individual atomic spin using a spin polarized scanning tunnel microscope (STM) with an oscillating electric signal. We show that the combination of the distance…

介观与纳米尺度物理 · 物理学 2017-11-15 J. L. Lado , A. Ferron , J. Fernandez-Rossier

Manipulation of metal nanoparticles using atomic force microscope is a promising new technique for probing tribological properties at the nanoscale. In spite of some advancements in experimental investigations, there is no unambiguous…

介观与纳米尺度物理 · 物理学 2010-11-25 Alexei V. Khomenko , Nikolay V. Prodanov

The possible existence of short-range forces between unpolarized and polarized spin-1/2 particles has attracted the attention of physicists for decades. These forces are predicted in various theories and provide a possible new source for…

The effect of electron-nuclear spin interactions on qubit operations is investigated for a qubit represented by the spin of an electron localized in a self-assembled quantum dot. The localized electron wave function is evaluated within the…

量子物理 · 物理学 2009-11-10 Seungwon Lee , Paul von Allmen , Fabiano Oyafuso , Gerhard Klimeck , K. Birgitta Whaley

We present a theory for the estimation of a scalar or a vector magnetic field by its influence on an ensemble of trapped spin polarized atoms. The atoms interact off-resonantly with a continuous laser field, and the measurement of the…

量子物理 · 物理学 2009-11-10 Vivi Petersen , Lars Bojer Madsen , Klaus Molmer

The total energy of the transverse spin-spiral wave as a function of the wave vector for all 3$d$ transition metal atomic chains has been calculated within {\it ab initio} density functional theory with generalized gradient approximation.…

材料科学 · 物理学 2015-05-27 J. C. Tung , G. Y. Guo

We describe a general technique that allows to induce and control strong interaction between spin states of neighboring atoms in an optical lattice. We show that the properties of spin exchange interactions, such as magnitude, sign, and…

软凝聚态物质 · 物理学 2009-11-07 L. -M. Duan , E. Demler , M. D. Lukin

Exchange bias is a horizontal shift of the hysteresis loop observed for a ferromagnetic layer in contact with an antiferromagnetic layer. Since exchange bias is related to the spin structure of the antiferromagnet, for its fundamental…

材料科学 · 物理学 2009-11-07 U. Nowak , A. Misra , K. D. Usadel