中文
相关论文

相关论文: Assessing interface coupling in exchange-biased sy…

200 篇论文

Numerical time evolution of transport states using time dependent Density Matrix Renormalization Group (td-DMRG) methods has turned out to be a powerful tool to calculate the linear and finite bias conductance of interacting impurity…

强关联电子 · 物理学 2010-04-26 Alexander Branschädel , Guenter Schneider , Peter Schmitteckert

Second harmonic generation magneto-optic Kerr effect (SHMOKE) experiments, sensitive to buried interfaces, were performed on a polycrystalline NiFe/FeMn bilayer in which areas with different exchange bias fields were prepared using 5 KeV He…

材料科学 · 物理学 2018-07-26 L. Sampaio , A. Mougin , J. Ferre , P. Georges , A. Brun , H. Bernas , S. Poppe , T. Mewes , J. Fassbender , B. Hillebrands

We introduce a random interaction matrix model (RIMM) for finite-size strongly interacting fermionic systems whose single-particle dynamics is chaotic. The model is applied to Coulomb blockade quantum dots with irregular shape to describe…

介观与纳米尺度物理 · 物理学 2009-10-31 Y. Alhassid , Ph. Jacquod , A. Wobst

The asymmetric magnetization reversal is studied in a single exchange-biased microbar of 1.5 x 13 micrometer with anisotropic magnetoresistance and magnetic force microscopy. The particle has a moment of less than 10^-9 emu and is not…

材料科学 · 物理学 2009-11-13 T. Gredig , M. Tondra

As nanomagnetic devices scale to smaller sizes, spin-orbit coupling due to the broken structural inversion symmetry at interfaces becomes increasingly important. Here we study interfacial spin-orbit coupling effects in magnetic bilayers…

介观与纳米尺度物理 · 物理学 2013-11-26 Kyoung-Whan Kim , Hyun-Woo Lee , Kyung-Jin Lee , M. D. Stiles

RT\textsubscript{12} materials continue to attract attention due to their potential use as ``rare-earth-lean'' permanent magnets, but converting their promising intrinsic properties into practical high performance remains an elusive goal.…

材料科学 · 物理学 2025-08-12 Christopher E Patrick

We propose a mechanism to explain the phenomenon of positive exchange bias on magnetic bilayered systems. The mechanism is based on the formation of a domain wall at a disordered interface during field cooling (FC) which induces a symmetry…

介观与纳米尺度物理 · 物理学 2013-07-26 Orlando V. Billoni , Francisco A. Tamarit , Sergio A. Cannas

We investigate the interacting domain-wall model derived from the triangular-lattice antiferromagnetic Ising model with two next-nearest-neighbor interactions. The system has commensurate phases with a domain-wall density $q=2/3$ as well as…

凝聚态物理 · 物理学 2009-10-22 Jae Dong Noh , Doochul Kim

Interfacial spin-flip scattering plays an important role in magnetoelectronic devices. Spin loss at metallic interfaces is usually quantified by matching the magnetoresistance data for multilayers to the Valet-Fert model, while treating…

材料科学 · 物理学 2016-11-15 K. D. Belashchenko , Alexey A. Kovalev , M. van Schilfgaarde

Different models have been used to evaluate the interfacial Dzyaloshinskii-Moriya interaction (DMI) from the asymmetric bubble expansion method using magneto-optics. Here we investigate the most promising candidates over a range of…

We investigate the role of long-range Coulomb interactions in $M$-valley moir\'es using the self-consistent Hartree-Fock approximation. This platform was recently proposed [Nature 643, 376 (2025) and arXiv:2411.18828 (2024)] as a new class…

介观与纳米尺度物理 · 物理学 2025-09-24 Christophe De Beule , Liangtao Peng , E. J. Mele , Shaffique Adam

We study the thermodynamic and magnetic properties of an Ising bilayer ferrimagnet. The system is composed of two interacting non-equivalent planes in which the intralayer couplings are ferromagnetic while the interlayer interactions are…

统计力学 · 物理学 2017-09-11 Ian Jordy Lopez Diaz , Nilton da Silva Branco

The reflection coefficient of bulk spin waves from multilayer ferromagnetic structure with periodically modulated parameters of exchange interaction, uniaxial and rhombic magnetic anisotropy and saturation magnetization is calculated with a…

材料科学 · 物理学 2009-01-15 Sergey A Reshetnyak , Tat'yana A Homenko

The dimerized quantum magnet BaCuSi$_2$O$_6$ was proposed as an example of "dimensional reduction" arising near the magnetic-field-induced quantum critical point (QCP) due to perfect geometrical frustration of its inter-bilayer…

We present a controlled method for computing the exchange coupling in correlated one-dimensional electron systems based on the relation between the exchange constant and the pair-correlation function of spinless electrons. This relation is…

强关联电子 · 物理学 2007-05-23 Michael M. Fogler , Eugene Pivovarov

We study the magnetic properties of cylindrical ferromagnetic core - antiferromagnetic shell nanowires using Monte Carlo simulations and a classical Heisenberg Hamiltonian in order to elucidate the impact of the oxidized shell on the…

介观与纳米尺度物理 · 物理学 2017-06-26 A. Patsopoulos , D. Kechrakos

We investigate the properties of the electron spin-transmission through an Aharonov-Bohm interferometer with an embedded multilevel quantum dot containing magnetic impurities. A suitable formalism is developed. The amplitude and the phase…

介观与纳米尺度物理 · 物理学 2007-05-23 A. Aldea , M. Tolea , J. Zittartz

The dimeric form of the single-molecule magnet [Mn$_4$O$_3$Cl$_4$(O$_2$CEt)$_3$(py)$_3$]$_2$ recently revealed interesting phenomena: no quantum tunneling at zero field and tunneling before magnetic field reversal. This is attributed to…

We examine the anomalous inverse spin switch behavior in La$_{0.7}$Ca$_{0.3}$MnO$_3$ (LCMO)/YBa$_2$Cu$_3$O$_{7-\delta}$ (YBCO)/LCMO trilayers by combined transport studies and polarized neutron reflectometry. Measuring magnetization…

We present an extension of the previously proposed mean-field renormalization method to model Hamiltonians which are characterized by more than just one type of interaction. The method rests on scaling assumptions about the magnetization of…

凝聚态物理 · 物理学 2016-08-31 C. N. Likos , A. Maritan