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Understanding the magnetization switching process in ferromagnetic thin films is essential for many technological applications. We investigate the effects of periodic driving via magnetic fields on a macrospin system under explicit…

Materials Science · Physics 2022-08-16 Michael Maihöfer , Johannes Reiff , Jörg Main , Rigoberto Hernandez

We investigate the metal-insulator Mott transition in a generalized version of the periodic Anderson model, in which a band of itinerant electrons is hybridrized with a narrow and strongly correlated band. Using dynamical mean-field theory,…

Strongly Correlated Electrons · Physics 2017-07-18 Adriano Amaricci , Luca de' Medici , Massimo Capone

Magnetic state is a partial ordered state if only part of the electrons in the system give contribution to the magnetic order. We study Heisenberg model of two sublattice spin system, on the body-centered cubic lattice, with…

Strongly Correlated Electrons · Physics 2024-09-20 N. Karchev

Light-matter interaction allows to achieve non-equilibrium states that are otherwise inaccessible. Motivated by recent experiments that report ferroelectricity -- and even multiferroicity -- in the prototypical diamagnetic band insulator…

Materials Science · Physics 2026-02-25 Andri Darmawan , Markus E. Gruner , Rossitza Pentcheva

We analyze nonlinear magneto-optical rotation (NMOR) in rubidium vapor subjected to continuously-scanned magnetic field. By varying magnetic-field sweep rate, a transition from traditionally-observed dispersive-like NMOR signals (low sweep…

Atomic Physics · Physics 2018-04-25 R. S. Grewal , A. Rybak , M. Florkowski , S. Pustelny

We demonstrate magnetization switching in out-of-plane magnetized Ta\CoFeB\MgO nanowires by current pulse injection along the nanowires, both with and without a constant and uniform magnetic field collinear to the current direction. We…

Mesoscale and Nanoscale Physics · Physics 2015-06-19 R. Lo Conte , A. Hrabec , A. P. Mihai , T. Schulz , S. -J. Noh , C. H. Marrows , T. A. Moore , M. Kläui

Polaron formation following optical absorption is a key process that defines the photophysical properties of many semiconducting transition metal oxides, which comprise an important class of materials with potential optoelectronic and…

Materials Science · Physics 2022-11-11 Jacob L. Shelton , Kathryn E. Knowles

The absence of net magnetization, which forbids any stray magnetic fields, is one of the greatest advantages of antiferromagnets in device applications. In conventional antiferromagnets, however, spin current cannot be extracted without the…

Mesoscale and Nanoscale Physics · Physics 2019-03-05 Nobuyuki Okuma

We report on a phenomenon of plasmonic dichroism observed in magnetic materials with the transverse magnetization under the excitation of the surface plasmon polariton waves. The effect originates from the interplay of the two…

Resonant interaction between excitonic transitions of molecules and localized electromagnetic field allows the formation of hybrid light-matter polaritonic states. This hybridization of the light and the matter states has been shown to be…

Mesoscale and Nanoscale Physics · Physics 2020-09-30 Dmitriy Dovzhenko , Maksim Lednev , Konstantin Mochalov , Ivan Vaskan , Yury Rakovich , Igor Nabiev

Recent neutron scattering [1,2], and optical measurements [3,4] have detected evidence in underdoped cuprate superconductors for a phase transition near the pseudogap onset temperature T* to a time reversal-breaking state. The neutron…

Strongly Correlated Electrons · Physics 2015-05-27 J. Orenstein

Spin angular momentum transfer in magnetic bilayers offers the possibility of ultrafast and low-loss operation for next-generation spintronic devices. We report the field- and temperature- dependent measurements on the magnetization…

Materials Science · Physics 2023-01-03 X. Liu , P. Liu , H. C. Yuan , J. Y. Shi , H. L. Wang , S. H. Nie , F. Jin , Z. Zheng , X. Z. Yu , J. H. Zhao , H. B. Zhao , G. Lüpke

The metal-insulator transition in correlated electron systems, where electron states transform from itinerant to localized, has been one of the central themes of condensed matter physics for more than half a century. The persistence of this…

Strongly Correlated Electrons · Physics 2009-03-11 Jan Kunes , Alexey V. Lukoyanov , Vladimir I. Anisimov , Richard T. Scalettar , Warren E. Pickett

RuO$_2$, one of the most widely studied transition metal oxides, was recently predicted to host a novel form of collinear magnetic order referred to as altermagnetism. In this study we combine experiment (reflectance, transmittance,…

Materials Science · Physics 2025-09-03 Darshana Wickramaratne , Marc Currie , Shelby S. Fields , Cory D. Cress , Steven P. Bennett

By moving individual Fe-Porphyrin-based molecules with the tip of Scanning Tunneling Microscope in the vicinity of a Br-atom containing elbow of the herringbone-reconstructed Au(111), we reversibly and continuously control their magnetic…

Mesoscale and Nanoscale Physics · Physics 2023-05-10 Yingzheng Gao , Sergio Vlaic , Tommaso Gorni , Luca de' Medici , Sylvain Clair , Dimitri Roditchev , Stéphane Pons

Photo-electric absorption of blackbody photons is an important process which limits the acceleration of ions under the space-charge limited flow boundary condition at the polar caps of pulsars with positive corotational charge density.…

High Energy Astrophysical Phenomena · Physics 2015-05-30 P. B. Jones

We consider photo ionization of an atom which, due to passing through a diffraction grating, is prepared in a multi-site state possessing a periodic space structure with alternating maxima and minima. It has been found that this process…

Atomic Physics · Physics 2020-08-07 S. F. Zhang , B. Najjari , X. Ma , A. B. Voitkiv

Based on a two-dimensional extended Hubbard model with electron-phonon interaction, we have studied the effect of polaron formation on the charge ordering (CO) transition. It is found that for fully ferromagnetically ordered spins the CO…

Strongly Correlated Electrons · Physics 2009-10-31 Qingshan Yuan , Peter Thalmeier

Metamaterials made of periodic collections of dielectric nanorods are considered theoretically. When quantum resonators are embedded within the nanorods, one obtains a quantum metamaterial, whose electromagnetic properties depend upon the…

Mesoscale and Nanoscale Physics · Physics 2017-10-11 Didier Felbacq , Emmanuel Rousseu

Electric field control of the exchange bias effect across ferromagnet/antiferromagnet (FM/AF) interfaces has offered exciting potentials for low-energy-dissipation spintronics. In particular, the solid state magneto-ionic means is highly…

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