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We study nonlinear response of a ferrimagnetic sphere resonator (FSR) strongly coupled to a microwave loop gap resonator (LGR). The measured response in the regime of weak nonlinearity allows the extraction of the FSR Kerr coefficient and…

Strongly Correlated Electrons · Physics 2021-08-25 Cijy Mathai , Oleg Shtempluck , Eyal Buks

Ferromagnetic resonance is used to reveal features of the buried electronic band structure at interfaces between ferromagnetic metals and topological insulators. By monitoring the evolution of magnetic damping, the application of this…

We report on a first principles study of anti-ferromagnetic resonance (AFMR) phenomena in metallic systems [MnX (X=Ir,Pt,Pd,Rh) and FeRh] under an external electric field. We demonstrate that the AFMR linewidth can be separated into a…

Mesoscale and Nanoscale Physics · Physics 2019-01-02 Farzad Mahfouzi , Nicholas Kioussis

Control of the spin wave dynamics in nanomagnetic elements is very important for the realization of a broad range of novel magnonic devices. Here we study experimentally the spin wave resonance in thick ferromagnetic rings (100 nm) using…

Applied Physics · Physics 2021-12-28 Xue Zhou , Elena Tartakovskaya , Gleb Kakazei , Adekunle Adeyeye

The spectral signatures of magnetic skyrmions under microwave field excitation are of fundamental interest and can be an asset for high frequency applications. These topological solitons can be tailored in multilayered thin films, but the…

The electron spin in a semiconductor quantum dot can be coherently controlled by an external electric field, an effect called electric-dipole spin resonance (EDSR). Several mechanisms can give rise to the EDSR effect, among which there is a…

Mesoscale and Nanoscale Physics · Physics 2016-04-15 Rui Li

The dc voltage generated under ferromagnetic resonance has been studied in bilayer structures based on manganite thin epitaxial films La0.67Sr0.33MnO3 (LSMO) and non-magnetic metals (Au, Pt, and SrRuO3) in the temperature range up to the…

Mesoscale and Nanoscale Physics · Physics 2015-11-30 V. A. Atsarkin , B. V. Sorokin , I. V. Borisenko , V. V. Demidov , G. A. Ovsyannikov

We demonstrate that the feedback effect from bosonic excitations on fermions, which in the past allowed one to verify the phononic mechanism of a conventional, $s-$wave superconductivity, may also allow one to experimentally detect the…

Superconductivity · Physics 2016-08-31 Ar. Abanov , Andrey V. Chubukov , Jörg Schmalian

The spin-fluctuation based pairing mechanism has proven successful in explaining the pairing symmetries due to Fermi surface nesting of both cuprates and iron-based materials. In this work, we study signatures of a spin-fluctuation mediated…

Superconductivity · Physics 2013-04-19 A. T. Roemer , S. Graser , P. J. Hirschfeld , B. M. Andersen

In-situ, device level measurement of thermal mag-noise spectral linewidths in 60nm diameter CPP-GMR spin-valve stacks of IrMn/ref/Cu/free, with reference and free layer of similar CoFe/CoFeGe alloy, are used to simultaneously determine the…

Materials Science · Physics 2013-05-29 Neil Smith , Matthew J. Carey , Jeffrey R. Childress

The influence of substitutional disorder on the magnetic properties of diluted Heisenberg spin systems is studied with regard to the magnetic stability of ferromagnetic diluted semiconductors (DMS). The equation of motion for the magnon…

Disordered Systems and Neural Networks · Physics 2007-05-23 S. Hilbert , W. Nolting

Perpendicular magnetic anisotropy ferromagnetic/ superconducting (FM/SC) bilayers with a labyrinth domain structure are used to study nucleation of superconductivity on a fractal network, tunable through magnetic history. As clusters of…

The magnetic damping constant is a critical parameter for magnetization dynamics and the efficiency of memory devices and magnon transport. Therefore, its manipulation by electric fields is crucial in spintronics. Here, we theoretically…

Mesoscale and Nanoscale Physics · Physics 2021-06-23 Takahiro Chiba , Alejandro O. Leon , Takashi Komine

We observe an unusual behavior of the spin Hall magnetoresistance (SMR) measured in a Pt ultra-thin film deposited on a ferromagnetic insulator, which is a tensile-strained LaCoO3 (LCO) thin film with the Curie temperature Tc=85K. The SMR…

We develop an advanced analytical model for calculating the broadband stripline ferromagnetic resonance (FMR) response for metallic ferromagnetic films, taking into account the exchange interaction as well as the exchange boundary…

Materials Science · Physics 2016-11-10 Rihan Hai , Mikhail Kostylev

Surface magnetization waves are studied on a semi-infinite magnetic medium in the perpendicular geometry. Both superconducting and insulating ferromagnets are considered. Exchange and dipole energies are taken into account, as well as…

Strongly Correlated Electrons · Physics 2009-11-11 V. Braude , E. B. Sonin

Using analysis of iso-frequency contours of the spin-wave dispersion relation, supported by micromagnetic simulations, we study the propagation of spin-wave (SW) beams in thin ferromagnetic films through the areas of the inhomogeneous…

Mesoscale and Nanoscale Physics · Physics 2018-03-28 Pawel Gruszecki , Maciej Krawczyk

We report the first observation of the internal magnetic-field distribution and flux-line depinning in the vortex-state of a type-II superconductor probed by conduction electrons spin resonance (CESR) technique. The CESR measurements were…

Superconductivity · Physics 2007-05-23 R. R. Urbano , P. G. Pagliuso , C. Rettori , Y. Kopelevich , N. O. Moreno , J. L. Sarrao

We present results of a numerical analysis of magnon spectra in supercells simulating two-dimensional and bulk random diluted ferromagnets with long-ranged pair exchange interactions. We show that low-energy spectral regions for these…

Materials Science · Physics 2016-12-02 Ilja Turek , Josef Kudrnovsky , Vaclav Drchal

The electrical detection of spin torque ferromagnetic resonance (st-FMR) is becoming a popular method for measuring the spin-Hall angle of heavy metals (HM). However, various sensible analysis on the same material with either the same or…

Mesoscale and Nanoscale Physics · Physics 2019-02-27 Yin Zhang , Q. Liu , B. F. Miao , H. F. Ding , X. R. Wang
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