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The rectifying effect of radio-frequency (RF) current is highly sensitive in terms of the spatial spin distribution and dynamics. It emerged that an additional spin wave mode was stimulated by the direct-current (DC) current and that this…

Materials Science · Physics 2008-04-01 A. Yamaguchi , K. Motoi , H. Miyajima

It is shown that the generation linewidth of an auto-oscillator with a nonlinear frequency shift (i.e. an auto-oscillator in which frequency depends on the oscillation amplitude) is substantially larger than the linewidth of a conventional…

Materials Science · Physics 2009-11-13 Joo-Von Kim , Vasil Tiberkevich , Andrei N. Slavin

Phase locking experiments on vortex based spin transfer oscillators with an external microwave current are performed. We present clear evidence of phase locking, frequency pulling, as well as fractional synchronization in this system, with…

In the race towards "beyond 6G" telecommunication platforms, magnonics emerges as a promising solution due to its wide tunability within the FR3 band (7-24 GHz). So far, however, the need for an external magnetic bias field to allow the…

We combine top-down and bottom-up nanolithography to optimize the coupling of small molecular spin ensembles to $1.4$ GHz on-chip superconducting resonators. Nanoscopic constrictions, fabricated with a focused ion beam at the central…

We consider the spin response within the five-orbital model for iron-based superconductors and study two cases: equal and unequal gaps in different bands. In the first case, the spin resonance peak in the superconducting state appears below…

Superconductivity · Physics 2019-07-19 Yu. N. Togushova , M. M. Korshunov

We excite spin-waves with spatially inhomogeneous pulses and study the resulting frequency shifts of a chip-scale atomic clock of trapped $^{87}$Rb. The density-dependent frequency shifts of the hyperfine transition simulate the s-wave…

Atomic Physics · Physics 2012-07-19 Wilfried Maineult , Christian Deutsch , Kurt Gibble , Jakob Reichel , Peter Rosenbusch

To gain control over magnetic order on ultrafast time scales, a fundamental understanding of the way electron spins interact with the surrounding crystal lattice is required. However, measurement and analysis even of basic collective…

In this article we discuss the design and implementation of a novel microstrip resonator which allows for the absolute control of the microwaves polarization degree for frequencies up to 30 GHz. The sensor is composed of two half-wavelength…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 J. J. Henderson , C. M. Ramsey , H. M. Quddusi , E. del Barco

Short wave-length exchange-dominated propagating spin waves will enable magnonic devices to operate at higher frequencies and higher data transmission rates.1 While GMR based magnetic nano-contacts are highly efficient injectors of…

We present results of the all-sky search for gravitational-wave signals from spinning neutron stars in the data of the EXPLORER resonant bar detector. Our data analysis technique was based on the maximum likelihood detection method. We…

We study the propagation of surface spin waves in two wave guides coupled through the dipole-dipole interaction. Essential for the observations made here is the magneto-electric coupling between the spin waves and the effective…

Strongly Correlated Electrons · Physics 2019-09-04 Xi-guang Wang , L. Chotorlishvili , Guang-hua Guo , J. Berakdar

Electronic spin defects in the environment of an optically-active spin can be used to increase the size and hence the performance of solid-state quantum registers, especially for applications in quantum metrology and quantum communication.…

Quantum Physics · Physics 2024-03-19 Alexander Ungar , Paola Cappellaro , Alexandre Cooper , Won Kyu Calvin Sun

We present a micromagnetic analysis of spin-wave propagation in a magnonic crystal realized as a permalloy spin-wave waveguide with a spatial periodical variation of its saturation magnetization. Frequency band gaps were clearly observed in…

Mesoscale and Nanoscale Physics · Physics 2015-03-24 Florin Ciubotaru , Andrii V. Chumak , Björn Obry , Alexander A. Serga , Burkard Hillebrands

Spin relaxation between the two lowest-lying spin-states has been studied in the S=4 single molecule magnet Ni$_4$ under steady state conditions of low amplitude and continuous microwave irradiation. The relaxation rate was determined as a…

Mesoscale and Nanoscale Physics · Physics 2008-07-22 G. de Loubens , D. A. Garanin , C. C. Beedle , D. N. Hendrickson , A. D. Kent

Spin waves modes in magnetic waveguides with width down to 320 nm have been studied by electrical propagating spin-wave spectroscopy and micromagnetic simulations for both longitudinal and transverse magnetic bias fields. For longitudinal…

The emerging field of nano-magnonics utilizes high-frequency waves of magnetization - the spin waves - for the transmission and processing of information on the nanoscale. The advent of spin-transfer torque has spurred significant advances…

Mesoscale and Nanoscale Physics · Physics 2018-07-06 Boris Divinskiy , Vladislav E. Demidov , Sergei Urazhdin , Ryan Freeman , Anatoly B. Rinkevich , Sergej O. Demokritov

The inhomogeneity of an electron spin ensemble as well as fluctuating environment acting upon individual spins drastically shorten the spin coherence time $T_2$ and hinder coherent spin manipulation. We show that this problem can be solved…

Mesoscale and Nanoscale Physics · Physics 2021-10-13 V. V. Belykh , A. R. Korotneva , D. R. Yakovlev

The intense interest in spin-based quantum information processing has caused an increasing overlap between two traditionally distinct disciplines, such as magnetic resonance and nanotechnology. In this work we discuss rigourous design…

Mesoscale and Nanoscale Physics · Physics 2013-01-24 J. P. Dehollain , J. J. Pla , E. Siew , K. Y. Tan , A. S. Dzurak , A. Morello

Wireless communication through dynamic spectrum allocation over microwave bands, essential to accommodate exponentially growing data traffic, requires massive array of radio-frequency (RF) filters for adaptive signal shaping at arbitrary…

Applied Physics · Physics 2023-02-06 Faysal Hakim , Nicholas Rudawski , Troy Tharpe , Roozbeh Tabrizian
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