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The spectrum of a segment of InAs nanowire, confined between two superconducting leads, was measured as function of gate voltage and superconducting phase difference using a third normal-metal tunnel probe. Sub-gap resonances for odd…

Mesoscale and Nanoscale Physics · Physics 2014-01-14 W. Chang , V. E. Manucharyan , T. S. Jespersen , J. Nygard , C. M. Marcus

Altermagnets recently came into the spotlight as a new class of magnetic materials, arising as a consequence of specific crystal symmetries. They are characterized by a spin-polarized electronic band structure similar to ferromagnets, but…

In the emerging field of magnonics, spin waves are foreseen as signal carriers for future spintronic information processing and communication devices, owing to both the very low power losses and a high device miniaturisation potential…

Planar magnetic nanoelements, either single- or multi-layered, are exploited in a variety of current or forthcoming spintronic and/or ICT devices, such as read heads, magnetic memory cells, spin-torque nano-oscillators, nanomagnetic logic…

Applied Physics · Physics 2019-08-30 Giovanni Carlotti

We present a study by ferromagnetic resonance at microwave Q band of two sheets of cobalt nanoparticles obtained by annealing SiO2 layers implanted with cobalt ions. This ex- perimental study is performed as a function of the applied…

Mesoscale and Nanoscale Physics · Physics 2015-06-23 K. Benzid , D. Muller , P. Turek , J. Tribollet

Magnetometers based on ensembles of nitrogen-vacancy centres are a promising platform for continuously sensing static and low-frequency magnetic fields. Their combination with phase-sensitive (lock-in) detection creates a highly versatile…

Instrumentation and Detectors · Physics 2017-07-05 Haitham A. R. El-Ella , Sepehr Ahmadi , Adam M. Wojciechowski , Alexander Huck , Ulrik L. Andersen

Spin transfer driven excitations in magnetic nanostructures are characterized by a relatively large microwave emission linewidth (10 -100 MHz). Here we investigate the role of thermal fluctuations as well as of the non-linear…

Mesoscale and Nanoscale Physics · Physics 2015-06-03 J. F. Sierra , M. Quinsat , U. Ebels , D. Gusakova , I. Joumard , A. S. Jenkins , L. Buda-Prejbeanu , B. Dieny , M. C. Cyrille , A. Zeltser , J. A. Katine

In this work, we investigate the spin-wave propagation in three-dimensional nanoscale CoFeB/Ta/NiFe meander structures fabricated on a structured SiO2/Si substrate. The magnonic band structure has been experimentally determined by…

Mesoscale and Nanoscale Physics · Physics 2021-04-28 G. Gubbiotti , A. Sadovnikov , E. Beginin , S. Sheshukova , S. Nikitov , G. Talmelli , I. Asselberghs , I. P. Radu , C. Adelmann , F. Ciubotaru

We study the magnetic phases of two coupled two-dimensional electron gases in order to determine under what circumstances these phases may occur in real semiconductor quantum wells and what the experimental properties of the broken-symmetry…

Condensed Matter · Physics 2007-05-23 P. I. Tamborenea , R. J. Radtke , S. Das Sarma

The magnetic behaviour of nanoparticles of antiferromagnetic ferritin, with a mean Fe loading of 410 atoms per core, has been investigated by 57Fe Mossbauer absorption spectroscopy down to very low temperature (34mK). In previous experi-…

Materials Science · Physics 2007-05-23 C. Gilles , P. Bonville , K. K. W. Wong , S. Mann

We have observed the eigenmodes of coupled transverse domain walls in a pair of ferromagnetic nanowires. Although the pair is coupled magnetostatically, its spectrum is determined by a combination of pinning by edge roughness and dipolar…

Materials Science · Physics 2014-07-29 Andrew T. Galkiewicz , Liam O'Brien , Paul S. Keatley , Russell P. Cowburn , Paul A. Crowell

Magnetic tunnel junctions are nanoscale devices which have recently attracted interested in the context of frequency multiplexed spintronic neural networks, due to their interesting dynamical properties, which are defined during the…

Applied Physics · Physics 2024-08-29 Maksim Stebliy , Alex S. Jenkins , Luana Benetti , Elvira Paz , Ricardo Ferreira

1D spin-wave conduits are envisioned as nanoscale components of magnonics-based logic and computing schemes for future generation electronics. `A-la-carte methods of versatile control of the local magnetization dynamics in such nanochannels…

Spin torque and spin Hall effect nanooscillators generate high intensity spin wave auto oscillations on the nanoscale enabling novel microwave applications in spintronics, magnonics, and neuromorphic computing. For their operation, these…

Mesoscale and Nanoscale Physics · Physics 2019-06-19 M. Haidar , A. A. Awad , M. Dvornik , R. Khymyn , A. Houshang , J. Akerman

Segmented magnetic nanowires are a promising route for the development of three dimensional data storage techniques. Such devices require a control of the coercive field and the coupling mechanisms between individual magnetic elements. In…

Spin torque nano-oscillators are nanoscopic microwave frequency generators which excel due to their large frequency tuning range and agility for amplitude and frequency modulation. Due to their compactness, they are regarded as suitable…

The quantum tunneling of the magnetization vector between excited levels are studied theoretically in single-domain ferromagnetic nanoparticles with biaxial crystal symmetry placed in an external magnetic field at an arbitarily directed…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 Rong Lu , Su-Peng Kou , Jia-Lin Zhu , Lee Chang , Bing-Lin Gu

We present transport measurements in superconductor-nanowire devices with a gated constriction forming a quantum point contact. Zero-bias features in tunneling spectroscopy appear at finite magnetic fields, and oscillate in amplitude and…

Mesoscale and Nanoscale Physics · Physics 2013-06-11 H. O. H. Churchill , V. Fatemi , K. Grove-Rasmussen , M. T. Deng , P. Caroff , H. Q. Xu , C. M. Marcus

The nature of spin wave modes excited by spin-polarized direct current in a spin-torque auto-oscillator based on a magnetic nanocontact was studied by a micromagnetic simulation in the case when the external bias magnetic field was rotated…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 G. Consolo , B. Azzerboni , L. Lopez-Diaz , G. Gerhart , E. Bankowski , V. Tiberkevich , A. N. Slavin

We studied interactions between propagating spin waves (SWs) and a single skyrmion in a perpendicularly magnetized CoFeB nanostripe where the magnetic layer is interfaced with W and MgO. Micromagnetic numerical calculations revealed that…

Mesoscale and Nanoscale Physics · Physics 2015-08-25 Junhoe Kim , Sang-Koog Kim