English
Related papers

Related papers: Mode conversion by symmetry breaking of propagatin…

200 papers

Patterned magnetic nanostructures are potential candidates for future energy efficient, on-chip communication devices. Here, we have experimentally and numerically studied the role of nanochannels to manipulate spin waves in Ni80Fe20…

Mesoscale and Nanoscale Physics · Physics 2020-12-30 Sourav Sahoo , Surya Narayan Panda , Saswati Barman , Yoshichika Otani , Anjan Barman

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…

We study spin transport of holes through stubless or stubbed waveguides modulated periodically by diluted magnetic semiconductor (DMS) sections of width b1 . Injected holes of up (down) spin feel a periodically modulated barrier (well)…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 X. F. Wang , P. Vasilopoulos

We report unidirectional transmission of micron-wide spin waves beams in a 55 nm thin YIG. We downscaled a chiral coupling technique implementing Ni80Fe20 nanowires arrays with different widths and lattice spacing to study the…

Applied Physics · Physics 2023-01-13 L. Temdie , V. Castel , C. Dubs , G. Pradhan , J. Solano , H. Majjad , R. Bernard , Y. Henry , M. Bailleul , V. Vlaminck

This paper presents an analytical study of the coexistence of different transport regimes in quasi-one-dimensional surface-disordered waveguides (or electron conductors). To elucidate main features of surface scattering, the case of two…

Statistical Mechanics · Physics 2015-05-20 M. Rendón , N. M. Makarov , F. M. Izrailev

We investigate how geometry influences spin dynamics in polygonal magnetic nanotubes. We find that lowering the rotational symmetry of nanotubes by decreasing the number of planar facets, splits an increasing number of spin-wave modes,…

Mesoscale and Nanoscale Physics · Physics 2022-06-15 Lukas Körber , István Kézsmárki , Attila Kákay

Spin waves offer intriguing novel perspectives for computing and signal processing, since their damping can be lower than the Ohmic losses in conventional CMOS circuits. For controlling the spatial extent and propagation of spin waves on…

The asymmetry of the modal profiles for dipole-exchange spin waves propagating in in-plane magnetized ferromagnetic films at a right angle to the applied magnetic field has been investigated theoretically. It was found that in the…

Mesoscale and Nanoscale Physics · Physics 2012-09-20 Mikhail Kostylev

Magnonics is gaining momentum as an emerging technology for information processing. The wave character and Joule heating-free propagation of spin-waves hold promises for highly efficient analog computing platforms, based on integrated…

Spin waves are collective perturbations in the orientation of the magnetic moments in magnetically ordered materials. Their rich phenomenology is intrinsically three-dimensional; however, the three-dimensional imaging of spin waves has so…

In this work we introduce a symmetry classification for electronic density waves which break translational symmetry due to commensurate wave vector modulations. The symmetry classification builds on the concept of extended point groups:…

Strongly Correlated Electrons · Physics 2016-03-08 J. W. F. Venderbos

The conductance profiles of magnetic transition metal atoms, such as Fe, Co and Mn, deposited on surfaces and probed by a scanning tunneling microscope (STM), provide detailed information on the magnetic excitations of such nano-magnets. In…

Mesoscale and Nanoscale Physics · Physics 2013-05-30 Aaron Hurley , Nadjib Baadji , Stefano Sanvito

We report spin-wave excitations in annular antidot lattice fabricated from 15 nm-thin Ni80Fe20 flm. The nanodots of 170 nm diameters are embedded in the 350 nm (diameter) antidot lattice to form the annular antidot lattice, which is…

Mesoscale and Nanoscale Physics · Physics 2019-09-24 Nikita Porwal , Anulekha De , Sucheta Mondal , Koustuv Dutta , Samiran Choudhury , Jaivardhan Sinha , Anjan Barman , P. K. Datta

We report on the consequences of non-uniform exchange in magnetic systems. The quantum mechanical exchange interaction between spins is responsible for the phenomenon of magnetic order, and is generally considered to be uniform across bulk…

Materials Science · Physics 2021-09-22 Rair Macêdo , Arjun S. Kudinoor , Karen L. Livesey , Robert E. Camley

The dispersion of spin waves in vertical meander-shaped CoFeB thin films consisting of segments located at 90{\deg} angles with respect to each other is investigated by Brillouin light scattering spectroscopy. We reveal the periodic…

We present wave transport experiments in hyperuniform disordered arrays of cylinders with high dielectric permittivity. Using microwaves, we show that the same material can display transparency, photon diffusion, Anderson localization, or a…

Disordered Systems and Neural Networks · Physics 2020-10-16 Geoffroy J. Aubry , Luis S. Froufe-Pérez , Ulrich Kuhl , Olivier Legrand , Frank Scheffold , Fabrice Mortessagne

A theoretical model of a single molecule coupled to many vibronic modes is presented. At low energies, transport is dominated by electron-vibron processes where transfer of an electron through the dot is accompanied by the…

Mesoscale and Nanoscale Physics · Physics 2011-08-19 Abdullah Yar , Andrea Donarini , Sonja Koller , Milena Grifoni

A theoretical model of a single molecule coupled to many vibronic modes is presented. At low energies, transport is dominated by electron-vibron processes where transfer of an electron through the dot is accompanied by the…

Mesoscale and Nanoscale Physics · Physics 2015-03-17 Abdullah Yar , Andrea Donarini , Sonja Koller , Milena Grifoni

We study nonlinear modes in subwavelength slot waveguides created by a nonlinear dielectric slab sandwiched between two metals. We present the dispersion diagrams of the families of nonlinear plasmonic modes and reveal that the symmetric…

Optics · Physics 2009-05-29 A. R. Davoyan , I. V. Shadrivov , Yu. S. Kivshar

The research on the properties of spin waves (SWs) in three-dimensional nanosystems is an innovative idea in the field of magnonics. Mastering and understanding the nature of magnetization dynamics and binding of SWs at surfaces, edges, and…

Mesoscale and Nanoscale Physics · Physics 2023-08-29 Mateusz Gołębiewski , Hanna Reshetniak , Uladzislau Makartsou , Maciej Krawczyk , Arjen van den Berg , Sam Ladak , Anjan Barman