Wide-Band Nonreciprocity of Surface Acoustic Waves Induced by Magnetoelastic Coupling with a Synthetic Antiferromagnet

2019 ◽  
Vol 12 (5) ◽  
Author(s):  
Roman Verba ◽  
Vasil Tiberkevich ◽  
Andrei Slavin
Keyword(s):  
Acoustic Waves ◽  
Surface Acoustic Waves ◽  
Wide Band ◽  
Magnetoelastic Coupling ◽  
Synthetic Antiferromagnet

scholarly journals Nonreciprocal surface acoustic wave propagation via magneto-rotation coupling

2020 ◽  
Vol 6 (32) ◽  
pp. eabb1724 ◽  
Author(s):  
Mingran Xu ◽  
Kei Yamamoto ◽  
Jorge Puebla ◽  
Korbinian Baumgaertl ◽  
Bivas Rana ◽  
...  
Keyword(s):  
Acoustic Wave ◽  
Acoustic Waves ◽  
Wave Attenuation ◽  
Surface Acoustic Waves ◽  
Intrinsic Property ◽  
Coupling Mechanism ◽  
Phonon Coupling ◽  
Acoustic Wave Propagation ◽  
Phonon Interaction ◽  
Magnetoelastic Coupling

A fundamental form of magnon-phonon interaction is an intrinsic property of magnetic materials, the “magnetoelastic coupling.” This form of interaction has been the basis for describing magnetostrictive materials and their applications, where strain induces changes of internal magnetic fields. Different from the magnetoelastic coupling, more than 40 years ago, it was proposed that surface acoustic waves may induce surface magnons via rotational motion of the lattice in anisotropic magnets. However, a signature of this magnon-phonon coupling mechanism, termed magneto-rotation coupling, has been elusive. Here, we report the first observation and theoretical framework of the magneto-rotation coupling in a perpendicularly anisotropic film Ta/CoFeB(1.6 nanometers)/MgO, which consequently induces nonreciprocal acoustic wave attenuation with an unprecedented ratio of up to 100% rectification at a theoretically predicted optimized condition. Our work not only experimentally demonstrates a fundamentally new path for investigating magnon-phonon coupling but also justifies the feasibility of the magneto-rotation coupling application.

Phase Nonreciprocity of Microwave‐Frequency Surface Acoustic Waves in Hybrid Heterostructures with Magnetoelastic Coupling

2021 ◽  
pp. 2100263
Author(s):  
Roman Verba ◽  
Elena N. Bankowski ◽  
Thomas J. Meitzler ◽  
Vasil Tiberkevich ◽  
Andrei Slavin
Keyword(s):  
Acoustic Waves ◽  
Surface Acoustic Waves ◽  
Microwave Frequency ◽  
Magnetoelastic Coupling

Characterization of RF Sputtered ZnO Piezoelectric Films Using Transmission Electron Microscope

1975 ◽  
Vol 33 ◽  
pp. 86-87
Author(s):  
Kemining W. Yeh ◽  
Richard S. Muller ◽  
Wei-Kuo Wu ◽  
Jack Washburn
Keyword(s):  
Integrated Circuit ◽  
Acoustic Waves ◽  
New Technology ◽  
Surface Acoustic Waves ◽  
Electromechanical Properties ◽  
Leading Role ◽  
Saw Devices ◽  
Transmission Electron ◽  
High Degree

Considerable and continuing interest has been shown in the thin film transducer fabrication for surface acoustic waves (SAW) in the past few years. Due to the high degree of miniaturization, compatibility with silicon integrated circuit technology, simplicity and ease of design, this new technology has played an important role in the design of new devices for communications and signal processing. Among the commonly used piezoelectric thin films, ZnO generally yields superior electromechanical properties and is expected to play a leading role in the development of SAW devices.

Attenuation of surface acoustic waves by quantum dots

1998 ◽  
Vol 77 (5) ◽  
pp. 1195-1202
Author(s):  
Andreas Knabchen Yehoshua, B. Levinson, Ora
Keyword(s):  
Quantum Dots ◽  
Acoustic Waves ◽  
Surface Acoustic Waves

Brillouin light scattering from surface acoustic waves in photonic microwires

2014 ◽  
Author(s):  
Jean-Charles Beugnot ◽  
Sylvie Lebrun ◽  
Gilles Pauliat ◽  
Vincent Laude ◽  
Thibaut Sylvestre
Keyword(s):  
Light Scattering ◽  
Acoustic Waves ◽  
Surface Acoustic Waves ◽  
Brillouin Light Scattering
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