A magnetic insulator transmits electrical signals via spin waves

Physics Today ◽  
2010 ◽  
Vol 63 (5) ◽  
pp. 13-15 ◽  
Author(s):  
Mark Wilson
Keyword(s):  
Spin Waves ◽  
Electrical Signals ◽  
Magnetic Insulator

Transmission of electrical signals by spin-wave interconversion in a magnetic insulator

Nature ◽  
2010 ◽  
Vol 464 (7286) ◽  
pp. 262-266 ◽  
Author(s):  
Y. Kajiwara ◽  
K. Harii ◽  
S. Takahashi ◽  
J. Ohe ◽  
K. Uchida ◽  
...  
Keyword(s):  
Spin Wave ◽  
Electrical Signals ◽  
Magnetic Insulator

scholarly journals Magnetic resonance imaging of spin-wave transport and interference in a magnetic insulator

2020 ◽  
Vol 6 (46) ◽  
pp. eabd3556
Author(s):  
Iacopo Bertelli ◽  
Joris J. Carmiggelt ◽  
Tao Yu ◽  
Brecht G. Simon ◽  
Coosje C. Pothoven ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Spin Wave ◽  
Spin Waves ◽  
Stray Field ◽  
Dense Layer ◽  
Resonance Imaging ◽  
Wave Transport ◽  
Magnetic Insulator ◽  
Coherent Spin

Spin waves—the elementary excitations of magnetic materials—are prime candidate signal carriers for low-dissipation information processing. Being able to image coherent spin-wave transport is crucial for developing interference-based spin-wave devices. We introduce magnetic resonance imaging of the microwave magnetic stray fields that are generated by spin waves as a new approach for imaging coherent spin-wave transport. We realize this approach using a dense layer of electronic sensor spins in a diamond chip, which combines the ability to detect small magnetic fields with a sensitivity to their polarization. Focusing on a thin-film magnetic insulator, we quantify spin-wave amplitudes, visualize spin-wave dispersion and interference, and demonstrate time-domain measurements of spin-wave packets. We theoretically explain the observed anisotropic spin-wave patterns in terms of chiral spin-wave excitation and stray-field coupling to the sensor spins. Our results pave the way for probing spin waves in atomically thin magnets, even when embedded between opaque materials.

scholarly journals Spin-transfer torque based damping control of parametrically excited spin waves in a magnetic insulator

2016 ◽  
Vol 108 (1) ◽  
pp. 012402 ◽  
Author(s):  
V. Lauer ◽  
D. A. Bozhko ◽  
T. Brächer ◽  
P. Pirro ◽  
V. I. Vasyuchka ◽  
...  
Keyword(s):  
Spin Waves ◽  
Spin Transfer Torque ◽  
Spin Transfer ◽  
Parametrically Excited ◽  
Damping Control ◽  
Magnetic Insulator

Spin waves

1972 ◽  
Vol 14 (7) ◽  
pp. 233-245
Author(s):  
B. Hennion ◽  
F. Moussa
Keyword(s):  
Spin Waves

ENERGY RENORMALISATION AND DAMPING OF SURFACE SPIN WAVES IN HEISENBERG FERROMAGNETS

1984 ◽  
Vol 45 (C5) ◽  
pp. C5-329-C5-333 ◽  
Author(s):  
D. E. Kontos ◽  
M. G. Cottam
Keyword(s):  
Spin Waves ◽  
Surface Spin

SYMMETRY OF SPIN WAVES AND HALDANE GAP IN CsNiCl3

1988 ◽  
Vol 49 (C8) ◽  
pp. C8-1431-C8-1432
Author(s):  
Z. Tun ◽  
W. J. L. Buyers ◽  
R. L. Armstrong ◽  
E. D. Hallman ◽  
D. P. Arovas
Keyword(s):  
Spin Waves ◽  
Haldane Gap

Increasing the information capacity of a fiber-optic multi-sensor converter of binary mechanical signals into electrical signals

2020 ◽  
pp. 15-23
Author(s):  
V. M. Grechishnikov ◽  
E. G. Komarov
Keyword(s):  
Fiber Optic ◽  
Information Capacity ◽  
Parallel Structure ◽  
Optical Scheme ◽  
Digital To Analog Converter ◽  
Electrical Signals ◽  
Mechanical Signals ◽  
Analog Converter ◽  
Output Code ◽  
Digital To Analog

The design and operation principle of a multi-sensor Converter of binary mechanical signals into electrical signals based on a partitioned fiber-optic digital-to-analog Converter with a parallel structure is considered. The digital-to-analog Converter is made from a set of simple and technological (three to five digit) fiber-optic digital-to-analog sections. The advantages of the optical scheme of the proposed. Converter in terms of metrological and energy characteristics in comparison with single multi-bit converters are justified. It is shown that by increasing the number of digital-analog sections, it is possible to repeatedly increase the information capacity of a multi-sensor Converter without tightening the requirements for its manufacturing technology and element base. A mathematical model of the proposed Converter is developed that reflects the features of its operation in the mode of sequential time conversion of the input code vectors of individual fiber-optic sections into electrical analogues and the formation of the resulting output code vector.

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