Observation of low-temperature magnetomechanic effects in crystalline resonant phonon cavities

Goryachev, Maxim; Galliou, Serge; Tobar, Michael E.

doi:10.1103/physrevb.100.174108

Cited by 3 publications

(2 citation statements)

References 45 publications

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“…The study of magnon-phonon interactions in high-quality magnets has a long history [14][15][16][17][18][19][20][21]. The arrival of crystal growth techniques, strongly improved microwave technology, and discovery of new phenomena such as the spin Seebeck effect led to a revival of the subject in the past few years, with emphasis on ultrathin films and heterostructures [4,6,[22][23][24][25][26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Magnetization dynamics affected by phonon pumping

et al. 2022

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Section: Introductionmentioning

confidence: 99%

Magnetization dynamics affected by phonon pumping

et al. 2022

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“…The study of magnon-phonon interactions in highquality magnets has a long history [14][15][16][17][18][19][20][21]. The arrival of crystal growth techniques, strongly improved microwave technology, and discovery of new phenomena such as the spin Seebeck effect, led to a revival of the subject in the past few years, with emphasis on ultrathin films and heterostructures [4,6,[22][23][24][25][26][27][28][29][30].…”

mentioning

confidence: 99%

Magnetization dynamics affected by phonon pumping

Schlitz,

Siegl,

Sato

et al. 2022

Preprint

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Generation of ultralow power phononic combs

Goryachev

Galliou

Tobar

2020

Phys. Rev. Research

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We demonstrate excitation of phononic frequency combs in a Bulk Acoustic Wave system at a temperature of 20mK using a single tone low power signal source. The observed ultra low power threshold is due to a combination of very high quality factor of 4.2 × 10 8 and relatively strong nonlinear effects. The observed repetition rate of the comb varies from 0.7 to 2Hz and spans over tens of Hz. The demonstrated system is fully excited via piezoelectricity and does not require mode spectra engineering and external optical or microwave signals. It is shown that the comb profile significantly depends on geometry of excitation and detection electrodes. Observed strong Duffing nonlinearity below the generation threshold suggests that the system is a phononic analogue to Kerr frequency combs excited in monolithic optical microresonators. The ultra-low power regime opens a way of integrating this phononic system with quantum hybrid systems such as impurity defects and superconducting qubits.Photonic frequency combs generators are an important tool used for many scientific applications allowing to couple distant parts of frequency spectrum 1 . Amongst others, these important applications include ultra stable clocks and frequency metrology 2-4 and spectroscopy 5,6 . All of these system are photonic mostly utilising a carrier signal at an optical frequency and RF or microwave repetition rates. The most popular ways to generate such combs include mode-locked lasers 7 , (four)wave mixing/Kerr nonlinearity [8][9][10][11] . Despite the fact that phononic systems also play an important role in metrology and spectroscopy, demonstration of phononic or acoustic wave combs have been sporadic 12 . Moreover, their complexity, requirements to design a certain mode structure, very high threshold powers 13 and requirement for extra laser sources 14 make these systems inapplicable for many low energy applications. In these applications Bulk Acoustic Wave (BAW) devices found very extensive use, e.g. frequency metrology 15 , quantum hybrid systems 16-18 and fundamental physics tests [19][20][21][22] . Additionally both bulk and surface acoustic wave devices are utilised for spectroscopy 23 , detection and sensors [24][25][26] . Recently nonlinear dynamics of mechanical systems including comb generation has also became a subject of theoretical research 27 . All these areas could benefit from designing devices with frequency comb functionality.To excite frequency combs at low power levels, one needs a system with low losses and strong nonlinear effects. For these reasons, in this work, we employ a phonon trapping 28 SC-cut 29 quartz BAW cavity 30 operating at 20mK. The device is an SC-cut plano-convex shaped plate of 1mm thickness, 23mm diameter and 300mm the radius of curvature. Quartz BAW cavities have demonstrated extremely high values of Quality factors at cryogenic temperatures reaching the level of a) Electronic mail: maxim.goryachev@uwa.edu.au 8 × 10 919,30 . In the same time these devices are able to demonstrate a significant levels of non...

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Observation of low-temperature magnetomechanic effects in crystalline resonant phonon cavities

Cited by 3 publications

References 45 publications

Magnetization dynamics affected by phonon pumping

Magnetization dynamics affected by phonon pumping

Magnetization dynamics affected by phonon pumping

Generation of ultralow power phononic combs

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