Hybrid PLL system for spin torque oscillators utilizing custom ICs in 0.18 μm BiCMOS

Kreisig, Martin; Wittrock, Steffen; Protze, Florian; Lebrun, Romain; Merazzo, K. J.; Cyrille, Marie-Claire; Ferreira, Ricardo; Bortolotti, Paolo; Ebels, U.; Cros, Vincent; Ellinger, Frank

doi:10.1109/mwscas.2017.8053072

Cited by 7 publications

(4 citation statements)

References 11 publications

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“…Our observations create an important connection between the physics of EPs and Spintronics, an area of research that has crucial technological implications for data storage and processing [35,36] , sensor technology [35,37] , wide-band high-frequency communications [38][39][40][41][42][43] , and, more recently, bio-inspired networks for neuromorphic computing beyond CMOS [44,45] , to mention only a few. In this area, coupled STOs have been studied mainly with respect to the phenomenon of mutual synchronization [46][47][48][49] .…”

mentioning

confidence: 98%

Exceptional points controlling oscillation death in coupled spintronic nano-oscillators

Wittrock¹,

Perna²,

Lebrun³

et al. 2021

Preprint

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mentioning

confidence: 98%

Exceptional points controlling oscillation death in coupled spintronic nano-oscillators

Wittrock¹,

Perna²,

Lebrun³

et al. 2021

Preprint

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“…We believe that the presented results create an important connection between the non-hermitian physics of EPs and spintronics, an area of research that has crucial technological implications for data stor-age and processing [47,48] , sensor technology [47,49] , wide-102 band high-frequency communications [50][51][52][53][54][55] , and, more 103 recently, bio-inspired networks for neuromorphic com-104 puting beyond CMOS [56,57] . Up to now, coupled 105…”

mentioning

confidence: 99%

Non-hermiticity in spintronics: oscillation death in coupled spintronic nano-oscillators through emerging exceptional points

Wittrock

Perna

Lebrun

et al. 2023

Preprint

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The emergence of exceptional points (EPs) in the parameter space of a non-hermitian (2D) eigenvalue problem is studied in a general sense in mathematical physics, and has in the last decade successively reached the scope of experiments. In coupled systems, it gives rise to unique physical phenomena, which enable novel approaches for the development of seminal types of highly sensitive sensors. Here, we demonstrate at room temperature the emergence of EPs in coupled spintronic nanoscale oscillators and hence exploit the system’s non-hermiticity. We describe the observation of amplitude death of self-oscillations and other complex dynamics, and develop a linearized non-hermitian model of the coupled spintronic system, which properly describes the main experimental features. Interestingly, these spintronic nanoscale oscillators are deployment-ready in different applicational technologies, such as field, current or rotation sensors, radiofrequeny and wireless devices and, more recently, novel neuromorphic hardware solutions. Their unique and versatile properties, notably their large nonlinear behavior, open up unprecedented perspectives in experiments as well as in theory on the physics of exceptional points. Furthermore, the exploitation of EPs in spintronics devises a new paradigm for ultrasensitive nanoscale sensors and the implementation of complex dynamics in the framework of non-conventional computing.

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“…wide-band high-frequency communications [37][38][39][40][41][42] , and, more recently, bio-inspired networks for neuromorphic computing beyond CMOS [43,44] , to mention only a few.…”

mentioning

confidence: 99%

Exceptional points controlling oscillation death in coupled spintronic nano-oscillators

Wittrock¹,

Perna²,

Lebrun³

et al. 2022

Preprint

Self Cite

View full text Add to dashboard Cite

The emergence of exceptional points (EPs) in the parameter space of a (2D) eigenvalue problem is studied in a general sense in mathematical physics. In coupled systems, it gives rise to unique physical phenomena upon which novel approaches for the development of seminal types of highly sensitive sensors shall leverage their fascinating properties. Here, we demonstrate at room temperature the emergence of EPs in coupled spintronic nanoscale oscillators, coming along with the observation of amplitude death of self-oscillations and other complex dynamics. The main experimental features are properly described by the linearized theory of coupled system dynamics we develop. Interestingly, these spintronic nanoscale oscillators are deployment-ready in different applicational technologies, such as field, current or rotation sensors, radiofrequeny and wireless devices and, more recently, novel neuromorphic hardware solutions. Their unique and versatile properties, notably their large nonlinear behavior open up unprecedented perspectives in experiments as well as in theory on the physics of exceptional points. Furthermore, the exploitation of EPs in spintronics devises a new paradigm for ultrasensitive nanoscale sensors and the implementation of complex dynamics in the framework of non-conventional computing.

show abstract

Hybrid PLL system for spin torque oscillators utilizing custom ICs in 0.18 μm BiCMOS

Cited by 7 publications

References 11 publications

Exceptional points controlling oscillation death in coupled spintronic nano-oscillators

Exceptional points controlling oscillation death in coupled spintronic nano-oscillators

Non-hermiticity in spintronics: oscillation death in coupled spintronic nano-oscillators through emerging exceptional points

Exceptional points controlling oscillation death in coupled spintronic nano-oscillators

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