Tuning of Microwave Frequency and Power Enhancement Using Spin Torque Nano-Oscillator With Tilted Polarizer

Bhoomeeswaran, H.; Sabareesan, P.

doi:10.1109/tmag.2017.2766149

Cited by 16 publications

(7 citation statements)

References 45 publications

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“…This TP can add a new dimension compared to its predecessor device, called STNO, in terms of additional asymmetry and nonlinearity, eventually paving the way for many benefits. Furthermore, it provides additional control and flexibility in tailoring the device characteristics for specific applications [10].In continuation of the above studies, we showed an intense interest by studying the dynamics of the device and modeled a TPSTNO, which emits a frequency of up to 124.5 GHz. Later, we modeled a Magnetoresistance-based TPSTNO and tuned the frequency up to 202 GHz.…”

Section: Introductionmentioning

confidence: 91%

Enhancement of microwave frequency via heterogeneous magneto resistance tilted polarizer based spin torque nano oscillator with the inclusion of Oersted field

Bhoomeeswaran,

Sabareesan

2023

J. Phys.: Conf. Ser.

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Here, we presented a heterogeneous Magneto Resistance Tilted Polarizer-based Spin Torque Nano Oscillator [MRTP-STNO] and theoretically included Current Induced Oersted Field [CIOF] via the macro-spin domain. The dynamics of magnetization provoked by Spin Transfer Torque [STT] are studied by solving Landau-Lifshitz-Gilbert-Slonczewski [LLGS] equation. In this device, β is the independent tilt angle of the fixed layer. In contrast, θ is the angle between the free layer magnetization and the easy axis of the device, respectively. Angles β and θ can be varied from 10° to 90° as an increment of 10°. The maximum obtained frequency of the device of about 215 GHz, and PSD of 1.7 μW/mA2/GHz with CIOF as 50 kA/m. We suggest the device is an ideal candidate for ultra High-Frequency and unveils a new path for foreseeable spintronic devices.

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Section: Introductionmentioning

confidence: 91%

Enhancement of microwave frequency via heterogeneous magneto resistance tilted polarizer based spin torque nano oscillator with the inclusion of Oersted field

Bhoomeeswaran,

Sabareesan

2023

J. Phys.: Conf. Ser.

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“…Eventually, the STT develops a sustained oscillation in the apex layer as the generation of microwave generation. The free layer magnetization dynamics is governed by the equation called LLGS, which may be written as [4]:…”

Section: Device and Its Dynamical Equationmentioning

confidence: 99%

Microwave frequency tunability via heterogeneous Oersted field tilted polarizer based spin torque nano oscillator

Bhoomeeswaran,

Sabareesan

2023

J. Phys.: Conf. Ser.

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Here, we have devised a heterogeneous-based Tilted Polarizer [TP] Spin Torque Nano Oscillator [STNO] along with the consideration of the Current Induced Oersted Field [CIOF]. The magnetization precession dynamics governed by Spin Transfer Torque [STT] are studied by solving Landau-Lifshitz-Gilbert-Slonczewski [LLGS] equation numerically. Here, β refers to an independent tilt angle of the pinned layer, and θ refers to an angle between the free layer magnetization and the easy axis of the device, respectively. The device emits a maximum frequency of about 77.5 GHz and PSD of 1.3 µW/mA2/GHz with 50 kA/m as the strength of CIOF. The author sparks that the modeled OE TP STNO device applies to High-Frequency applications and paves the way for forthcoming spintronic devices in the future.

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“…It has been shown that the magnetization oscillations are possible in the spin-Hall system when placing an additional tilted polarizer [29,30,31,32,33] above or below the ferromagnetic layer along with a spacer [25,26]. The spin-Hall effect has been utilized for self-oscillations in an in-plane magnetized system under the effect of applied magnetic field [27].…”

Section: Introductionmentioning

confidence: 99%

Large Amplitude Spin-Hall Oscillations due to Field-like Torque

Arun,

Gopal,

Chandrasekar

et al. 2021

Preprint

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Large amplitude spin-Hall oscillations are identified in a ferromagnetic layer with two perpendicular in-plane easy axis in the presence of field-like torque without any polarizer and external field. The analytical study confirms the possibility of oscillations in the presence of field-like torque. The investigation shows that the oscillation frequency can be tuned from ∼2 GHz to ∼80 GHz by current and enhanced by field-like torque. Further, the enhancement of frequency along with the Q-factor by current and field-like torque is also observed.

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Tuning of Microwave Frequency and Power Enhancement Using Spin Torque Nano-Oscillator With Tilted Polarizer

Cited by 16 publications

References 45 publications

Enhancement of microwave frequency via heterogeneous magneto resistance tilted polarizer based spin torque nano oscillator with the inclusion of Oersted field

Enhancement of microwave frequency via heterogeneous magneto resistance tilted polarizer based spin torque nano oscillator with the inclusion of Oersted field

Microwave frequency tunability via heterogeneous Oersted field tilted polarizer based spin torque nano oscillator

Large Amplitude Spin-Hall Oscillations due to Field-like Torque

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