45 citations · 248 across the 14 of their papers we have counts for
14 papers
Surface Acoustic Wave induced modulation of tunneling magnetoresistance in magnetic tunnel junctions
Dhritiman Bhattacharya, Peng Sheng, Md Ahsanul Abeed +6
We show that a surface acoustic wave (SAW) applied across the terminals of a magnetic tunnel junction (MTJ) decreases both the (time-averaged) parallel and antiparallel resistances…
The effect of material defects on resonant spin wave modes in a nanomagnet
Md Ahsanul Abeed, Sourav Sahoo, David Winters +2
We have theoretically studied how resonant spin wave modes in an elliptical nanomagnet are affected by fabrication defects, such as small local thickness variations. Our results in…
Simulated annealing with time-varying strain in a dipole-coupled array of magnetostrictive nanomagnets
Md Ahsanul Abeed, Supriyo Bandyopadhyay
In a two-dimensional arrangement of closely spaced elliptical nanomagnets with in-plane magnetic anisotropy, whose major axes are aligned along columns and minor axes along rows, d…
Experimental Demonstration of an Extreme Sub-Wavelength Nanomagnetic Acoustic Antenna Actuated by Spin-Orbit Torque from a Heavy Metal Nanostrip
Md Ahsanul Abeed, Supriyo Bandyopadhyay
A novel on-chip extreme sub-wavelength "acoustic antenna" whose radiation efficiency is ~50 times larger than the theoretical limit for a resonantly driven antenna is demonstrated.…
A Nanomagnetic Voltage-Tunable Correlation Generator between Two Random Bit Streams for Stochastic Computing
M. T. McCray, Md Ahsanul Abeed, Supriyo Bandyopadhyay
Graphical probabilistic circuit models of stochastic computing are more powerful than the predominant deep learning models, but also have more demanding requirements. For example,…
Low Barrier Nanomagnet Design for Binary Stochastic Neurons: Design Challenges for Real Nanomagnets with Fabrication Defects
Md Ahsanul Abeed, Supriyo Bandyopadhyay
Much attention has been focused on the design of low barrier nanomagnets (LBM), whose magnetizations vary randomly in time owing to thermal noise, for use in binary stochastic neur…
Sensitivity of the Power Spectra of Magnetization Fluctuations in Low Barrier Nanomagnets to Barrier Height Modulation and Defects
Md Ahsanul Abeed, Supriyo Bandyopadhyay
Nanomagnets with small shape anisotropy energy barriers on the order of the thermal energy have unstable magnetization that fluctuates randomly in time. They have recently emerged…
Error Probability in Magneto-elastic Switching of Non-ideal Nanomagnets with Defects: A Case Study for the Viability of Straintronic Logic and Memory
David Winters, Md Ahsanul Abeed, Sourav Sahoo +2
Magneto-elastic (straintronic) switching of bistable magnetostrictive nanomagnets is an extremely energy-efficient switching methodology for (magnetic) binary switches that has rec…
A Microwave Oscillator Based on a Single Straintronic Magneto-tunneling Junction
Md Ahsanul Abeed, Justine L. Drobitch, Supriyo Bandyopadhyay
There is growing interest in exploring nanomagnetic devices as potential replacements for electronic devices (e.g. transistors) in digital switching circuits and systems. A special…
Hybrid magneto-dynamical modes in a single magnetostrictive nanomagnet on a piezoelectric substrate arising from magneto-elastic modulation of precessional dynamics
Sucheta Mondal, Md Ahsanul Abeed, Koustuv Dutta +4
Magneto-elastic (or "straintronic") switching has emerged as an extremely energy-efficient mechanism for switching the magnetization of magnetostrictive nanomagnets in magnetic mem…
Energy-efficient switching of nanomagnets for computing: Straintronics and other methodologies
Noel D'Souza, Ayan Biswas, Hasnain Ahmad +7
The need for increasingly powerful computing hardware has spawned many ideas stipulating, primarily, the replacement of traditional transistors with alternate "switches" that dissi…
Magneto-elastic switching of magnetostrictive nanomagnets with in-plane shape anisotropy
Md. Ahsanul Abeed, Jayasimha Atulasimha, Supriyo Bandyopadhyay
We theoretically study the effect of a material defect (material void) on switching errors associated with magneto-elastic switching of magnetization in elliptical magnetostrictive…
Hybrid straintronics and voltage-controlled-magnetic-anisotropy: Precessional switching of a perpendicular anisotropy magneto-tunneling junction without a magnetic field
Justine L. Drobitch, Md Ahsanul Abeed, Supriyo Bandyopadhyay
We propose an all-electric implementation of a precessionally switched perpendicular magnetic anisotropy magneto-tunneling-junction (p-MTJ) based toggle memory cell where data is w…
Image Processing with Dipole-Coupled Nanomagnets: Noise Suppression and Edge Enhancement Detection
Md Ahsanul Abeed, Ayan K. Biswas, Md Mamun Al-Rashid +2
Hardware based image processing offers speed and convenience not found in software-centric approaches. Here, we show theoretically that a two-dimensional periodic array of dipole-c…