journal article·2024-02-01Open access

Implementing bidirectional logic with backhopping in magnetic tunnel junctions

Shafin Bin Hamid, Ramit Dutta, Orchi Hassan, Md Zunaid Baten

AIP Advances· Volume 14· Issue 2

Abstract

A bidirectional logic gate has been designed based on the backhopping phenomenon observed in magnetic tunnel junctions (MTJ) at high bias. The magnetization dynamics of each magnetic layer of the MTJ—having materials and geometry of a standard spin-transfer torque magnetic random access memory device—is calculated using the coupled Landau–Lifshitz–Gilbert equation-based theoretical framework. A circuit design interconnecting the MTJs has been proposed to simulate a two-input NAND gate. The results in both forward and reverse directions agree well with those found from the Boltzmann distribution, thereby demonstrating the equiprobability of all valid states.
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Research context

OpenAlex topics: Magnetic properties of thin films · Advanced Memory and Neural Computing · Advanced Data Storage Technologies

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Electrical and Electronic Engineering, Bangladesh University of Engineering and Technology (BUET) , West Palashi, Dhaka 1205, Bangladesh

References (30)

Show source-provided references
1. The emergence of spin electronics in data storage10.1038/nmat2024 ↗
2. The promise of nanomagnetics and spintronics for future logic and universal memory10.1109/jproc.2010.2064150 ↗
3. Delivering on the promise of universal memory for spin-transfer torque RAM (STT-RAM)
4. Basic principles of STT-MRAM cell operation in memory arrays10.1088/0022-3727/46/7/074001 ↗
5. Fokker–Planck study of parameter dependence on write error slope in spin-torque switching10.1109/ted.2016.2632438 ↗
6. Backhopping effect in magnetic tunnel junctions: Comparison between theory and experiment10.1063/1.4843635 ↗
7. Backhopping in magnetic tunnel junctions: Micromagnetic approach and experiment10.1016/j.jmmm.2014.08.056 ↗
8. Experimental observation of back-hopping with reference layer flipping by high-voltage pulse in perpendicular magnetic tunnel junctions10.1109/tmag.2016.2536158 ↗
9. Back-hopping in spin-transfer-torque devices: Possible origin and countermeasures10.1103/physrevapplied.9.054010 ↗
10. Back hopping in spin transfer torque switching of perpendicularly magnetized tunnel junctions10.1103/physrevb.102.184406 ↗
11. Thermally activated magnetization back-hopping based true random number generator in nano-ring magnetic tunnel junctions10.1063/1.5077025 ↗
12. Chaos and relaxation oscillations in spin-torque windmill spiking oscillators10.1103/physrevapplied.11.044093 ↗
13. Compact probabilistic Poisson neuron based on back-hopping oscillation in STT-MRAM for all-spin deep spiking neural network
14. Spiking dynamics in dual free layer perpendicular magnetic tunnel junctions10.1021/acs.nanolett.3c01597 ↗
15. Synthesis and optimization of reversible circuits—A survey10.1145/2431211.2431220 ↗
16. One-pass design of reversible circuits: Combining embedding and synthesis for reversible logic10.1109/TCAD.2017.2729468 ↗
17. Stochastic p-bits for invertible logic10.1103/physrevx.7.031014 ↗
18. Low-barrier nanomagnets as p-bits for spin logic10.1109/lmag.2017.2685358 ↗
19. A design framework for invertible logic
20. Efficient CMOS invertible logic using stochastic computing10.1109/tcsi.2018.2889732 ↗
21. Experimental demonstration of probabilistic spin logic by magnetic tunnel junctions10.1109/lmag.2019.2957258 ↗
22. Voltage-driven building block for hardware belief networks10.1109/mdat.2019.2897964 ↗
23. In-hardware training chip based on CMOS invertible logic for machine learning10.1109/tcsi.2019.2960383 ↗
24. Interface moment dynamics and its contribution to spin-transfer torque switching process in magnetic tunnel junctions10.1103/physrevb.100.014435 ↗
25. Compact modeling of perpendicular-anisotropy CoFeB/MgO magnetic tunnel junctions10.1109/ted.2011.2178416 ↗
26. Demagnetizing factors of the general ellipsoid10.1103/physrev.67.351 ↗
27. Spin angular momentum transfer in current-perpendicular nanomagnetic junctions10.1147/rd.501.0081 ↗
28. Evolution of perpendicular magnetized tunnel junctions upon annealing10.1063/1.4948378 ↗
29. Nonperturbative k-body to two-body commuting conversion Hamiltonians and embedding problem instances into Ising spins10.1103/physreva.77.052331 ↗
30. Implementing p-bits with embedded MTJ10.1109/led.2017.2768321 ↗