Connecting physics to systems with modular spin-circuits
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arXiv
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| Autores principales: | , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866916469700296704 |
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| author | Selcuk, Kemal Bunaiyan, Saleh Singh, Nihal Sanjay Sayed, Shehrin Ganguly, Samiran Finocchio, Giovanni Datta, Supriyo Camsari, Kerem Y. |
| author_facet | Selcuk, Kemal Bunaiyan, Saleh Singh, Nihal Sanjay Sayed, Shehrin Ganguly, Samiran Finocchio, Giovanni Datta, Supriyo Camsari, Kerem Y. |
| contents | An emerging paradigm in modern electronics is that of CMOS + $\sf X$ requiring the integration of standard CMOS technology with novel materials and technologies denoted by $\sf X$. In this context, a crucial challenge is to develop accurate circuit models for $\sf X$ that are compatible with standard models for CMOS-based circuits and systems. In this perspective, we present physics-based, experimentally benchmarked modular circuit models that can be used to evaluate a class of CMOS + $\sf X$ systems, where $\sf X$ denotes magnetic and spintronic materials and phenomena. This class of materials is particularly challenging because they go beyond conventional charge-based phenomena and involve the spin degree of freedom which involves non-trivial quantum effects. Starting from density matrices $-$ the central quantity in quantum transport $-$ using well-defined approximations, it is possible to obtain spin-circuits that generalize ordinary circuit theory to 4-component currents and voltages (1 for charge and 3 for spin). With step-by-step examples that progressively become more complex, we illustrate how the spin-circuit approach can be used to start from the physics of magnetism and spintronics to enable accurate system-level evaluations. We believe the core approach can be extended to include other quantum degrees of freedom like valley and pseudospins starting from corresponding density matrices. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_19345 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Connecting physics to systems with modular spin-circuits Selcuk, Kemal Bunaiyan, Saleh Singh, Nihal Sanjay Sayed, Shehrin Ganguly, Samiran Finocchio, Giovanni Datta, Supriyo Camsari, Kerem Y. Mesoscale and Nanoscale Physics Emerging Technologies An emerging paradigm in modern electronics is that of CMOS + $\sf X$ requiring the integration of standard CMOS technology with novel materials and technologies denoted by $\sf X$. In this context, a crucial challenge is to develop accurate circuit models for $\sf X$ that are compatible with standard models for CMOS-based circuits and systems. In this perspective, we present physics-based, experimentally benchmarked modular circuit models that can be used to evaluate a class of CMOS + $\sf X$ systems, where $\sf X$ denotes magnetic and spintronic materials and phenomena. This class of materials is particularly challenging because they go beyond conventional charge-based phenomena and involve the spin degree of freedom which involves non-trivial quantum effects. Starting from density matrices $-$ the central quantity in quantum transport $-$ using well-defined approximations, it is possible to obtain spin-circuits that generalize ordinary circuit theory to 4-component currents and voltages (1 for charge and 3 for spin). With step-by-step examples that progressively become more complex, we illustrate how the spin-circuit approach can be used to start from the physics of magnetism and spintronics to enable accurate system-level evaluations. We believe the core approach can be extended to include other quantum degrees of freedom like valley and pseudospins starting from corresponding density matrices. |
| title | Connecting physics to systems with modular spin-circuits |
| topic | Mesoscale and Nanoscale Physics Emerging Technologies |
| url | https://arxiv.org/abs/2404.19345 |