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Synchronized charge oscillations in correlated electron systems
Open accessAbstract
Strongly correlated phases exhibit collective carrier dynamics that if properly harnessed can enable novel functionalities and applications. In this article, we investigate the phenomenon of electrical oscillations in a prototypical MIT system, vanadium dioxide (VO 2 ). We show that the key to such oscillatory behaviour is the ability to induce and stabilize a non-hysteretic and spontaneously reversible phase transition using a negative feedback mechanism. Further, we investigate the synchronization and coupling dynamics of such VO 2 based relaxation oscillators and show, via experiment and simulation, that this coupled oscillator system exhibits rich non-linear dynamics including charge oscillations that are synchronized in both frequency and phase. Our approach of harnessing a non-hysteretic reversible phase transition region is applicable to other correlated systems exhibiting metal-insulator transitions and can be a potential candidate for oscillator based non-Boolean computing.
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Cites
Steriade, M. (1997) · Cerebral Cortex · doi:10.1093/cercor/7.6.583 · Cited by 429
Pickett, M. D., & Stanley Williams, R. (2012) · Nanotechnology · doi:10.1088/0957-4484/23/21/215202 · Cited by 385
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Metadata
- Authors
- Shukla, N., Parihar, A., Freeman, E., Paik, H., Stone, G., Narayanan, V., Wen, H., Cai, Z., Gopalan, V., Engel-Herbert, R., Schlom, D. G., Raychowdhury, A., & Datta, S.
- Venue
- Scientific Reports
- Published
- 2014-05-14
- Volume
- 4
- Issue
- 1
- ISSN
- 2045-2322 (ISSN-L)
- OpenAlex
- W2089051808
- Cited by
- 210
- References
- 2
- FWCI
- 14.50
- Type
- journal article
- Language
- en
- Open access
- gold
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