Positive non-linear capacitance: the origin of the steep subthreshold-slope in ferroelectric FETs
| Autor: | Philippe Roussel, M.M. Heyns, J. Van Houdt, Nur K. Alam |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
lcsh:Medicine 02 engineering and technology 01 natural sciences Capacitance Article law.invention symbols.namesake Electronic and spintronic devices law 0103 physical sciences Electronic devices lcsh:Science 010302 applied physics Multidisciplinary Science & Technology Condensed matter physics lcsh:R NEGATIVE CAPACITANCE Experimental validation Condensed Matter::Mesoscopic Systems and Quantum Hall Effect 021001 nanoscience & nanotechnology Subthreshold slope Ferroelectricity Electrical and electronic engineering Multidisciplinary Sciences Nonlinear system Capacitor Maxwell's equations symbols Science & Technology - Other Topics lcsh:Q 0210 nano-technology Negative impedance converter |
| Zdroj: | Scientific Reports Scientific Reports, Vol 9, Iss 1, Pp 1-9 (2019) |
| Popis: | We show that the non-linear positive capacitance (PC) of ferroelectrics (FE) can explain the steep subthreshold-slope (SS) observed in FE based MOSFETs and often attributed to the existence of a negative capacitance in FE capacitors. Physically attainable and unattainable regions of the S-shape curve used in the negative capacitance theory are investigated by self-consistently solving Landau-Khalatnikov and Maxwell equations and by experimental validation. Finally, the conditions for attaining a steep SS in FE based MOSFETs assuming only positive capacitances are discussed. ispartof: SCIENTIFIC REPORTS vol:9 issue:1 ispartof: location:England status: published |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|