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- W4284894045 abstract "Abstract Resonant tunneling is a quantum‐mechanical effect in which electron transport is controlled by the discrete energy levels within a quantum‐well (QW) structure. A ferroelectric resonant tunneling diode (RTD) exploits the switchable electric polarization state of the QW barrier to tune the device resistance. Here, the discovery of robust room‐temperature ferroelectric‐modulated resonant tunneling and negative differential resistance (NDR) behaviors in all‐perovskite‐oxide BaTiO 3 /SrRuO 3 /BaTiO 3 QW structures is reported. The resonant current amplitude and voltage are tunable by the switchable polarization of the BaTiO 3 ferroelectric with the NDR ratio modulated by ≈3 orders of magnitude and an OFF/ON resistance ratio exceeding a factor of 2 × 10 4 . The observed NDR effect is explained an energy bandgap between Ru‐t 2g and Ru‐e g orbitals driven by electron–electron correlations, as follows from density functional theory calculations. This study paves the way for ferroelectric‐based quantum‐tunneling devices in future oxide electronics." @default.
- W4284894045 created "2022-07-09" @default.
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- W4284894045 date "2022-08-02" @default.
- W4284894045 modified "2023-10-10" @default.
- W4284894045 title "A Room‐Temperature Ferroelectric Resonant Tunneling Diode" @default.
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- W4284894045 doi "https://doi.org/10.1002/adma.202205359" @default.
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