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Showing 1–8 of 8 results
Advanced filters: Author: Suraj S. Cheema Clear advanced filters

  • In the standard Si transistor gate stack, replacing conventional dielectric HfO2 with an ultrathin ferroelectric–antiferroelectric HfO2–ZrO2 heterostructure exhibiting the negative capacitance effect demonstrates ultrahigh capacitance without degradation in leakage and mobility, promising for ferroelectric integration into advanced logic technology.

    • Suraj S. Cheema
    • Nirmaan Shanker
    • Sayeef Salahuddin
    Research
    Nature
    Volume: 604, P: 65-71

  • Using a three-pronged approach — spanning field-driven negative capacitance stabilization to increase intrinsic energy storage, antiferroelectric superlattice engineering to increase total energy storage, and conformal three-dimensional deposition to increase areal energy storage density — very high electrostatic energy storage density and power density are reported in HfO2–ZrO2-based thin film microcapacitors integrated into silicon.

    • Suraj S. Cheema
    • Nirmaan Shanker
    • Sayeef Salahuddin
    Research
    Nature
    Volume: 629, P: 803-809

  • Enhanced switchable ferroelectric polarization is achieved in doped hafnium oxide films grown directly onto silicon using low-temperature atomic layer deposition, even at thicknesses of just one nanometre.

    • Suraj S. Cheema
    • Daewoong Kwon
    • Sayeef Salahuddin
    Research
    Nature
    Volume: 580, P: 478-482

  • Energy-storage devices called capacitors deliver power rapidly, but the amount of energy they can absorb is limited. Deliberately disordered electric dipoles in ‘antiferroelectric’ capacitor materials could solve this problem.

    • Piush Behera
    • Suraj S. Cheema
    News & Views
    Nature
    Volume: 637, P: 1060-1062

  • Hardware implementation of analog reservoir computing is a challenge. The analog reservoir system in this work contains mixed phase boundary-based transistors with nonlinear short-term memory as physical reservoirs and artificial neuron, and nonvolatile ferroelectric transistors as readout networks.

    • Jangsaeng Kim
    • Eun Chan Park
    • Daewoong Kwon
    ResearchOpen Access
    Nature Communications
    Volume: 15, P: 1-14

  • Imaging steady-state negative capacitance in SrTiO3/PbTiO3 superlattices with atomic resolution provides solid microscale support for this phenomenon.

    • Ajay K. Yadav
    • Kayla X. Nguyen
    • Sayeef Salahuddin
    Research
    Nature
    Volume: 565, P: 468-471