Search Results - "Venkatesan Ravindran, Prasanna"
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1
Antiferroelectric negative capacitance from a structural phase transition in zirconia
Published in Nature communications (09-03-2022)“…Crystalline materials with broken inversion symmetry can exhibit a spontaneous electric polarization, which originates from a microscopic electric dipole…”
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2
Conditions for Domain-Free Negative Capacitance
Published in IEEE transactions on electron devices (01-08-2023)“…While negative capacitance (NC) has been demonstrated in ferroelectric-dielectric (FE-DE) heterostructures in the form of capacitance enhancement, all…”
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3
Machine Learning-Assisted Statistical Variation Analysis of Ferroelectric Transistor: From Experimental Metrology to Adaptive Modeling
Published in IEEE transactions on electron devices (01-04-2023)“…A novel machine learning (ML)-assisted approach is proposed for investigating the variability of ferroelectric field-effect transistor (FeFET) to shorten the…”
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4
Characterizing HfO2-Based Ferroelectric Tunnel Junction in Cryogenic Temperature
Published in IEEE transactions on electron devices (01-10-2022)“…Since the discovery of ferroelectric properties in doped HfO2, various types of memory devices have emerged based on this novel material. Especially, the…”
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5
BEOL-Compatible Superlattice FEFET Analog Synapse With Improved Linearity and Symmetry of Weight Update
Published in IEEE transactions on electron devices (01-04-2022)“…Pseudo-crossbar arrays using ferroelectric field effect transistor (FEFET) mitigates weight movement and allows in situ vector-matrix multiplication (VMM),…”
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6
Why Do Ferroelectrics Exhibit Negative Capacitance?
Published in Materials (13-11-2019)“…The Landau theory of phase transitions predicts the presence of a negative capacitance in ferroelectric materials based on a mean-field approach. While recent…”
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7
A Ge-Channel Ferroelectric Field Effect Transistor With Logic-Compatible Write Voltage
Published in IEEE electron device letters (01-02-2023)“…A major roadblock for the integration of ferroelectric-field-effect transistors (FEFETs) at advanced technology nodes for embedded memory applications is their…”
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8
Material Choices for Tunnel Dielectric Layer and Gate Blocking Layer for Ferroelectric NAND Applications
Published in IEEE electron device letters (01-10-2024)“…We present an experimental study to compare the impacts of different dielectric materials - Al 2 O 3 and SiO 2 used as the tunnel dielectric layer (TDL) and…”
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9
Differential charge boost in hysteretic ferroelectric–dielectric heterostructure capacitors at steady state
Published in Applied physics letters (22-03-2021)“…A ferroelectric material in a ferroelectric–dielectric heterostructure can provide a charge boost, as often discussed in the context of negative capacitance,…”
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10
Comprehensive Time Dependent Dielectric Breakdown (TDDB) Characterization of Ferroelectric Capacitors Under Bipolar Stress Conditions
Published in 2024 IEEE International Reliability Physics Symposium (IRPS) (14-04-2024)“…In this work, we report the first comprehensive time-dependent dielectric breakdown (TDDB) study on ultra-thin HfO 2 -based ferroelectric under bipolar stress…”
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Conference Proceeding -
11
Experimental demonstration and modeling of a ferroelectric gate stack with a tunnel dielectric insert for NAND applications
Published in 2023 International Electron Devices Meeting (IEDM) (09-12-2023)“…We experimentally demonstrate, for the first time, that the insertion of an Al 2 O 3 layer in the middle of the ferroelectric (FE) Hf 0.5 Zr 0.5 O 2 (HZO)…”
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Conference Proceeding -
12
Ferroelectric Gate Stack Engineering with Tunnel Dielectric Insert for Achieving High MemoryWindow in FEFETs for NAND Applications
Published in 2024 8th IEEE Electron Devices Technology & Manufacturing Conference (EDTM) (03-03-2024)“…We experimentally demonstrate a novel gate stack engineering technique by introducing a Tunnel Dielectric Layer (TDL) between two Ferroelectric (FE) layers,…”
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Conference Proceeding -
13
Design Framework for Ferroelectric Gate Stack Engineering of Vertical NAND Structures for Efficient TLC and QLC Operation
Published in 2024 IEEE International Memory Workshop (IMW) (12-05-2024)“…We report a framework for designing a ferroelectric gate stack for vertical NAND with efficient multi-bit performance by evaluating various gate stacks,…”
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14
Characterizing HfO 2 -Based Ferroelectric Tunnel Junction in Cryogenic Temperature
Published in IEEE transactions on electron devices (01-10-2022)Get full text
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15
Characterizing HfO } -Based Ferroelectric Tunnel Junction in Cryogenic Temperature
Published in IEEE transactions on electron devices (2022)“…Since the discovery of ferroelectric properties in doped HfO<inline-formula> <tex-math notation="LaTeX">_{\text{2}}</tex-math> </inline-formula>, various types…”
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16
Machine Learning Assisted Statistical Variation Analysis of Ferroelectric Transistors: From Experimental Metrology to Predictive Modeling
Published in 2022 IEEE Symposium on VLSI Technology and Circuits (VLSI Technology and Circuits) (12-06-2022)“…We proposed a novel machine learning (ML)-assisted methodology to analyze the variability of ferroelectric field-effect transistor (FeFET) with raw data from…”
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Conference Proceeding -
17
Quantum phase transition in ferroelectric-paraelectric heterostructures
Published 03-03-2022“…Phase transition between ferroelectricity and quantum paraelectricity via non-thermal tuning parameters can lead to quantum critical behavior and associated…”
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18
BEOL Compatible Superlattice FerroFET-based High Precision Analog Weight Cell with Superior Linearity and Symmetry
Published in 2021 IEEE International Electron Devices Meeting (IEDM) (11-12-2021)“…Off-chip DRAM memory accesses limit the energy efficiency and training time of state-of-the-art deep neural networks (DNN). Compute-in-memory (CIM)…”
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Conference Proceeding -
19
A microscopic "toy" model of ferroelectric negative capacitance
Published in 2020 4th IEEE Electron Devices Technology & Manufacturing Conference (EDTM) (01-04-2020)“…The continued miniaturization of nanoelectronic devices approaches its fundamental physical limits due to power dissipation. Negative capacitance field-effect…”
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Conference Proceeding -
20
Name Familiarity Detection using EEG-based Brain Computer Interface
Published in TENCON 2019 - 2019 IEEE Region 10 Conference (TENCON) (01-10-2019)“…Electroencephalography (EEG)-based Brain Computer Interface has been used for image and voice familiarity detection in earlier works. It is known that…”
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Conference Proceeding