[HTML][HTML] Perspectives on atomic-scale switches for high-frequency applications based on nanomaterials

M Dragoman, M Aldrigo, D Dragoman - Nanomaterials, 2021 - mdpi.com
Nanomaterials science is becoming the foundation stone of high-frequency applications.
The downscaling of electronic devices and components allows shrinking chip's dimensions …

[HTML][HTML] The Effect of Y Doping on Monoclinic, Orthorhombic, and Cubic Polymorphs of HfO2: A First Principles Study

E Pavoni, E Mohebbi, D Mencarelli, P Stipa… - Nanomaterials, 2022 - mdpi.com
HfO2 can assume different crystalline structures, such as monoclinic, orthorhombic, and
cubic polymorphs, each one characterized by unical properties. The peculiarities of this …

Design rules for memories based on graphene ferroelectric field-effect transistors

M Hassanpour Amiri, J Heidler… - ACS Applied …, 2019 - ACS Publications
Despite the great progress of ferroelectric gated field-effect transistors (Fe-FETs) based on
graphene and other 2D materials, a device model that accurately describes the hysteretic …

[HTML][HTML] The Role of Zr on Monoclinic and Orthorhombic HfxZryO2 Systems: A First-Principles Study

E Pavoni, E Mohebbi, P Stipa, D Mencarelli… - Materials, 2022 - mdpi.com
HfO2 shows different polymorphs, including monoclinic and orthorhombic ones, that exhibit
singular properties. Moreover, the character of HfO2 is also influenced by the Zr atoms as a …

2D materials nanoelectronics: new concepts, fabrication, characterization from microwaves up to optical spectrum

M Dragoman, A Dinescu… - physica status solidi (a), 2019 - Wiley Online Library
The paper presents the state‐of‐the art of nanoelectronic devices based on 2D materials
related to the cutting edge of Moore's law. Ballistic electron devices, ferroelectric, and …

Multifunctionalities of 2D MoS2 self-switching diode as memristor and photodetector

M Dragoman, M Aldrigo, D Dragoman, IM Povey… - Physica E: Low …, 2021 - Elsevier
Self-switching diodes (SSD) were fabricated at the wafer level on a 2D few-layer MoS 2 thin
film (7 monolayers) grown on a 4-inch Al 2 O 3/high-resistivity silicon wafer via Chemical …

Designing Multi‐Level Resistance States in Graphene Ferroelectric Transistors

M Hassanpour Amiri, J Heidler, K Müllen… - Advanced Functional …, 2020 - Wiley Online Library
Conventional memory elements code information in the Boolean “0” and “1” form. Devices
that exceed bistability in their resistance are useful as memory for future data storage due to …

Low-voltage permittivity control of coplanar lines based on hafnium oxide ferroelectrics grown on silicon

M Aldrigo, M Dragoman, S Iordanescu, F Nastase… - IEEE …, 2019 - ieeexplore.ieee.org
This paper is dedicated to the study of the tunable electromagnetic properties of HfO2 doped
with Zr (further referred to as HfZrO) grown on high-resistivity silicon using atomic layer …

Graphene bandgap induced by ferroelectric Pca 2 1 HfO 2 substrates: a first-principles study

GA Nemnes, D Dragoman, M Dragoman - … Chemistry Chemical Physics, 2019 - pubs.rsc.org
The electronic properties of graphene on top of ferroelectric HfO2 substrates in an
orthorhombic phase with space group Pca21 are investigated using density functional …

Quantum tunnelling in hafnia-based metal-insulator-metal diodes: atomistic-to-continuum modelling approach and experimental validation

E Pavoni, E Laudadio, CH Joseph, GM Zampa… - Physica …, 2024 - iopscience.iop.org
In this work, we present a metal-insulator-metal (MIM) diode, based on quantum tunnelling
phenomena. Its model is based on a multilevel modelling approach consisting of atomistic …