Guido Menichetti

Guido Menichetti
Università di Pisa | UNIPI

PhD

About

24
Publications
2,529
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
122
Citations
Citations since 2017
19 Research Items
121 Citations
2017201820192020202120222023010203040
2017201820192020202120222023010203040
2017201820192020202120222023010203040
2017201820192020202120222023010203040
Introduction
Guido Menichetti currently works at the department of Theory and Technology of 2D Materials at the Istituto Italiano di Tecnologia under the supervision of Prof. Marco Polini. Guido does research in Computational Physics, Solid State Physics and Condensed Matter Physics. Their most recent publication is 'Analytic treatment of the thermoelectric properties for two coupled quantum dots threaded by magnetic fields'.

Publications

Publications (24)
Preprint
Full-text available
Two-dimensional honeycomb ferromagnets offer the unprecedented opportunity to study interactions between collective modes that in standard bulk ferromagnets do not cross paths. Indeed, they harbor an optical spin-wave branch, i.e. a spin wave which disperses weakly near the Brillouin zone center. When doped with free carriers, they also host the ty...
Article
Full-text available
We discuss the consequences of the quantum uncertainty on the spectrum of the electron emitted by the β-processes of a tritium atom bound to a graphene sheet. We analyze quantitatively the issue recently raised by Cheipesh, Cheianov, and Boyarsky [Phys. Rev. D 104, 116004 (2021)], and discuss the relevant timescales and the degrees of freedom that...
Preprint
Full-text available
The unique optoelectronic properties of single layer graphene (SLG) are ideal for the development of photonic devices across a broad range of frequencies, from X-rays to microwaves. In the terahertz (THz) range (0.1-10 THz frequency) this has led to the development of optical modulators, non-linear sources, and photodetectors, with state-of-the-art...
Preprint
Full-text available
The wave-like nature of electrons leads to the existence of upper bounds on the thermoelectric response of nanostructured devices [R. S. Whitney, Phys. Rev. Lett. 112, 130601 (2014); Phys. Rev. B 91, 115425 (2015)]. This fundamental result, not present in classical thermodynamics, was demonstrated exploiting a two-terminal device modelled by non-li...
Preprint
Full-text available
We discuss the consequences of the quantum uncertainty on the spectrum of the electron emitted by the $\beta$-processes of a tritium atom bound to a graphene sheet. We analyze quantitatively the issue recently raised in [Cheipesh et al., Phys. Rev. D 104, 116004 (2021)], and discuss the relevant time scales and the degrees of freedom that can contr...
Article
Full-text available
We demonstrate a graphene–MoS2 architecture integrating multiple field-effect transistors (FETs), and we independently probe and correlate the conducting properties of van der Waals coupled graphene–MoS2 contacts with those of the MoS2 channels. Devices are fabricated starting from high-quality single-crystal monolayers grown by chemical vapor depo...
Article
Based on the Landauer-Büttiker theory, we explore the thermal regimes of two-terminal nanoscale systems with an energy-peaked transmission function. The device is in contact with two reservoirs held at different temperatures and chemical potentials. We identify the operation regions where the system acts as energy pump (thermal machine) or heat pum...
Article
Full-text available
Low-dimensional nanosystems are promising candidates for manipulating, controlling, and capturing photons with large sensitivities and low noise. If quantum engineered to tailor the energy of the localized electrons across the desired frequency range, they can allow devising of efficient quantum sensors across any frequency domain. Here, we exploit...
Preprint
Full-text available
Low dimensional nano-systems are promising candidates for manipulating, controlling and capturing photons with large sensitivities and low-noise. If quantum engineered to tailor the energy of the localized electrons across the desired frequency range, they can allow devising efficient quantum sensors across any frequency domain. Here, we exploit th...
Preprint
Full-text available
We demonstrate a graphene-MoS2 architecture integrating multiple field-effect transistors and we independently probe and correlate the conducting properties of van der Waals coupled graphene-MoS2 contacts with the ones of the MoS2 channels. Devices are fabricated starting from high-quality single-crystal monolayers grown by chemical vapor depositio...
Preprint
Atomically-thin magnetic crystals have been recently isolated experimentally, greatly expanding the family of two-dimensional materials. In this Article we present an extensive comparative analysis of the electronic and magnetic properties of ${\rm Cr}_2{\rm Ge}_2{\rm Te}_6$, based on density functional theory (DFT). We first show that the often-us...
Preprint
Full-text available
We investigate quantum transport through a two-terminal nanoscale device characterized by a model $\delta$-like transmission function of the energy carriers. The device is in contact with two reservoirs held at different temperatures and chemical potentials. The above ideal model introduced by Mahan and Sofo for the search of the electronic structu...
Article
Full-text available
Coupled double quantum dots (c-2QD) connected to leads have been widely adopted as prototype model systems to verify interference effects on quantum transport at the nanoscale. We provide here an analytic study of the thermoelectric properties of c-2QD systems pierced by a uniform magnetic field. Fully analytic and easy-to-use expressions are deriv...
Article
Improving the efficiency of organic solar cells requires atomic insight of interface electronic bands alignment of the donor and acceptor moieties composing the device. In this paper we address by abinitio calculation, with inclusion of long-range (van-der-Waals) interactions, solid state properties of a bulk heterojunction heterointerface between...
Article
Full-text available
We study quantum transport through two-terminal nanoscale devices in contact with two particle reservoirs at different temperatures and chemical potentials. We discuss the general expressions controlling the electric charge current, heat currents, and the efficiency of energy transmutation in steady conditions in the linear regime. With focus in th...
Article
Full-text available
We use micro-Raman spectroscopy to study strain in free-standing graphene monolayers anchored to SiN holes of non-circular geometry. We show that a uniform differential pressure load yields measurable deviations from hydrostatic strain, conventionally observed in radially symmetric microbubbles. A pressure load of 1 bar yields a top hydrostatic str...
Article
We present a theoretical study on the nature and origin of charge carriers, charge transfer, and currents at the interface of an OFET structure composed of the PDIF-CN2 organic crystal adsorbed on the (001)-oriented, clean, silicon surface. For this aim, starting from the knowledge of the structural and electronic bulk properties of the organic cry...
Article
By means of DFT calculations, we have individuated a minimum-energy path connecting two energy minima of clean graphene on clean and relaxed oxygen-terminated (0001)'SiO2 substrate in the α-quartz configuration: one characterized by mutual graphene-SiO2 substrate distance of ∼2.8Å and weak (van der Waals) bonds between them, the other by mutual dis...
Article
The electron tunneling current through nanostructures is considered in the presence of the electron-phonon interactions. In the Keldysh nonequilibrium formalism, the lesser, greater, advanced and retarded self-energies components are expressed by means of appropriate Langreth rules. We discuss the key role played by the entailed Hilbert transforms,...

Network

Cited By