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We have derived new boundary conditions on wave function at the normal metal / superconductor (NS) interface beyond effective mass approximation. These conditions are based on tight-binding approach and enable one to formulate quantitative…

Superconductivity · Physics 2012-10-05 A. V. Burmistrova , I. A. Devyatov , Alexander A. Golubov , Keiji Yada , Yukio Tanaka

A multi-level Anderson model is employed to simulate the system of a nanostructure tunnel junction with any number of one-particle energy levels. The tunneling current, including both shell-tunneling and shell-filling cases, is…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 David M. -T. Kuo , Yia-Chung Chang

Superconducting field-effect transitor (SuFET) and Josephson field-effect transistor (JoFET) technologies take advantage of electric field induced control of charge carrier concentration in order to modulate the channel superconducting…

Mesoscale and Nanoscale Physics · Physics 2019-02-21 Federico Paolucci , Giorgio De Simoni , Elia Strambini , Paolo Solinas , Francesco Giazotto

We study the quantum tunneling of two one-dimensional quasi-condensates made of alkali-metal atoms, considering two different tunneling configurations: side-by-side and head-to-tail. After deriving the quasiparticle excitation spectrum, we…

Quantum Gases · Physics 2020-07-21 Andrea Tononi , Flavio Toigo , Sandro Wimberger , Alberto Cappellaro , Luca Salasnich

We develop a semianalytical model for monolayer graphene field-effect transistors in the ballistic limit. Two types of devices are considered: in the first device, the source and drain regions are doped by charge transfer with Schottky…

Mesoscale and Nanoscale Physics · Physics 2014-09-24 Claudio Pugnaghi , Roberto Grassi , Antonio Gnudi , Valerio Di Lecce , Elena Gnani , Susanna Reggiani , Giorgio Baccarani

The Fowler-Nordheim tunneling current formula has been widely used in the design of devices based on metal/insulator (metal/semiconductor) heterojunctions with triangle potential barriers, such as the flash memory. Here we adopt the model…

Mesoscale and Nanoscale Physics · Physics 2021-03-23 Zenghua Cai , Menglin Huang , Peng Zhou , Shiyou Chen

Several models of thermionic energy nanoconverters have been proposed to study the transport phenomena that take place in electronic devices. For example, in resonant tunneling junctions those phenomena are manifested through the…

Mesoscale and Nanoscale Physics · Physics 2020-06-02 G. Valencia-Ortega , L. A. Arias-Hernandez

We have experimentally realized novel space-time inversion (P-T) invariant Z2-type topological semimetal-bands, via an analogy between the momentum space and a controllable parameter space in superconducting quantum circuits. By measuring…

Quantum Physics · Physics 2017-11-03 Xinsheng Tan , Yuxin Zhao , Qiang Liu , Guangming Xue , Haifeng Yu , Zidan Wang , Yang Yu

We develop a simulation framework for electrostatic and transport modeling of 2D Topological insulator field-effect transistor (2D TIFETs), based solely on first-principles calculations using density functional theory (DFT). We find that…

Mesoscale and Nanoscale Physics · Physics 2026-03-30 Hyeonseok Choi , Yosep Park , Subeen Lim , Yeonghun Lee

We propose to investigate flux qubits by the impedance measurement technique (IMT), currently used to determine the current--phase relation in Josephson junctions. We analyze in detail the case of a high-quality tank circuit coupled to a…

We have investigated the non-quasi-static (NQS) effects in graphene field-effect transistors (GFETs), which are relevant for GFET operation at high frequencies as a result of significant carrier inertia. A small-signal NQS model is derived…

Applied Physics · Physics 2020-09-18 Francisco Pasadas , David Jiménez

In studying compensated semimetals, the two-band model has proven extremely useful in capturing electrical conductivity under magnetic field, as a function of density and mobility of electron-like and hole-like carriers. However, it rarely…

Strongly Correlated Electrons · Physics 2025-04-29 Ian Leahy , Andrew Treglia , Gang Cao , Brian Skinner , Minhyea Lee

An application of the thermodynamic field theory (TFT) to transport processes in L-mode tokamak plasmas is presented. The nonlinear corrections to the linear (Onsager) transport coefficients in the collisional regimes are derived. A quite…

Plasma Physics · Physics 2009-11-13 Giorgio Sonnino , Philippe Peeters

We present a simple model for electron transport in semiconductor devices that exhibit tunneling between the conduction and valence bands. The model is derived within the usual Bloch-Wannier formalism by a k-expansion, and is formulated in…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 Omar Morandi , Michele Modugno

The quasi-energy spectrum recently measured in experiments with a squeeze-driven superconducting Kerr oscillator showed good agreement with the energy spectrum of its corresponding static effective Hamiltonian. The experiments also…

A heterojunction tunneling field effect transistor based on armchair graphene nanoribbons is proposed and studied using ballistic quantum transport simulation based on 3D real space nonequilibrium Green's function formalism. By using low…

Mesoscale and Nanoscale Physics · Physics 2013-12-13 Fei Liu , Xiaoyan Liu , Jinfeng Kang , Yi Wang

A unified theoretical description of ballistic and diffusive carrier transport in parallel-plane semiconductor structures is developed within the semiclassical model. The approach is based on the introduction of a thermo-ballistic current…

Materials Science · Physics 2009-11-10 R. Lipperheide , U. Wille

A general nonperturbative theory of the low-energy electron propagator is developed and used to calculate the single-particle density of states in a variety of systems. This method involves the decoupling of the electron-electron…

Strongly Correlated Electrons · Physics 2008-09-17 Kelly R. Patton

This paper discusses how classical transport theories such as the thermionic emission, can be used as a powerful tool for the study and the understanding of the most complex mechanisms of transport in Fin Field Effect Transistors (FinFETs).…

Mesoscale and Nanoscale Physics · Physics 2011-11-28 G. C. Tettamanzi , A. Paul , S. Lee , G. Klimeck , S. Rogge

An unconventional bosonization approach that employs a modified Fermi-Bose correspondence is used to obtain the tunneling density of states (TDOS) of fractional quantum Hall (FQHE) edges in the vicinity of a point contact. The chiral…

Mesoscale and Nanoscale Physics · Physics 2023-11-28 Nikhil Danny Babu , Girish S. Setlur
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