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Molecular junctions and similar devices described by an energy dependent transmission coefficient can have a high linear response thermoelectric figure of merit. Since such devices are inherently non-linear, the full thermodynamic…

Mesoscale and Nanoscale Physics · Physics 2013-10-22 Selman Hershfield , K. A. Muttalib , Bradley J. Nartowt

The linear conductance of a tunnel junction in series with an ohmic resistor is determined in the high temperature limit. The tunneling current is treated nonperturbatively by means of path integral techniques. Due to quantum effects the…

Condensed Matter · Physics 2008-02-03 Georg Goeppert , Xiaohui Wang , Hermann Grabert

This study illustrates the nature of electronic transport and its transition from one mechanism to another between a metal electrode and MoS2 channel interface in a field effect transistor (FET) device. Interestingly, measurements of the…

Materials Science · Physics 2015-05-19 Faisal Ahmed , Min Sup Choi , Xiaochi Liu , Won Jong Yoo

The junction temperature is a very important parameter for monitoring power electronics converters based on MOSFET transistors. They offer the possibility of switching at relatively higher frequencies than other transistors like IGTBTs.…

Classical Physics · Physics 2024-07-02 Ali El Arabi , Denis Maillet , Nicolas Blet , Benjamin Remy

We demonstrate a tunnel field effect transistor based on a lateral heterostructure patterned from an $\mathrm{LaAlO_3/SrTiO_3}$ electron gas. Charge is injected by tunneling from the $\mathrm{LaAlO_3}$/$\mathrm{SrTiO_3}$ contacts and the…

Mesoscale and Nanoscale Physics · Physics 2019-06-19 A. Müller , C. Şahin , M. Z. Minhas , M. E. Flatté , G. Schmidt

In this work, the transport of tunnel field-effect transistor (TFET) based on vertically stacked hereto-structures from 2D transition metal dichalcogenide (TMD) materials is investigated by atomistic quantum transport simulations. WTe2-MoS2…

Materials Science · Physics 2017-09-13 Fan Chen , Hesameddin Ilatikhameneh , Yaohua Tan , Daniel Valencia , Gerhard Klimeck , Rajib Rahman

We used transport and inelastic neutron scattering to study the optimally phosphorus-doped BaFe$_2$(As$_{0.7}$P$_{0.3}$)$_2$ superconductor ($T_c = 30$ K). In the normal state, we find that the previously reported linear temperature…

We consider a mass-asymmetric polarized Fermi system in the presence of Hartree-Fock (HF) potentials. We concentrate on the BCS regime with various interaction strengths and numerically obtain the allowed values of the chemical and HF…

Quantum Gases · Physics 2015-06-05 N. Ebrahimian , M. Mehrafarin , R. Afzali

We present a comprehensive investigation of self-heating in gallium nitride (GaN) high-electron-mobility transistors (HEMTs) through technology computer-aided design (TCAD) simulations and phonon Monte Carlo (MC) simulations. With…

Applied Physics · Physics 2024-01-25 Yang Shen , Bing-Yang Cao

We investigated spin dependent transport through Fe/GaAs/Fe tunnel junctions. The tunneling magnetoresistance effect (TMR) was probed for different types of Fe/GaAs interfaces. For interfaces cleaned by hydrogen plasma the TMR effect is…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 J. Moser , M. Zenger , C. Gerl , D. Schuh , R. Meier , P. Chen , G. Bayreuther , W. Wegscheider , D. Weiss , C. -H. Lai , R. -T. Huang , M. Kosuth , H. Ebert

Spin-dependent charge transport in magnetic tunnel junctions (MTJs) can be manipulated by a temperature gradient, which can be utilized for spintronic and spin caloritronic applications. Evaluation of the thermally induced phenomena…

Materials Science · Physics 2020-02-12 Hyejin Jang , Luca Marnitz , Torsten Huebner , Johannes Kimling , Timo Kuschel , David G. Cahill

Using calibrated simulations, we report a detailed study of the doping-less tunnel field effect transistor (TFET) on a thin intrinsic silicon film using charge plasma concept. Without the need for any doping, the source and drain regions…

Mesoscale and Nanoscale Physics · Physics 2013-09-26 M. Jagadesh Kumar , Sindhu Janardhanan

Employing quasiclassical theory of superconductivity combined with Keldysh technique we investigate large thermoelectric effect in multiterminal ballistic normal-superconducting (NS) hybrid structures. We argue that this effect is caused by…

Superconductivity · Physics 2017-02-01 Mikhail S. Kalenkov , Andrei D. Zaikin

{Analytical equations like Richardson-Dushman's or Shockley's provided a general, if simplified conceptual background, which was widely accepted in conventional electronics and made a fundamental contribution to advances in the field. In…

Mesoscale and Nanoscale Physics · Physics 2023-12-12 Ioan Baldea

A numerical method is developed to calculate the transition temperature of double or multi-layers consisting of films of super- and normal conductors. The approach is based on a dynamic interpretation of Gorkov's linear gap equation and is…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 Gerd Bergmann

We study the Coulomb pseudogap for tunneling into the two-dimensional electron system of high-mobility (Al,Ga)As/GaAs heterojunctions subjected to a quantizing magnetic field at filling factor $\nu \leq 1$. Tunnel current-voltage…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 E. V. Deviatov , A. A. Shashkin , V. T. Dolgopolov , W. Hansen , M. Holland

We present a detailed study of thermal and electrical transport behavior of single crystal Titanium disulphide flakes, which belongs to the two dimensional, transition metal dichalcogenide class of materials. In-plane Seebeck effect…

Mesoscale and Nanoscale Physics · Physics 2018-01-16 Dhavala Suri , Vantari Siva , Shalikram Joshi , Kartik Senapati , P. K. Sahoo , Shikha Varma , R. S. Patel

We show that the recent experimental claim [Pudalov {\it et al}. \prl {\bf 91}, 126403 (2003) ] of observing ``interaction effects in the conductivity of Si inversion layers at intermediate temperatures'' is incorrect and misleading. In…

Strongly Correlated Electrons · Physics 2009-11-10 S. Das Sarma , E. H. Hwang

We demonstrate both theoretically and experimentally two limiting factors in cooling electrons using biased tunnel junctions to extract heat from a normal metal into a superconductor. Firstly, when the injection rate of electrons exceeds…

Superconductivity · Physics 2009-11-10 J. P. Pekola , T. T. Heikkila , A. M. Savin , J. T. Flyktman , F. Giazotto , F. W. J. Hekking

Phonons, the quanta of lattice vibrations, are primary heat carriers for semiconductors and dielectrics. The demand of effective phonon manipulation urgently emerges, because the thermal management is crucial for the ongoing development of…