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In this work, we explore the magnetic behavior of diluted spin-ice systems, where magnetic moments are randomly removed at various concentrations. We concentrate on features in which the effect of long range dipolar interactions (usually…

Statistical Mechanics · Physics 2024-11-08 M. Gorsd , S. A. Grigera , R. A. Borzi

In a recent letter Alonso et al. (Phys. Rev. Lett. 87, 097205 (2001)) present Monte Carlo simulations for interacting dipoles. Short-time relaxation was caused by a simple noise field, acting uniformly over an "energy window" of small width…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 P. C. E. Stamp , I. S. Tupitsyn

We study the contact resistance and the transfer characteristics of back-gated field effect transistors of mono- and bi-layer graphene. We measure specific contact resistivity of ~7kohm*um2 and ~30kohm*um2 for Ni and Ti, respectively. We…

Mesoscale and Nanoscale Physics · Physics 2016-08-03 A. Di Bartolomeo , S. Santandrea , F. Giubileo , F. Romeo , M. Petrosino , R. Citro , P. Barbara , G. Lupina , T. Schroeder , A. Rubino

We present transport measurements of silicon MOS split gate structures with and without Sb implants. We observe classical point contact (PC) behavior that is free of any pronounced unintentional resonances at liquid He temperatures. The…

Mesoscale and Nanoscale Physics · Physics 2015-05-20 A. Shirkhorshidian , N. C. Bishop , J. Dominguez , R. K. Grubbs , J. R. Wendt , M. P. Lilly , M. S. Carroll

Unravelling the nature of doping-induced transition between a Mott insulator and a weakly correlated metal is crucial to understanding novel emergent phases in strongly correlated materials. For this purpose, we study the evolution of…

Strongly Correlated Electrons · Physics 2018-03-14 Yao Wang , Brian Moritz , Cheng-Chien Chen , Thomas P. Devereaux , Krzysztof Wohlfeld

We report on the influence of voltmeters on measurements of the longitudinal resistance in the quantum Hall effect regime. We show that for typical input resistances for standard digital lock-in amplifiers the longitudinal resistance can…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 F. Fischer , M. Grayson

Contact resistances between organic semiconductors and metal electrodes have been shown to play a dominant role in electronic charge injection properties of organic field-effect transistors. These effects are more prevalent in short channel…

Other Condensed Matter · Physics 2007-05-23 B. H. Hamadani , D. Natelson

A detailed comparison is presented of the temperature dependence of the conductivity of dilute, strongly interacting electrons in two-dimensional silicon inversion layers in the metallic regime in the presence and in the absence of a…

Strongly Correlated Electrons · Physics 2009-11-10 Yeekin Tsui , S. A. Vitkalov , M. P. Sarachik , T. M. Klapwijk

This letter reports a temperature-dependent limit for the subthreshold swing in MOSFETs that deviates from the Boltzmann limit at deep-cryogenic temperatures. Below a critical temperature, the derived limit saturates to a value that is…

Mesoscale and Nanoscale Physics · Physics 2019-12-06 Arnout Beckers , Farzan Jazaeri , Christian Enz

The specific property of a planar tunnel junction with thin-film diffusive plates and long enough leads is an essential enhancement of its transmission coefficient compared to the bare transparency of the tunnel barrier [1,2]. In…

Superconductivity · Physics 2017-01-04 E. V. Bezuglyi , A. S. Vasenko , E. N. Bratus'

In this work, the performance of Tunnel Field-Effect Transistors (TFETs) based on two-dimensional Transition Metal Dichalcogenide (TMD) materials is investigated by atomistic quantum transport simulations. One of the major challenges of…

Janus transition metal dichalcogenides (JTMDs) have attracted much attention because of their outstanding electronic and optical properties. The additional out-of-plane dipole in JTMDs can form n- and p-like Ohmic contacts, and this may be…

Materials Science · Physics 2024-05-17 Yun-Pin Chiu , Hsin-Wen Huang , Yuh-Renn Wu

We have experimentally and theoretically investigated the electron spin transport and spin distribution at room temperature in a Si two-dimensional (2D) inversion channel of back-gate-type spin metal-oxide-semiconductor field-effect…

Applied Physics · Physics 2020-07-22 Shoichi Sato , Masaaki Tanaka , Ryosho Nakane

The quantum transport in a narrow channel (NC) is studied in the presence of a time-dependent delta-profile electric field. The electric field is taken to be transversely polarized, with frequency $\omega$, causing inter-subband and…

Mesoscale and Nanoscale Physics · Physics 2015-06-25 C. S. Chu , C. S. Tang

We investigate the low temperature transport in 8 nm diameter Si junctionless nanowire field effect transistors fabricated by top down techniques with a wrap-around gate and two different activated doping densities. First we extract the…

Mesoscale and Nanoscale Physics · Physics 2019-01-02 Felix J. Schupp , Muhammad M. Mirza , Donald A. MacLaren , G. Andrew D. Briggs , Douglas J. Paul , Jan A. Mol

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

This study investigates the impact of out-of-plane compressive mechanical stress (MS) on the performance and reliability of n-channel IGZO thin film transistors (TFTs). It is demonstrated that MS induces a positive Vth shift in the device…

Recently, square-net materials have attracted lots of attention for the Dirac semimetal phase with negligible spin-orbit coupling (SOC) gap, e.g. ZrSiS/LaSbTe and CaMnSb$_2$. In this paper, we demonstrate that the Jahn-Teller effect…

Materials Science · Physics 2022-06-14 Junze Deng , Dexi Shao , Jiacheng Gao , Changming Yue , Hongming Weng , Zhong Fang , Zhijun Wang

In this work, we propose an explicit analytical equation to show the variation of top gate threshold voltage with respect to the JFET bottom gate voltage for a Flexible Threshold Voltage Field Effect Transistor (Flexible-FET) by solving 2-D…

We present an open-system quantum-mechanical 3D real-space study of the conduction band structure and conductive properties of two semiconductor systems, interesting for their beyond-Moore and quantum computing applications: phosphorus…

Mesoscale and Nanoscale Physics · Physics 2023-12-08 Juan P. Mendez , Denis Mamaluy
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