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We present a three-dimensional simulation study of silicon nanowire double quantum dots (DQDs) with leads at T = 2 K, which extends beyond traditional effective mass or quasi-1D and quasi-2D approaches typically applied to bulk or planar…

Mesoscale and Nanoscale Physics · Physics 2025-11-05 Nilesh Pandey , Dipanjan Basu , Leonard F Register , Sanjay K Banerjee

Detailed understanding of the role of single dopant atoms in host materials has been crucial for the continuing miniaturization in the semiconductor industry as local charging and trapping of electrons can completely change the behaviour of…

Strongly Correlated Electrons · Physics 2019-02-05 F. Massee , Y. K. Huang , M. S. Golden , M. Aprili

Scaling field-effect transistors (FETs) into the sub-10-nm regime fundamentally alters the transport mechanism, challenging long-standing design rules. This study investigates monolayer TMD FETs with channel lengths from 12 nm to 3 nm,…

Mesoscale and Nanoscale Physics · Physics 2026-01-15 Yu-Chang Chen , Chia-Yang Ling , Ken-Ming Lin

We analyze the transport in disordered two-dimensional nanoparticle arrays. We show that the commonly used scaling hypothesis to fit the I-V curves does not describe the electronic transport in these systems. On the contrary, close to the…

Mesoscale and Nanoscale Physics · Physics 2010-11-03 V. Estevez , E. Bascones

The possibility of the strong electron-electron interaction driven insulating phase from the metallic phase in two-dimensions has been suggested for clean systems without intentional disorder, but its rigorous demonstration is still…

Strongly Correlated Electrons · Physics 2021-01-04 Byoung Hee Moon , Gang Hee Han , Miloš M. Radonjić , Hyunjin Ji , Vladimir Dobrosavljević

Traditional transistors based on complementary metal-oxide-semiconductor (CMOS) and metal-oxide-semiconductor field-effect transistors (MOSFETs) are facing significant limitations as device scaling reaches the limits of Moore's Law. These…

Applied Physics · Physics 2024-09-30 Chloe Isabella Tsang , Haihui Pu , Junhong Chen

Steep transistors are crucial in lowering power consumption of the integrated circuits. However, the difficulties in achieving steepness beyond the Boltzmann limit experimentally have hindered the fundamental challenges in application of…

Mesoscale and Nanoscale Physics · Physics 2018-05-09 Hesameddin Ilatikhameneh , Tarek Ameen , ChinYi Chen , Gerhard Klimeck , Rajib Rahman

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…

Due to inhomogeneous broadening, the absorption lines of rare-earth-ion dopands in crystals are many order of magnitudes wider than the homogeneous linewidths. Several ways have been proposed to use ions with different inhomogeneous shifts…

Quantum Physics · Physics 2008-02-22 Janus H. Wesenberg , Klaus Moelmer , Lars Rippe , Stefan Kroell

Electron tomography (ET) has become a standard technique for 3D characterization of materials at the nano-scale. Traditional reconstruction algorithms such as weighted back projection suffer from disruptive artifacts with insufficient…

Computer Vision and Pattern Recognition · Computer Science 2019-04-05 Yi Jiang , Elliot Padgett , Robert Hovden , David A. Muller

Atomically thin two-dimensional (2D) materials are promising candidates for sub-10 nm transistor channels due to their ultrathin body thickness, which results in strong electrostatic gate control. Properly scaling a transistor technology…

We report a breakdown of the scaling of the antiferromagnetic transition temperature T_N on chemical doping for Pt-doped CaFe2As2. The substitution of Pt is ineffective in the reduction of antiferromagnetic ordering as well as in inducing…

Superconductivity · Physics 2012-03-06 Kazutaka Kudo , Masakazu Kobayashi , Satomi Kakiya , Masataka Danura , Minoru Nohara

We discuss the recently discovered two-dimensional metal-insulator transition in zero magnetic field in the light of the scaling theory of localization. We demonstrate that the observed symmetry relating conductivity and resistivity follows…

Disordered Systems and Neural Networks · Physics 2009-10-30 V. Dobrosavljevic , Elihu Abrahams , E. Miranda , Sudip Chakravarty

Modifying the optoelectronic properties of nanostructured materials through introduction of dopant atoms has attracted intense interest. Nevertheless, the approaches employed are often trial and error, preventing rational design. We…

Materials Science · Physics 2021-07-13 Michael G. Taylor , Heather J. Kulik

We present a quantum virial expansion for the optical response of a doped two-dimensional semiconductor. As we show, this constitutes a perturbatively exact theory in the high-temperature or low-doping regime, where the electrons' thermal…

Mesoscale and Nanoscale Physics · Physics 2024-10-07 B. C. Mulkerin , A. Tiene , F. M. Marchetti , M. M. Parish , J. Levinsen

We investigate the thermoelectric performance of 2D nanojunctions with gate tunable architectures and varying channel lengths from 3 to 12 nm using a combination of first principles simulations, including density functional theory, DFT with…

Mesoscale and Nanoscale Physics · Physics 2025-10-09 Yu-Chang Chen , Yu-Chen Chang

Unlike covalent two-dimensional (2D) materials like graphene, 2D metals have non-layered structures due to their non-directional, metallic bonding. While experiments on 2D metals are still scarce and challenging, density-functional theory…

Materials Science · Physics 2023-01-06 Kameyab Raza Abidi , Pekka Koskinen

Ohm's law provides a fundamental framework for understanding charge transport in conductors and underpins the concept of electrical scaling that has enabled the continuous advancement of modern CMOS technologies. As transistors are scaled…

Mesoscale and Nanoscale Physics · Physics 2026-01-06 Chang Niu , Adam Charnas , Jian-Yu Lin , Linjia Long , Zehao Lin , Zhuocheng Zhang , Peide D. Ye

A scaling theory is used to study the low energy physics of electron-electron interactions in a double quantum dot. We show that the fact that electrons are delocalized over two quantum dots does not affect the instability criterion for the…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 Shaffique Adam , Piet W. Brouwer , Prashant Sharma

Doping mobile carriers into ordinary semiconductors such as Si, GaAs, and ZnO was the enabling step in the electronic and optoelectronic revolutions. The recent emergence of a class of "Quantum Materials", where uniquely quantum…

Materials Science · Physics 2020-11-30 Alex Zunger , Oleksandr I. Malyi