Results 31 to 40 of about 4,877 (226)

Effect of barrier variabilities on the strain propagation and 2DEG profile of GaN/AlGaN HEMT heterostructures [PDF]

, 2023
This work presents an analysis of strain distribution and depth of 2DEG (2-Dimensional Electron Gas) in AlGaN/GaN HEMT (high electron mobility transistor) heterostructures for different variabilities.
Saha, Jhuma, Kumar, Priyesh
core   +1 more source

Double quantum criticality in superconducting tin arrays-graphene hybrid

Nature Communications, 2018
Two quantum critical behaviors appear in a two dimensional electron gas (2DEG) but its origin remains to be attested. Here, Sun et al. construct superconducting puddles-2DEG hybrid system by depositing tin nano-islands array on monolayer graphene where ...
Yinbo Sun, Hong Xiao, Miao Zhang, Zhongying Xue, Yongfeng Mei, Xiaoming Xie, Tao Hu, Zengfeng Di, Xi Wang   +8 more
doaj   +1 more source

Modelling 2DEG charges in AlGaN/GaN heterostructures [PDF]

, 2012
In this paper we compare different approaches to calculating the charge density in the 2DEG layer of AlGaN/GaN HEMTs. The methods used are (i) analytical theory implemented in MATLAB, (ii) finite-element analysis using semiconductor TCAD software ...
NAPOLI, ETTORE, F. Hurkx, Udrea, F, F, Sque, S, G. Longobardi, ,, Šonský, J, F. Udrea, Hurkx, F, J. Šonský, Napoli, E, J. Croon, Croon, J, S. Sque, Longobardi, G   +15 more
core   +1 more source

Controlling spin-mixing conductance in KTaO3 2DEGs by varying argon-ion irradiation time [PDF]

APL Electronic Devices
The Rashba-split two-dimensional electron gas (2DEG) at the surface and interface of insulating oxides such as KTaO3 (KTO) shows great promise for all-oxide spintronics.
Yasar K. Arafath, Vaishali Yadav, Nidhi Kandwal, P. N. Santhosh, Pranaba Kishor Muduli, Prasanta Kumar Muduli   +5 more
doaj   +1 more source

Self-Heating of Annealed Ti/Al/Ni/Au Contacts to Two-Dimensional Electron Gas in AlGaN/GaN Heterostructures

Applied Sciences, 2022
In this work, we investigated the self-heating effects of annealed Ti/Al/Ni/Au ohmic contacts and two-dimensional electron gas (2DEG) in AlGaN/GaN heterostructures under strong electric field by using the short pulse current–voltage and microwave noise ...
Emilis Šermukšnis, Justinas Jorudas, Artūr Šimukovič, Vitalij Kovalevskij, Irmantas Kašalynas   +4 more
doaj   +1 more source

The Dynamic Modulation Doping Effect of Gas Molecules on an AlGaN/GaN Heterojunction Surface

Nanomaterials
AlGaN/GaN high-electron-mobility transistors (HEMTs) are widely used in high-frequency and high-power applications owing to the high two-dimensional electron gas (2DEG) concentration. However, the microscopic origin of the 2DEG remains unclear.
Ying Ma, Lin Shi, Liang Chen, Cai Chen, Yifang Hong, Hua Qin, Xiaodong Zhang, Yi Cui, Hongzhen Lin, Zhiqun Cheng, Fan Zhang, Linfeng Mao, Yong Cai   +12 more
doaj   +1 more source

Formulation of Ground States for 2DEG at Rough Surfaces and Application to Nonlinear Model of Surface Roughness Scattering in nMOSFETs

IEEE Journal of the Electron Devices Society, 2023
Electron mobility in extremely-thin-body (ETB) nanosheet channels and at cryogenic temperature is known to be dominated by surface roughness scattering.
Kei Sumita, Min-Soo Kang, Kasidit Toprasertpong, Mitsuru Takenaka, Shinichi Takagi   +4 more
doaj   +1 more source

Anomalous enhancement of thermoelectric power factor in multiple two-dimensional electron gas system

Nature Communications
Toward drastic enhancement of thermoelectric power factor, quantum confinement effect proposed by Hicks and Dresselhaus has intrigued a lot of researchers.
Yuto Uematsu, Takafumi Ishibe, Takaaki Mano, Akihiro Ohtake, Hideki T. Miyazaki, Takeshi Kasaya, Yoshiaki Nakamura   +6 more
doaj   +1 more source

HAADF STEM and Ab Initio Calculations Investigation of Anatase TiO₂/LaAlO₃ Heterointerface

Applied Sciences, 2022
The understanding of the origin of a two-dimensional electron gas (2DEG) at the surface of anatase TiO2 remains a challenging issue. In particular, in TiO2 ultra-thin films, it is extremely difficult to distinguish intrinsic effects, due to the physics ...
Mahabul Islam, Piu Rajak, Daniel Knez, Sandeep Kumar Chaluvadi, Pasquale Orgiani, Giorgio Rossi, Goran Dražić, Regina Ciancio   +7 more
doaj   +1 more source

Extrinsic and Intrinsic Charge Transfer at Interfaces of Membrane‐Based Oxide Heterostructures

Advanced Electronic Materials, EarlyView.
Freestanding oxides have emerged as a new opportunity to tailor oxides outside of the typical epitaxial constraints. We present the fabrication of TiO2‐terminated SrTiO3 membranes via direct growth control. We demonstrate competing ionic and electronic charge transfer in LaAlO3/SrTiO3 bilayers using near ambient pressure XPS.
Kapil Nayak, Marcus A. Wohlgemuth, Anton Kaus, Lisa Heymann, Alexandros Sarantopoulos, Lee‐Kang Huang, Christoph Baeumer, Regina Dittmann, Felix Gunkel   +8 more
wiley   +1 more source