Conductance quantization in etched quantum point contacts

G Scappucci, LD Gaspare, E Giovine… - Physical Review B …, 2006 - APS
We fabricated strongly confined Schottky-gated quantum point contacts by etching Si∕ Si
Ge heterostructures and observed intriguing conductance quantization in units of …

Conductance and valley splitting in etched Si/SiGe one-dimensional nanostructures

G Frucci, L Di Gaspare, F Evangelisti, E Giovine… - Physical Review B …, 2010 - APS
The conductance of strongly confined one-dimensional constrictions fabricated from Si/SiGe
two-dimensional electron gases is investigated. Conductance measurements reveal …

Low field magnetotransport in strained cavities

G Scappucci, L Di Gaspare, F Evangelisti… - Physical Review B …, 2005 - APS
Low field magnetotransport revealing signatures of ballistic transport effects in strained Si∕
SiGe cavities is investigated. We fabricated strained Si∕ SiGe cavities by confining a high …

Experimental and theoretical analysis of the temperature dependence of the two-dimensional electron mobility in a strained Si quantum well

T Tanaka, G Tsuchiya, Y Hoshi, K Sawano… - Journal of Applied …, 2012 - pubs.aip.org
The temperature dependence of the mobility of the two-dimensional electron gas (2DEG) in
a silicon quantum well strained by Si 0. 7 Ge 0. 3 relaxed buffer layer is determined precisely …

X-ray scanning microscope study of strain instabilities in low mismatched SiGe alloys grown on Si (001) substrates

L Di Gaspare, A Notargiacomo, F Evangelisti… - Solid state …, 2002 - Elsevier
An X-ray scanning microscope study of self-organized morphological defects arising during
the growth of thick SiGe virtual substrates grown on Si (001) surface is reported. The 200nm …

Si/SiGe quantum devices, quantum wells, and electron-spin coherence

JL Truitt, KA Slinker, KLM Lewis, DE Savage… - … Spin Resonance and …, 2009 - Springer
Silicon quantum devices have progressed rapidly over the past decade, driven by recent
interest in spintronics and quantum computing. Spin coherence has emerged as a leading …

2DEG based on strained Si on SGOI substrate

L Di Gaspare, A Notargiacomo, E Giovine… - Physica E: Low …, 2008 - Elsevier
We report on the realization of high-mobility two-dimensional electron gas based on
modulation-doped Si/SiGe heterostructure grown directly on thin SiGe-On-Insulator (SGOI) …

Dependence of the hall factor on the shape of the constant energy surfaces in n-type Si/SiGe quantum-well structures

JC Lee, SK Chun - Journal of the Korean Physical Society, 2012 - Springer
The Hall factor in an n-type Si/SiGe two-dimensional structure is calculated for several
growth directions and under different strain conditions. Contrary to the Hall factor for a …

Quantum transport in low-dimensional Si/SiGe and AlGaN/GaN systems

G Frucci - 2010 - arcadia.sba.uniroma3.it
In recent years the study of electronic properties of low dimensional mesoscopic systems
has attracted considerable interest. One of the reasons for this is the opportunity it gives of …

Electrical Properties Of Modulation Doped Si/SiGe Heterostructures Grown On Silicon On Insulator Substrates

K Alfaramawi, A Sweyllam, L Abulnasr… - AIP Conference …, 2005 - pubs.aip.org
We report on the growth and characterization of high‐mobility 2DEGs on tensile strained Si
grown on cubic SiGe alloy on SOI substrates. The electrical properties were investigated in …