Enhancement of electron correlations in ion-gated FeSe film by in situ Seebeck and Hall measurements

2021 ◽  
Vol 103 (21) ◽  
Author(s):  
Xu Zhang ◽  
Zhongpei Feng ◽  
Xinjian Wei ◽  
Zefeng Lin ◽  
Xingyu Jiang ◽  
...  
Keyword(s):  
Electron Correlations ◽  
Hall Measurements

IN SITU HALL MEASUREMENTS OF MACROSCOPIC ELECTRICAL PROPERTIES OF CHROMIUM-COVERED Si(111) SURFACES

1999 ◽  
Vol 06 (01) ◽  
pp. 7-12 ◽  
Author(s):  
N. G. GALKIN ◽  
D. L. GOROSHKO ◽  
A. V. KONCHENKO ◽  
V. A. IVANOV ◽  
A. S. GOURALNIK
Keyword(s):  
Electrical Properties ◽  
Hole Concentration ◽  
Hole Mobility ◽  
Epitaxial Films ◽  
Surface Phase ◽  
Sheet Resistivity ◽  
Hall Measurements ◽  
Phase Layers ◽  
Surface Phases

The first in situ Hall measurements of the ordered chromium surface phases on Si(111) substrate and CrSi(111) epitaxial films after their formation are presented. Formation of Si (111)-(1× 1)- Cr (0.1 nm Cr) and Si(111)-[([Formula: see text])/30°]-Cr (0.3 nm Cr) surface phases results in an increase in the sheet resistivity of Si(111)-Cr surface phase samples. The conductivities along the surface phases at these chromium thicknesses are very low. The conductivity decrease is caused by a decrease in the electron mobility in the surface phase layers. Formation of an epitaxial CrSi(111) layer with averaged Hall parameters (hole mobility of 440 cm 2· V -1· s -1, sheet resistivity of 2.2·104 Ω-1 and sheet hole concentration of 0.65·1012 cm -2) has been observed at 1.5–1.8 nm of chromium thickness.

In situ monitoring and Hall measurements of GaN grown with GaN buffer layers

1992 ◽  
Vol 71 (11) ◽  
pp. 5543-5549 ◽  
Author(s):  
S. Nakamura ◽  
T. Mukai ◽  
M. Senoh
Keyword(s):  
Buffer Layers ◽  
In Situ Monitoring ◽  
Hall Measurements

In situ Hall measurements of Si(1 1 1)/Cr, Si(1 1 1)/Fe and Si(1 1 1)Mg disordered systems at submonolayer coverages

2001 ◽  
Vol 175-176 ◽  
pp. 223-229 ◽  
Author(s):  
N.G Galkin ◽  
D.L Goroshko ◽  
S.I Kosikov ◽  
V.A Ivanov
Keyword(s):  
Disordered Systems ◽  
Hall Measurements

A DC Comparison Study between H-Intercalated and Native Epi-Graphenes on SiC Substrates

2013 ◽  
Vol 740-742 ◽  
pp. 129-132 ◽  
Author(s):  
Michael Winters ◽  
Mattias Thorsell ◽  
Jawad ul Hassan ◽  
Niklas Rorsman ◽  
Erik Janzén ◽  
...  
Keyword(s):  
Time Dependent ◽  
Comparison Study ◽  
Hall Measurements ◽  
Dc Characteristics ◽  
Qualitative Understanding ◽  
Linear Resistance ◽  
Linear Characteristic ◽  
Material Uniformity ◽  
Processing Steps

Abstract. The aim of this study is to compare DC characteristics of ‘as-grown’ and hydrogen (H)-intercalated epitaxial graphenes on SiC substrates [1,2]. Epitaxial graphene is grown on SiC at 1400-1600C, and H-intercalation is performed via in-situ introduction of Hydrogen during the graphitization process [6]. The fabrication processing steps used to define test structures are identical for the two materials. Results on the DC behaviour and uniformity issues with respect to both materials are reported. As-grown material behaves as a linear resistance, while H-intercalated demonstrates a non-linear characteristic. Hysteresis effects and time dependent behaviors are also observed in both materials. Extensive Hall measurements are performed on both materials with the aim of providing a qualitative understanding of material uniformity in both epi-graphenes.

Rendez vous with Saturn's rings

1984 ◽  
Vol 75 ◽  
pp. 743-759 ◽  
Author(s):  
Kerry T. Nock
Keyword(s):  
Solar Energy ◽  
Electric Propulsion ◽  
Power Source ◽  
Propulsion System ◽  
Low Thrust ◽  
Ring Plane ◽  
The Earth ◽  
Total Impulse ◽  
Saturn's Rings

ABSTRACTA mission to rendezvous with the rings of Saturn is studied with regard to science rationale and instrumentation and engineering feasibility and design. Future detailedin situexploration of the rings of Saturn will require spacecraft systems with enormous propulsive capability. NASA is currently studying the critical technologies for just such a system, called Nuclear Electric Propulsion (NEP). Electric propulsion is the only technology which can effectively provide the required total impulse for this demanding mission. Furthermore, the power source must be nuclear because the solar energy reaching Saturn is only 1% of that at the Earth. An important aspect of this mission is the ability of the low thrust propulsion system to continuously boost the spacecraft above the ring plane as it spirals in toward Saturn, thus enabling scientific measurements of ring particles from only a few kilometers.

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