Low Temperature Transport Properties of Ru2Si3 Single Crystals

1995 ◽  
Vol 402 ◽  
Author(s):  
U. Gottlieb ◽  
R. Madar ◽  
O. Laborde
Keyword(s):  
Low Temperature ◽  
Transport Properties ◽  
Single Crystals ◽  
Room Temperature ◽  
Scaling Law ◽  
Band Model ◽  
Metal Insulator ◽  
Typical Behaviour ◽  
Two Band Model ◽  
Resistivity Behaviour

AbstractWe present here low temperature transport properties of Ru2Si3 single crystals. Below room temperature the resistivity behaviour of this material is extrinsic. The Hall coefficient is positive down to about 10 K and the becomes negative below. We explain this crossover with a two band model. At very low T, the magnetoresistance of our crystals shows the typical behaviour for a doped semiconductor on the metallic side of the metal-insulator transition and can be described by a scaling law characteristic for weak localisation with strong electronelectron interactions.

scholarly journals Low-temperature transport properties of n-type layered homologous compounds Bi8−xSbxSe7

2020 ◽  
Vol 8 (40) ◽  
pp. 14037-14048
Author(s):  
Pavan Kumar-Ventrapati ◽  
Shantanu Misra ◽  
Gaëlle Delaizir ◽  
Anne Dauscher ◽  
Bertrand Lenoir ◽  
...  
Keyword(s):  
Low Temperature ◽  
Transport Properties ◽  
Thermoelectric Materials ◽  
Room Temperature ◽  
Parent Compound ◽  
New Class ◽  
Highly Efficient ◽  
Homologous Compounds

The n-type chalcogenide Bi8Se7 is the parent compound of a new class of highly-efficient thermoelectric materials for near-room-temperature thermoelectric applications.

The Electrical Resistivity, Thermal Conductivity, and Thermoelectric Power of Calcium from 30 K to 300 K

1975 ◽  
Vol 53 (5) ◽  
pp. 486-497 ◽  
Author(s):  
J. G. Cook ◽  
M. J. Laubitz ◽  
M. P. Van der Meer
Keyword(s):  
Thermal Conductivity ◽  
Electrical Resistivity ◽  
Band Structure ◽  
Large Deviations ◽  
Transport Properties ◽  
Thermoelectric Power ◽  
Band Model ◽  
Residual Resistance ◽  
Two Samples ◽  
Two Band Model

Data are presented for the thermal and electrical resistivity and thermoelectric power of two samples of Ca (having residual resistance ratios of 10 and 70) between 30 and 300 K. Large deviations from both Matthiessen's rule and the Wiedemann–Franz relationship are observed. The former are tentatively attributed to the presence of two distinct groups of carriers in Ca, and analyzed using the two band model. The latter deviations are interpreted as the effects of band structure. The thermoelectric power of Ca is large. In many respects the transport properties of Ca appear to be similar to those of the transition metals.

Study on thermopower and resistivity of Nd1.85Ce0.15CuO4+δ single crystals: Evidence for two-band model

2007 ◽  
Vol 369 (5-6) ◽  
pp. 493-497 ◽  
Author(s):  
H.X. Gao ◽  
H.S. Yang ◽  
Y.S. Chai ◽  
J. Liu ◽  
C.H. Sun ◽  
...  
Keyword(s):  
Single Crystals ◽  
Band Model ◽  
Two Band Model

Low temperature electrical transport properties of RuO2 and IrO2 single crystals

2004 ◽  
Vol 16 (45) ◽  
pp. 8035-8041 ◽  
Author(s):  
J J Lin ◽  
S M Huang ◽  
Y H Lin ◽  
T C Lee ◽  
H Liu ◽  
...  
Keyword(s):  
Low Temperature ◽  
Transport Properties ◽  
Single Crystals ◽  
Electrical Transport ◽  
Electrical Transport Properties

FEM and FIM Study of Reaction Zones on Platinum

1997 ◽  
Vol 62 (2) ◽  
pp. 213-217
Author(s):  
Zlatko Knor ◽  
Jan Plšek ◽  
Luboš Dvořák
Keyword(s):  
Temperature Field ◽  
Low Temperature ◽  
Single Crystals ◽  
Room Temperature ◽  
Effect Of Temperature ◽  
Surface Anisotropy ◽  
Initial Shape ◽  
Reaction Zones

The initial shape of the reaction zones for the interaction of hydrogen and oxygen on the surfaces of the single crystals of platinum in FEM and FIM devices is discussed in connection with the effect of temperature and surface anisotropy. Interaction of the (H2 + O2) mixture has been studied at room temperature and the results were confronted with the interaction of hydrogen and preadsorbed oxygen at low temperature and with the anisotropy of the low-temperature field-corrosion of platinum.

Dislocation Structures in Deformed Tin Single Crystals

1982 ◽  
Vol 40 ◽  
pp. 468-469
Author(s):  
G.W. Qiao
Keyword(s):  
Plastic Deformation ◽  
Electron Beam ◽  
Low Temperature ◽  
Single Crystals ◽  
Current Density ◽  
Perchloric Acid ◽  
Room Temperature ◽  
High Mobility ◽  
Tetragonal Structure ◽  
Methanol Mixture

Although β-tin is a familiar metal with tetragonal structure, its dislocation structures in bulk specimens after plastic deformation or irradiation have not been reported with observations by TEM probably because of difficulties in preparing specimens and the relatively high mobility of dislocations under electron beam illumination at room temperature (T/Tm~0.7). It proved possible to prepare specimens of β-tin for TEM observation using low temperature, double-jet electro-polishing techniques using 8% perchloric acid in methanol mixture at -30 °C under 80 volts and a typical current density of 0.7 Acm-2.

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