Classification of Icosahedral Quasicrystals and their Approximants by the Electronic Conduction Mechanisms

2000 ◽  
Vol 643 ◽  
Author(s):  
Tsunehiro Takeuchi ◽  
Eiichi Banno ◽  
Tomohide Onogi ◽  
Takayuki Mizunol ◽  
Takuya Sato ◽  
...  
Keyword(s):  
Electrical Resistivity ◽  
Electronic Structure ◽  
Temperature Dependence ◽  
Electron Scattering ◽  
Weak Localization ◽  
Electronic Conduction ◽  
Boltzmann Transport ◽  
Scattering Mechanism ◽  
Icosahedral Quasicrystals

AbstractIn this paper, two independent factors, electronic structure at the Fermi energy and electron scattering, both of which determine the electrical resistivity, are clearly separated by using a plot of ρ4K versus RRR (RRR = ρ4K/ρ300K) for icosahedral quasicrystals and their approximants. Each contribution of the electronic structure and the electron scattering on the electrical resistivity was systematically revealed, and the origin for the high resistivities observed in the quasicrystals and approximants is well understood by taking each effect into account. We found that the quasicrystals and approximants are classified into three groups in terms of the electron scattering mechanism, which dominates the temperature dependence of the resistivity. The temperature dependence of the electrical resistivity in the first group is well understood in terms of the Boltzmann transport mechanism, and those in the second and the third groups are in terms of the weak localization and the Anderson localization, respectively.

Temperature dependence of the electrical resistivity and electronic structure of amorphous Fe100−xZrxfilms and multilayers

2012 ◽  
Vol 24 (49) ◽  
pp. 495402 ◽  
Author(s):  
V Kapaklis ◽  
G K Pálsson ◽  
J Vegelius ◽  
M M Haverhals ◽  
P T Korelis ◽  
...  
Keyword(s):  
Electrical Resistivity ◽  
Electronic Structure ◽  
Temperature Dependence

High precision electrical resistivity measurements on potassium below 1 K

1982 ◽  
Vol 60 (5) ◽  
pp. 703-709 ◽  
Author(s):  
William P. Pratt Jr.
Keyword(s):  
Electrical Resistivity ◽  
Simple Model ◽  
Temperature Dependence ◽  
Temperature Variation ◽  
High Precision ◽  
Electron Scattering ◽  
Room Temperature ◽  
Temperature Treatment ◽  
Resistivity Measurements

New ultra-high precision (0.1 ppm) measurements of the resistivity of potassium down to 70 mK are discussed. Between 0.35 and 1.2 K. the resistivity has a T2 temperature dependence which is independent of the sample parameters and the room temperature treatment of the samples. This behavior is consistent with the predictions for simple electron–electron scattering, but such a simple model cannot adequately explain previous data. Below 0.35 K the data are anomalous in that the temperature variation is slower than T2.

Electron–electron scattering in potassium

1979 ◽  
Vol 57 (8) ◽  
pp. 1216-1223 ◽  
Author(s):  
J. G. Cook
Keyword(s):  
Thermal Conductivity ◽  
Electrical Resistivity ◽  
Temperature Dependence ◽  
Thermoelectric Power ◽  
Electron Scattering ◽  
Noble Metals ◽  
Thermal Resistivity ◽  
Consistent Picture ◽  
Preliminary Study ◽  
Increasing Temperature

The electrical resistivity ρ, thermal conductivity κ, and thermoelectric power S have been measured for two bare K specimens between 80 and 330 K. The data fully support the main conclusions of an earlier, preliminary study by Cook and Laubitz. The Lorenz function L = κρ/T does not approach the Sommerfeld value L0 with increasing temperature. Both the magnitude and temperature dependence of L–L0 indicate the presence of an added term Wee in the thermal resistivity, due to electron–electron scattering. Such scattering also affects S. It is shown that the data for K, together with published values of B = Wee/T for Na, Rb, and the noble metals, form a consistent picture of electron–electron scattering in the monovalent metals above the Debye temperature.

Magnetic Susceptibility and Electrical Resistivity of Dilute Chromium–Titanium Alloys

1971 ◽  
Vol 49 (23) ◽  
pp. 3010-3023 ◽  
Author(s):  
C. H. Chiu ◽  
M. H. Jericho ◽  
R. H. March
Keyword(s):  
Electrical Resistivity ◽  
Magnetic Susceptibility ◽  
Temperature Dependence ◽  
Titanium Alloys ◽  
Electron Scattering ◽  
Linear Temperature Dependence ◽  
Linear Temperature ◽  
Dilute Alloys ◽  
Extra Electron ◽  
Pure Chromium

We report measurements of the magnetic susceptibility and the electrical resistivity of chromium–titanium alloys containing Ti concentrations of up to 0.6 at.%. The measurements were performed between 320 and 4.2 K. A very rapid depression of both the Néel temperature and the spin-flip temperature on alloying was observed. The paramagnetic susceptibility of pure chromium and the alloys displayed a linear temperature dependence and it is suggested that thermal expansion effects might be responsible for this linear temperature dependence. The analysis of the electrical resistivity results points to the existence of an extra electron scattering mechanism above TN in pure chromium as well as the dilute alloys.

TEMPERATURE DEPENDENCE BEHAVIOR OF ELECTRICAL RESISTIVITY IN NOBLE METALS AT LOW TEMPERATURES

2014 ◽  
Vol 5 (3) ◽  
pp. 982-992 ◽  
Author(s):  
M AL-Jalali
Keyword(s):  
Experimental Data ◽  
Electrical Resistivity ◽  
Temperature Dependence ◽  
Concentration Dependence ◽  
Low Temperatures ◽  
Noble Metals ◽  
Phonon Scattering ◽  
Theoretical Models ◽  
Residual Resistivity ◽  
Electron Phonon Scattering

Resistivity temperature – dependence and residual resistivity concentration-dependence in pure noble metals(Cu, Ag, Au) have been studied at low temperatures. Dominations of electron – dislocation and impurity, electron-electron, and electron-phonon scattering were analyzed, contribution of these mechanisms to resistivity were discussed, taking into consideration existing theoretical models and available experimental data, where some new results and ideas were investigated.

Electrical resistivity, thermopower, and thermal conductivity of single grained (Y, Tb, Ho, Er)-Mg-Zn icosahedral quasicrystals

2000 ◽  
Vol 294-296 ◽  
pp. 715-718 ◽  
Author(s):  
K Giannò ◽  
A.V Sologubenko ◽  
M.A Chernikov ◽  
H.R Ott ◽  
I.R Fisher ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Electrical Resistivity ◽  
Icosahedral Quasicrystals
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