scholarly journals Analysis of the transport properties of iron pnictides: Spin-fluctuation scenario

2009 ◽  
Vol 80 (1) ◽  
Author(s):  
P. Prelovšek ◽  
I. Sega ◽  
T. Tohyama
Keyword(s):  
Transport Properties ◽  
Spin Fluctuation ◽  
Iron Pnictides

scholarly journals Transport Properties of Nearly Magnetic Alloys and Metals

1983 ◽  
Vol 36 (4) ◽  
pp. 537 ◽  
Author(s):  
AB Kaiser
Keyword(s):  
Electronic Structure ◽  
Transport Properties ◽  
Spin Fluctuation ◽  
Magnetic Alloys ◽  
Dilute Alloys ◽  
Pure Metals

We give an elementary review of how simple spin fluctuation models can account for the distinctive transport properties of nearly magnetic alloys and metals. The principal systems considered are dilute alloys such as PdNi in which host and impurity have somewhat similar electronic structure but with the impurity more nearly magnetic than the host. Similar effects occurring in pure metals or concentrated alloys are also mentioned.

scholarly journals Origin of gap anisotropy in spin fluctuation models of the iron pnictides

2009 ◽  
Vol 79 (22) ◽  
Author(s):  
T. A. Maier ◽  
S. Graser ◽  
D. J. Scalapino ◽  
P. J. Hirschfeld
Keyword(s):  
Spin Fluctuation ◽  
Iron Pnictides ◽  
Gap Anisotropy

Magnetotransport in Thin Films of Lan-nxCa1+nxMnnO3n+1 (n=2,3, and ∞)

1997 ◽  
Vol 494 ◽  
Author(s):  
H. Asano ◽  
J. Hayakawa ◽  
M. Matsui
Keyword(s):  
Thin Films ◽  
Low Temperature ◽  
Transport Properties ◽  
Carrier Concentration ◽  
Spin Fluctuation ◽  
Two Dimensional ◽  
Metal Insulator Transition ◽  
Metal Insulator ◽  
Number Of Layers ◽  
The Difference

ABSTRACTWith a use of the epitaxial a-axis thin films of perovskite series Lan-nxCa1+nxMnnO3n+1 (n=2,3, and ∞) with fixed carrier concentration (x=0.3), the transport properties of the series compounds have been examined to be associated with the difference in the number of the MnO2 layers. Results have indicated that a reduction in the number of layers results in systematic changes in the various features. These include an increase in resistivity, a decrease in resistivity peak temperature Tcρ corresponding to the metal-insulator transition, an enhancement of the maximum MR near Tcρ, and an increase in low temperature intrinsic MR. In order to explain the variation in these features with the number of MnO2 layers, it is necessary to take both anisotropie c-axis transfer interaction and two-dimensional spin fluctuation into account.

Spectroscopic Diagnostics of Tokamaks

1988 ◽  
Vol 102 ◽  
pp. 165-174
Author(s):  
C. de Michelis
Keyword(s):  
Transport Properties ◽  
Power Losses ◽  
Spectroscopic Diagnostics ◽  
Important Concern

AbstractImpurities being an important concern in tokamaks, spectroscopy plays a key role in their understanding. Techniques for the evaluation of concentrations, power losses and transport properties are surveyed, and a few developments are outlined.

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