FIR and transport properties of II–VI narrow gap semiconductors in high magnetic fields

1993 ◽  
Vol 184 (1-4) ◽  
pp. 432-440 ◽  
Author(s):  
Michael von Ortenberg
Keyword(s):  
Magnetic Fields ◽  
Transport Properties ◽  
High Magnetic Fields ◽  
Narrow Gap ◽  
Narrow Gap Semiconductors

Transport Properties of Silver Sheathed BSCCO-2223 Tapes in High Magnetic Fields

1995 ◽  
pp. 757-760 ◽  
Author(s):  
Helmut Piel ◽  
Dieter Busch ◽  
Bernhard Fischer ◽  
Beate Lehndorff ◽  
Rainer Theisejans
Keyword(s):  
Magnetic Fields ◽  
Transport Properties ◽  
High Magnetic Fields

HIGH-FIELD TRANSPORT PROPERTIES OF T'-Ln2-xCexCuO4 (Ln=Nd, Pr, La)

2002 ◽  
Vol 16 (20n22) ◽  
pp. 3216-3219 ◽  
Author(s):  
T. SEKITANI ◽  
N. MIURA ◽  
M. NAITO
Keyword(s):  
Magnetic Field ◽  
Low Temperature ◽  
Magnetic Fields ◽  
Transport Properties ◽  
Normal State ◽  
Low Temperatures ◽  
High Field ◽  
Magnetic Moments ◽  
Negative Magnetoresistance ◽  
High Magnetic Fields

We report low-temperature magnetotransport in the normal state of the electron-doped superconductors, Nd 2-x Ce x CuO 4, Pr 2-x Ce x CuO 4, and La 2-x Ce x CuO 4, by suppressing the superconductivity with high magnetic fields. The normal state ρ-T curve shows an up-turn at low temperatures, which has a log T dependence with saturation at lowest temperatures. The up-turn is gradually suppressed with increasing magnetic field, resulting in negative magnetoresistance. We discuss these findings on the basis of the Kondo scattering originating from the magnetic moments of Cu 2+ ions.

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