scholarly journals Doping dependence of Hall coefficient and evolution of coherent electronic state in the normal state of the Fe-based superconductor Ba1−xKxFe2As2

2012 ◽  
Vol 85 (6) ◽  
Author(s):  
Kenya Ohgushi ◽  
Yoko Kiuchi
Keyword(s):  
Electronic State ◽  
Hall Coefficient ◽  
Normal State ◽  
Doping Dependence

LOW-TEMPERATURE NORMAL-STATE HALL EFFECT IN HIGH-TcBi2Sr2-xLaxCuO6+δ REVEALED BY 60 T MAGNETIC FIELDS

2002 ◽  
Vol 16 (20n22) ◽  
pp. 3171-3174
Author(s):  
F. F. BALAKIREV ◽  
J. B. BETTS ◽  
G. S. BOEBINGER ◽  
S. ONO ◽  
Y. ANDO ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Low Temperature ◽  
Carrier Concentration ◽  
Hall Coefficient ◽  
Normal State ◽  
Ground State ◽  
Low Temperatures ◽  
Optimal Doping ◽  
Underdoped Sample ◽  
Additional Support

We report low-temperature Hall coefficient in the normal state of the high-Tc superconductor Bi 2 Sr 2-x La x CuO 6+δ. The Hall coefficient was measured down to 0.5 K by suppressing superconductivity with a 60 T pulsed magnetic field. The carrier concentration was varied from overdoped to underdoped regimes by partially substituting Sr with La in a set of five samples. The observed saturation of the Hall coefficient at low temperatures suggests the ability to extract the carrier concentration of each sample. The most underdoped sample exhibits a diverging Hall coefficient at low temperatures, consistent with a depletion of carriers in the insulating ground state. The Hall number exhibits a sharp peak providing additional support for the existence of a phase boundary at the optimal doping.

THE NORMAL STATE HALL EFFECT IN NdBa2-xLaxCu3O7-δ: EVIDENCE FOR HOLE LOCALIZATION BY LA DOPING

2009 ◽  
Vol 23 (31) ◽  
pp. 5779-5788
Author(s):  
S. R. GHORBANI ◽  
F. ABRINAEY
Keyword(s):  
Critical Temperature ◽  
Hall Effect ◽  
Hall Coefficient ◽  
Normal State ◽  
Doping Concentration ◽  
Narrow Band ◽  
Band Model ◽  
Measured Temperature ◽  
Temperature Range ◽  
La Doping

The transport properties of sintered samples of NdBa 2-x La x Cu 3 O 7-δ with 0 ≤ x ≤ 0.3 have been studied in the normal state by Hall effect measurements. The Hall coefficient, RH is positive in the normal state and increases with increasing La doping concentration over the whole temperature range from the critical temperature, Tc, up to room temperature. The results for the Hall coefficient as a function of temperature and doping concentration were analyzed within the phenomenological narrow band and Anderson models. A good agreement between models and data was obtained. As in the phenomenological narrow band model, the band widths increase with increasing doping concentration. As in the Anderson model, the Hall angle is proportional to T2 over the whole measured temperature range for all samples. The obtained results for both models supported the view that La doping introduces electronic disorder into the CuO 2 planes. The tendency towards localization is driven by electronic disorder. In addition to hole filling, the localization is another reason for the decreasing superconducting critical temperature in these samples.

scholarly journals Normal-state magnetic properties of Ni and Zn substituted in YBa 2 Cu 3 O 6 + x : Hole-doping dependence

1999 ◽  
Vol 46 (5) ◽  
pp. 678-684 ◽  
Author(s):  
P Mendels ◽  
J Bobroff ◽  
G Collin ◽  
H Alloul ◽  
M Gabay ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Normal State ◽  
Hole Doping ◽  
Doping Dependence

scholarly journals High-Tc Superconductors: Evidence on the Electron?Phonon Interaction from Transport Measurements

1988 ◽  
Vol 41 (4) ◽  
pp. 597 ◽  
Author(s):  
AB Kaiser ◽  
C Uher
Keyword(s):  
Thermal Conductivity ◽  
Transition Temperature ◽  
Transport Properties ◽  
Hall Coefficient ◽  
Electronic Transport ◽  
Normal State ◽  
High Tc Superconductors ◽  
Phonon Interaction ◽  
High Tc ◽  
Electron Phonon Interaction

We discuss the interpretation of measurements of thermal conductivity, thermopower, Hall coefficient, resistivity and mapetorcsistance in hiJh-temperaturc superconductors. The thermal conductivity of YBa2 Cu3 07 shows an increase below the transition temperature 7;:, demonstrating the importance of the electron-phonon interaction in reducing the phonon current in the normal state. Many features of resistivity and thermopower can be interpreted in terms of conventional metallic models, although morc exotic interpretations have been proposed. We show how measurements on morc disordered samples should help resolve controversy regarding the interpretation of the electronic transport properties.

scholarly journals Temperature and doping dependence of normal state spectral properties in a two-orbital model for ferropnictides

2016 ◽  
Vol 380 (18-19) ◽  
pp. 1648-1657
Author(s):  
J.D. Querales Flores ◽  
C.I. Ventura ◽  
R. Citro ◽  
J.J. Rodríguez-Núñez
Keyword(s):  
Normal State ◽  
Spectral Properties ◽  
Doping Dependence

Doping dependence of the 43Ca Knight shift in the normal state of superconducting (La1−xCax)(Ba1.75−xLa0.25+x)Cu3Oy

2004 ◽  
Vol 408-410 ◽  
pp. 826-827 ◽  
Author(s):  
Sébastien Marchand ◽  
Arlette Trokiner ◽  
Andrey Yakubovsky ◽  
Arkady Knizhnik ◽  
Yakov Eckstein
Keyword(s):  
Normal State ◽  
Knight Shift ◽  
Doping Dependence

scholarly journals Systematic Study on Fluorine-Doping Dependence of Superconducting and Normal State Properties in LaFePO1-xFx

2009 ◽  
Vol 78 (11) ◽  
pp. 114712 ◽  
Author(s):  
Shinnosuke Suzuki ◽  
Shigeki Miyasaka ◽  
Setsuko Tajima ◽  
Takanori Kida ◽  
Masayuki Hagiwara
Keyword(s):  
Systematic Study ◽  
Normal State ◽  
Fluorine Doping ◽  
Doping Dependence ◽  
Normal State Properties
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