ANOMALOUS NORMAL STATE PROPERTIES OF UNDERDOPED Bi 2212 THIN FILMS

2004 ◽  
Vol 18 (15) ◽  
pp. 2209-2214
Author(s):  
G. STIUFIUC ◽  
R. STIUFIUC ◽  
E. MACOCIAN ◽  
H. RAFFY ◽  
G. ILONCA
Keyword(s):  
Thin Films ◽  
Temperature Dependence ◽  
Excitation Spectrum ◽  
Normal State ◽  
Characteristic Temperature ◽  
Epitaxial Thin Films ◽  
Normal State Properties ◽  
Upward Curvature ◽  
Significant Change

We investigate the effect of the opening of the pseudogap on the temperature dependence of the in-plane resistivity ρab(T) for Bi 2212 epitaxial thin films having different oxygen contents. Using successive annealing treatments we were able to bring the films from a maximally overdoped state (characterized by a T c of 63 K) to a strongly underdoped state (T c <10 K ). We also observed a significant change in the temperature dependence of the in-plane resistivity ρab(T). This dependence presents two major characteristics: for the overdoped sample we observed an upward curvature from linearity while for underdoped samples we observed a downturn from linearity starting from a characteristic temperature T* which will be associated with the opening of the pseudogap in the excitation spectrum.

Temperature dependence of dielectric functions in Yb2O3 and Lu2O3 epitaxial thin films on sapphire (0001)

2019 ◽  
Vol 59 (SC) ◽  
pp. SCCB13
Author(s):  
Takayuki Makino ◽  
Takaho Asai ◽  
Tomoya Takeuchi ◽  
Kenichi Kaminaga ◽  
Daichi Oka ◽  
...  
Keyword(s):  
Thin Films ◽  
Temperature Dependence ◽  
Epitaxial Thin Films

Transport Phenomena in the Mixed and Normal State of (Bi1.6Pb0.4)Sr2Ca2(Cu1-xFex)3Oy Epitaxial Thin Films

1998 ◽  
Vol 12 (25n26) ◽  
pp. 1081-1088 ◽  
Author(s):  
G. Ilonca ◽  
A. V. Pop ◽  
D. Benea ◽  
C. Lung ◽  
M. Lachescu ◽  
...  
Keyword(s):  
Experimental Data ◽  
Thin Films ◽  
Normal State ◽  
Landau Theory ◽  
Upper Critical Field ◽  
Time Dependent ◽  
Epitaxial Thin Films ◽  
Critical Temperatures ◽  
Seebeck Coefficients ◽  
Hall Effects

We had performed a study on magnetoresistivity, Seebeck, Nernst and Hall effects in the mixed and normal state for Bi2223 thin films in magnetic fields between 0 and 5 T and in the temperature range 5–300 K. The critical temperatures, the Hall concentration, the Nernst and Seebeck coefficients depend strongly on the iron content in the samples. From our experimental data in the mixed state and fluctuation regime, the upper critical field slope (dBc2/dT )=-2:55 T/K was obtained, corresponding to ab-plane coherence length ξab=14 Å. The experimental data are in agreement with the predictions of the time-dependent Ginsburg–Landau theory.

TUNNELING AND RESISTIVE STUDIES OF NORMAL STATE PROPERTIES OF YBCO THIN FILMS

1990 ◽  
Vol 04 (02) ◽  
pp. 111-118 ◽  
Author(s):  
V. M. SVISTUNOV ◽  
A. I. KHACHATUROV ◽  
M. A. BELOGOLOVSKII ◽  
I. V. KOCHERGIN ◽  
Š. BENAČKA ◽  
...  
Keyword(s):  
Thin Films ◽  
Normal State ◽  
Electron Correlations ◽  
Ybco Thin Films ◽  
Normal State Properties

Tunneling and resistive measurements have been performed on high-T c YBCO thin films. Both the effects of electron-electron correlations and those of electron-phonon interactions are found and discussed.

Temperature dependence of magnetic anisotropy of La0.8Ca0.2MnO3 epitaxial thin films

2000 ◽  
Vol 87 (9) ◽  
pp. 6764-6766 ◽  
Author(s):  
M. C. Smoak ◽  
P. A. Ryan ◽  
F. Tsui ◽  
T. K. Nath ◽  
R. A. Rao ◽  
...  
Keyword(s):  
Thin Films ◽  
Magnetic Anisotropy ◽  
Temperature Dependence ◽  
Epitaxial Thin Films

scholarly journals Temperature dependence of three-dimensional domain wall arrangement in ferroelectric K0.9Na0.1NbO3 epitaxial thin films

2020 ◽  
Vol 128 (18) ◽  
pp. 184101
Author(s):  
Martin Schmidbauer ◽  
Laura Bogula ◽  
Bo Wang ◽  
Michael Hanke ◽  
Leonard von Helden ◽  
...  
Keyword(s):  
Thin Films ◽  
Domain Wall ◽  
Temperature Dependence ◽  
Three Dimensional ◽  
Epitaxial Thin Films ◽  
Dimensional Domain

Kinetic Roughening of Fe/Fe(100) Epitaxial Thin Films

1995 ◽  
Vol 399 ◽  
Author(s):  
M.C. Bartelt ◽  
J.W. Evans
Keyword(s):  
Thin Films ◽  
Temperature Dependence ◽  
Nucleation And Growth ◽  
Step Edge ◽  
Epitaxial Thin Films ◽  
Two Dimensional ◽  
Kinetic Roughening ◽  
Adsorption Sites ◽  
Slope Selection ◽  
Model Predictions

ABSTRACTWe model kinetic roughening during Fe(100) homoepitaxy, where the formation of mounds with selected slope has been observed. Our model incorporates irreversible nucleation and growth of two-dimensional square islands in each layer, and a step-edge barrier to diffusive downward transport (which exceeds the barrier, Ed, to terrace diffusion by ESch). We estimate that ESch≈45meV compared with Ed≈450meV. To reproduce observed behavior, it is also essential for the model to incorporate "downward funneling" of depositing atoms to four-fold hollow adsorption sites, as this controls slope selection. Finally, we discuss model predictions for the non-monotonic temperature dependence of kinetic roughening.

Superconducting and normal state properties of niobium-nitride thin films

1988 ◽  
Vol 38 (3) ◽  
pp. 483-485 ◽  
Author(s):  
A Nigro ◽  
G Nobile ◽  
V Palmieri ◽  
G Rubino ◽  
R Vaglio
Keyword(s):  
Thin Films ◽  
Normal State ◽  
Niobium Nitride ◽  
Normal State Properties
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