ANOMALOUS BEHAVIORS OF NON-RESONANT MICROWAVE ABSORPTIONS OF SUPERCONDUCTORS

2000 ◽  
Vol 14 (16) ◽  
pp. 1633-1650
Author(s):  
K. SUGAWARA ◽  
N. ARAI ◽  
A. KOUZUKI ◽  
S. ICHIMURA ◽  
H. NAOI ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Thin Films ◽  
Applied Magnetic Field ◽  
Microwave Power ◽  
Superconducting Thin Films ◽  
Modulation Amplitude ◽  
Directional Effect ◽  
System A ◽  
Powder Samples ◽  
Preliminary Study

The non-resonant microwave absorption (NRMA) measurements have been intensively performed for superconducting thin films of YBa 2 Cu 3 O y fabricated on MgO (100) substrates and powder samples of LaSrCuO systems. In order to complement the study, we also review the NRMA of BiSrCaCuO system. A particular attention has been paid to the following phenomena: (i) phases, (ii) effect of current, (iii) directional effect of applied magnetic field, (iv) hysteresis, (v) microwave power absorbed as a function of magnetic field, (vi) linewidth in the vicinity of T c , and (vii) modulation amplitude effect. A preliminary study on ( La 0.98 Dy 0.02)1.85 Sr 0.15 CuO 4 was also reported.

scholarly journals nanoSQUID operation using kinetic rather than magnetic induction

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Adam N. McCaughan ◽  
Qingyuan Zhao ◽  
Karl K. Berggren
Keyword(s):  
Magnetic Field ◽  
Thin Films ◽  
Applied Magnetic Field ◽  
Magnetic Induction ◽  
Quantization Condition ◽  
Kinetic Inductance ◽  
Superconducting Thin Films ◽  
Magnetic Inductance ◽  
Measurement Results ◽  
Superconducting Loop

Abstract We report on a method of nanoSQUID modulation which uses kinetic inductance rather than magnetic inductance to manip-ulate the internal fluxoid state. We produced modulation using injected current rather than an applied magnetic field. Using this injected current, we were able to observe the triangle-wave shaped modulation of the device critical current which was periodic according to the London fluxoid quantization condition. The measurement results also confirmed that the fluxoid state inside a superconducting loop can be manipulated using primarily kinetic inductance. By using primarily kinetic inductance rather than magnetic inductance, the size of the coupling inductor was reduced by a factor of 10. As a result, this approach may provide a means to reduce the size of SQUID-based superconducting electronics. Additionally, this method provides a convenient way to perform kinetic inductance characterizations of superconducting thin films.

STRIPES, PSEUDOGAP AND SC-SDW RESONANCE IN HTSC PEROVSKITES

2000 ◽  
Vol 14 (29n31) ◽  
pp. 3577-3583 ◽  
Author(s):  
L. S. MAZOV
Keyword(s):  
Magnetic Field ◽  
Spin Density ◽  
Applied Magnetic Field ◽  
Density Wave ◽  
Spin Density Wave ◽  
Modulation Amplitude ◽  
Dynamic Nature ◽  
Crystalline Film ◽  
Single Crystalline Film

The significant role of spin stripes in HTSC system is emphasized. The evidence for spin density wave (SDW) nature of pseudogap is presented. The dependence of CuO2 lattice modulation amplitude on the temperature and applied magnetic field is studied. The indication to possible SDW-SC resonance is obtained. The possible amplification of Tc with using of artificial magnetic stripes with taking into account their dynamic nature is proposed. An example of twofold amplification of Tc in thin single-crystalline film of La-based cuprate is presented.

scholarly journals Preparation of Bi-based Superconducting Thin Films by RF Magnetron Sputtering under Magnetic Field

Shinku ◽  
2004 ◽  
Vol 47 (3) ◽  
pp. 194-196
Author(s):  
Naoki FUJIWARA ◽  
Takahiro ONISHI ◽  
Kouji KATSURAHARA ◽  
Satoru KISHIDA
Keyword(s):  
Magnetic Field ◽  
Thin Films ◽  
Magnetron Sputtering ◽  
Rf Magnetron Sputtering ◽  
Superconducting Thin Films

Upper Critical Field and Irreversibility Line in Bi2Sr2CuO6+δ/CaCuO2 Superconducting Superlattices Obtained by MBE

2000 ◽  
Vol 14 (25n27) ◽  
pp. 2767-2772
Author(s):  
Matteo Salvato ◽  
Carmine Attanasio ◽  
Gerardina Carbone ◽  
Rosalba Fittipaldi ◽  
Tiziana Di Luccio ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Experimental Data ◽  
Thin Films ◽  
Phase Diagrams ◽  
Applied Magnetic Field ◽  
Three Dimensional ◽  
Upper Critical Field ◽  
Resistivity Measurements ◽  
T Phase ◽  
The Magnetic Field

Resistivity measurements in external applied magnetic field up to 8.5T have been performed on Bi2Sr2CuO6+δ/CaCuO2 superconducting superlattices obtained by MBE. The magnetic field (H) vs. temperature (T) phase diagrams have been determined and the experimental data have been compared with that obtained in the case of Bi2Sr2CuO6+δ thin films deposited with the same technique. A reduction of the anisotropy has been obtained in the case of the superlattices with respect to the case of Bi2Sr2CuO6+δ thin films and a three dimensional behavior has been observed by paraconductivity measurements.

Voltage noise behavior in highly textured YBa2Cu3O7-δ thin films under the applied magnetic field

2000 ◽  
Vol 341-348 ◽  
pp. 1223-1224
Author(s):  
A. Taoufik ◽  
A. Tirbiyine ◽  
S. Senoussi ◽  
A. Ramzi
Keyword(s):  
Magnetic Field ◽  
Thin Films ◽  
Applied Magnetic Field ◽  
Voltage Noise

Characterization of Superconducting Thin Films and nanoSQUIDs for Nanoparticle Investigation at High Magnetic Field

2016 ◽  
Vol 26 (3) ◽  
pp. 1-5 ◽  
Author(s):  
R. Russo ◽  
E. Di Gennaro ◽  
E. Esposito ◽  
A. Crescitelli ◽  
D. Fiorani ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Thin Films ◽  
High Magnetic Field ◽  
Superconducting Thin Films
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