Electric Field Effect in High-Tc Superconductors, Evaluation of Field-Induced Superconductivity and Device Applications

1992 ◽  
Vol 275 ◽  
Author(s):  
J. Mannhart ◽  
A. Kleinsasser
Keyword(s):  
Electric Fields ◽  
Field Effect ◽  
Electric Field Effect ◽  
Performance Limits ◽  
High Tc Superconductors ◽  
Normal State Resistivity ◽  
High Tc ◽  
The Past ◽  
Field Effect Devices ◽  
Device Applications

ABSTRACTIn the past two years, it has been demonstrated that applied electric fields can be used to modulate significantly the normal state resistivity, the critical temperature and the critical current density of high-Tc films. Whereas earlier publications focussed on experimental aspects of high-Tc field effects, this contribution will discuss the conditions that are required to induce superconductivity on the surface of insulators. In addition, evaluations for performance limits of potential high-Tc field effect devices will be presented.

Electric field effect on excess conductivity in high-Tc superconductors

1994 ◽  
Vol 235-240 ◽  
pp. 2631-2632 ◽  
Author(s):  
V.S. Lysenko ◽  
Y.V. Gomeniuk ◽  
V.Z. Lozovski ◽  
I.P. Tyagulski ◽  
V.N. Varyukhin
Keyword(s):  
Electric Field ◽  
Field Effect ◽  
Excess Conductivity ◽  
Electric Field Effect ◽  
High Tc Superconductors ◽  
High Tc

CHAIN OXYGEN DYNAMICS IN YBa2Cu3O7−δ UNDER APPLIED ELECTRIC FIELDS AND RELATED PHENOMENA

1994 ◽  
Vol 08 (30) ◽  
pp. 1863-1888 ◽  
Author(s):  
N. CHANDRASEKHAR ◽  
ORIOL T. VALLS ◽  
A.M. GOLDMAN
Keyword(s):  
Electric Fields ◽  
Field Effect ◽  
Carrier Transport ◽  
Cuprate Superconductors ◽  
Physical Property ◽  
Verwey Transition ◽  
Field Effect Devices ◽  
Device Applications ◽  
Oxygen Dynamics ◽  
Qualitative Discussion

Three-terminal field effect devices are widespread in modern electronics due to their versatility. The possibility of tuning superconductivity, using electric fields to modulate carrier transport is of great interest. With the high temperature cuprate superconductors, which have fairly low carrier concentrations in comparison to metals, this would permit the study of properties in a systematic manner instead of relying on the stochastic nature of oxygen doping. Demonstrations of the phenomenon in YBa 2 Cu 3 O 7−δ have been analysed in terms of the conventional metal field effect. In this work, we show that contrary to earlier belief, the field effect in YBa 2 Cu 3 O 7−δ arises due to changes in the structure. The mechanism is one of ordering induced doping, and is not novel to this oxide, with Fe3O4 exhibiting a similar phenomenon, termed the Verwey transition. Our explanations and results are found to be consistent with experiments, both in terms of the magnitudes of the effects observed as well as their time scales. Also, explicit predictions of this model have recently been confirmed experimentally. Since the effect is omnipresent during the measurement of any physical property in this material, we present a qualitative discussion of its connotations for transport, tunneling, and magnetization. The phenomenon is of importance in a wide variety of device applications.

Electric field effect in high-Tc superconductors

1993 ◽  
Vol 195 ◽  
pp. 519-525 ◽  
Author(s):  
J. Mannhart ◽  
J.G. Bednorz ◽  
K.A. Müller ◽  
D.G. Schlom ◽  
J. Ströbel
Keyword(s):  
Electric Field ◽  
Field Effect ◽  
Electric Field Effect ◽  
High Tc Superconductors ◽  
High Tc

scholarly journals Multilayers for high-Tc superconducting electric field effect devices

1993 ◽  
Vol 195 ◽  
pp. 723-726 ◽  
Author(s):  
K. Joosse ◽  
Yu.M. Boguslavskij ◽  
G.J. Gerritsma ◽  
H. Rogalla
Keyword(s):  
Electric Field ◽  
Field Effect ◽  
Electric Field Effect ◽  
High Tc ◽  
Field Effect Devices

scholarly journals Infrared conductivity of hole accumulation and depletion layers in (Ga,Mn)As- and (Ga,Be)As-based electric field-effect devices

2012 ◽  
Vol 86 (16) ◽  
Author(s):  
B. C. Chapler ◽  
S. Mack ◽  
L. Ju ◽  
T. W. Elson ◽  
B. W. Boudouris ◽  
...  
Keyword(s):  
Electric Field ◽  
Field Effect ◽  
Electric Field Effect ◽  
Field Effect Devices

scholarly journals Electric-field effect devices made of YBa2Cu3O7−x/SrTiO3 epitaxial multilayers

1994 ◽  
Vol 224 (1-2) ◽  
pp. 179-184 ◽  
Author(s):  
K. Joosse ◽  
Yu.M. Boguslavskij ◽  
G.J. Gerritsma ◽  
H. Rogalla ◽  
J.G. Wen ◽  
...  
Keyword(s):  
Electric Field ◽  
Field Effect ◽  
Electric Field Effect ◽  
Field Effect Devices ◽  
Epitaxial Multilayers

scholarly journals Vibration Damping of a New Ionic Liquid under Electric Field Effect

10.14311/714 ◽  
2005 ◽  
Vol 45 (3) ◽  
Author(s):  
M. M. A. Bicak ◽  
H. T. Belek ◽  
A. Göksenli
Keyword(s):  
Electrical Conductivity ◽  
Ionic Liquid ◽  
Electric Fields ◽  
Smart Materials ◽  
Field Effect ◽  
Rheological Behaviour ◽  
Vibration Damping ◽  
Electric Field Effect ◽  
High Electrical Conductivity ◽  
Electrical Fields

Ionic liquids are recently-developed smart materials that are not well known by mechanical engineers. They are of great interest due to their non-volatility, viscosity and extremely high electrical conductivity. Up to now, no reports have appeared on their rheological properties under magnetic or electrical fields. In this work, we study the electro-rheological behaviour of a newly presented ionic liquid (2-hydroxyethylammonium formate). Our experiments show that the ionic liquid is not sensitive to magnetic fields. Nevertheless, resonably high damping ratios (42.8%) have been attained under relatively low electric fields (0.6 kVcm-1).

JOSEPHSON COUPLING STRENGTHS AND OVERLAPPING OF DIMENSIONS IN THE CROSSOVER REGION IN IRRADIATED MULTIPERIODIC HIGH-Tc SUPERCONDUCTORS

2000 ◽  
Vol 14 (12) ◽  
pp. 423-436
Author(s):  
A. K. GHOSH ◽  
A. N. BASU
Keyword(s):  
Structural Modification ◽  
Josephson Coupling ◽  
Dimensional Crossover ◽  
High Tc Superconductors ◽  
Crossover Region ◽  
Normal State Resistivity ◽  
High Tc ◽  
Breaking Parameter ◽  
Coupling Strengths ◽  
Α Particles

We have bombarded (Bi,Pb)-2223 superconductors with 40 MeV α-particles to study the effect of irradiation on the dimensional crossover in fluctuation-induced conductivity. The pair-breaking parameter decreases with the irradiation and suppression of the critical temperature is obtained. The structural modification of the layer in the high-T c superconductors induced by irradiation affects the extent of the overlapping region in the process of dimensional crossover. The width of the overlapping regime is evaluated for the various doses of irradiation using the different possible relations for the normal state resistivity. The variation of the transition width (Δ T0) with the increase in dose of irradiation is discussed in terms of modifications of interlayer and intralayer Josephson coupling strengths.

Sign in / Sign up

Export Citation Format

Share Document