Electric Field Effect Observed on Current-Voltage Curve of YBa2Cu3O7-delta Nano-Channel with Laterally Placed Gate Electrode

A detailed quantitative investigation of the current–voltage (I–V) relationship under the low and the high electric field in the La 0.8 Ca 0.2 MnO 3/ PbZr 0.2 Ti 0.8 O 3/ Si heterostructure over a wide range of temperature was performed. The effective mobility and carrier concentration were then calculated through the electric field effect theory. The differential mobility can be modulated and enhanced significantly by the gate voltage in the vicinity of the metal–insulator-transition temperature. The carrier concentration is proportional to the applied gate voltage. At the room temperature the carrier concentration is found to be 2.5 × 10-9 under 10 V bias and remains almost unchanged at different temperatures.

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Role of Enthalpy and Relative Electric Permittivity in Electric Field Induced Nucleation

MRS Proceedings ◽

10.1557/opl.2012.1405 ◽

2012 ◽

Vol 1431 ◽

Author(s):

K. Kohary ◽

J. Vazquez-Diosdado ◽

P. Ashwin ◽

C. D. Wright

Keyword(s):

Electric Field ◽

Dominant Role ◽

Switching Behavior ◽

Electric Permittivity ◽

Voltage Curve ◽

Current Voltage ◽

Nucleation Model ◽

Current Voltage Curve ◽

Kinetics Of

ABSTRACTEmerging phase-change electrical memory technologies rely on the fast amorphous to crystalline transition, which is usually characterized by an ‘S-shape’ current-voltage curve. We investigate the possibility that electric field induced nucleation may play a dominant role in defining this characteristic electrical switching behavior. We derive quantitative crystallization maps to study the kinetics of the amorphous to crystalline transition in the presence of electric field contribution to the free energy and we investigate how the prediction of the electric field induced nucleation model is affected by material properties such as enthalpy and relative electric permittivity.

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Electric Field-Dependence of Double Layer Capacitances by Current-Controlled Charge-Discharge Steps

Electrochem ◽

10.3390/electrochem1020015 ◽

2020 ◽

Vol 1 (2) ◽

pp. 217-225 ◽

Cited By ~ 1

Author(s):

Ridong He ◽

Koichi Jeremiah Aoki ◽

Jingyuan Chen

Keyword(s):

Electric Field ◽

Time Dependence ◽

Field Dependence ◽

Double Layer ◽

Field Effect ◽

Current Control ◽

Electric Field Effect ◽

Super Capacitor ◽

Electric Field Dependence ◽

Voltage Curve

Voltage vs. time curves of double layer capacitances (DLCs) by current-controlled charge and discharge steps have been recognized to be composed of triangular waves. They are deviated slightly from triangles from the viewpoint of the time dependence or the constant phase element of the DLC. In order to evaluate the deviation, we measured DLCs of a platinum (Pt) electrode in KCl solution by current-control. Each time-voltage curve was convex rather a line, and was followed by the power law. Even if the time dependence was subtracted from each curve, the enhancement of the DLC was noticeable with an increase in the time well as the voltage. It can be attributed to the electric field effect, in which dipoles of solvents are oriented on an electrode so strongly that the DLC may be increased. The field dependence can be justified with the kinetic theory of interacting dipoles of solvents on an electrode through the observed linearity of the logarithmic DLC with the net voltage. This concept was applied to a commercially available super-capacitor to demonstrate a significant contribution of the field effect.

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