Premium
Resistor Network Modeling of Conductive Domain Walls in Lithium Niobate
Author(s) -
Wolba Benjamin,
Seidel Jan,
Cazorla Claudio,
Godau Christian,
Haußmann Alexander,
Eng Lukas M.
Publication year - 2018
Publication title -
advanced electronic materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.25
H-Index - 56
ISSN - 2199-160X
DOI - 10.1002/aelm.201700242
Subject(s) - resistor , materials science , lithium niobate , electrical conductor , domain (mathematical analysis) , boundary (topology) , conductivity , ohmic contact , domain wall (magnetism) , planar , conductor , optoelectronics , nanotechnology , computer science , composite material , physics , voltage , layer (electronics) , mathematical analysis , mathematics , magnetization , quantum mechanics , magnetic field , computer graphics (images)
Here the concept of a 2D resistor network (2D RN) is applied in order to model the electrical conductivity along sheet‐like domain walls (DWs) in single crystalline lithium niobate (sc‐LNO). The only input to the RN modeling approach is the DW inclination angle distribution, as measured previously with respect to the polar c ‐axis. The simulations then show that a 2D network of Ohmic resistors not only adequately accounts for the different boundary conditions envisaged in experiments, but equally well provides a direct link between the local domain wall conductivity (DWC) and the DW inclination angle α. Moreover, the RN simulations can be directly compared to local‐scale transport measurements, as obtained by scanning probe techniques. The conceptual simplicity and the low computational effort make the present RN modeling approach a useful tool for both the advanced interpretation and evaluation of potential DWC ferroelectrics.