148 citations · 516 across the 11 of their papers we have counts for
11 papers
Unexpected Giant Microwave Conductivity in a Nominally Silent BiFeO3 Domain Wall
Yen-Lin Huang, Lu Zheng, Peng Chen +10
Nanoelectronic devices based on ferroelectric domain walls (DWs), such as memories, transistors, and rectifiers, have been demonstrated in recent years. Practical high-speed electr…
Visualization of Local Conductance in MoS2/WSe2 Heterostructure Transistors
Di Wu, Wei Li, Amritesh Rai +7
The vertical stacking of van der Waals (vdW) materials introduces a new degree of freedom to the research of two-dimensional (2D) systems. The interlayer coupling strongly influenc…
Microwave Conductivity of Ferroelectric Domains and Domain Walls in Hexagonal Rare-earth Ferrite
Xiaoyu Wu, Kai Du, Lu Zheng +3
We report the nanoscale electrical imaging results in hexagonal single crystals using conductive atomic force microscopy (C-AFM) and scanning microwave impe…
Visualization of Surface-acoustic-wave Potential by Transmission-mode Microwave Impedance Microscopy
Lu Zheng, Di Wu, Xiaoyu Wu +1
Elastic waves propagating in piezoelectric materials are accompanied by a time-varying electric potential, which is of critical importance for acousto-electronic applications. The…
Interferometric Imaging of Nonlocal Electromechanical Power Transduction in Ferroelectric Domains
Lu Zheng, Hui Dong, Xiaoyu Wu +5
The electrical generation and detection of elastic waves are the foundation for acousto-electronic and acousto-optic systems. For surface-acoustic-wave devices, micro-/nano-electro…
Quantitative Measurements of Nanoscale Permittivity and Conductivity Using Tuning-fork-based Microwave Impedance Microscopy
Xiaoyu Wu, Zhenqi Hao, Di Wu +5
We report quantitative measurements of nanoscale permittivity and conductivity using tuning-fork (TF) based microwave impedance microscopy (MIM). The system is operated under the d…
Direct Imaging of Sketched Conductive Nanostructures at the LaAlO3/SrTiO3 Interface
Zhanzhi Jiang, Xiaoyu Wu, Hyungwoo Lee +6
Nanoscale control of the quasi-two-dimensional electron gas at the LaAlO3/SrTiO3 (LAO/STO) interface by a conductive probe tip has triggered the development of a number of electron…
Low-energy Structural Dynamics of Ferroelectric Domain Walls in Hexagonal Rare-earth Manganites
Xiaoyu Wu, Urko Petralanda, Lu Zheng +5
Domain walls (DWs) in ferroic materials, across which the order parameter abruptly changes its orientation, can host emergent properties that are absent in the bulk domains. Using…
Uncovering edge states and electrical inhomogeneity in MoS2 field-effect transistors
Di Wu, Xiao Li, Lan Luan +8
The understanding of various types of disorders in atomically thin transition metal dichalcogenides (TMDs), including dangling bonds at the edges, chalcogen deficiencies in the bul…
Thickness-dependent Dielectric Constant of Few-layer In2Se3 Nano-flakes
Di Wu, Alexander J. Pak, Yingnan Liu +10
The dielectric constant or relative permittivity of a dielectric material, which describes how the net electric field in the medium is reduced with respect to the external field, i…
Direct Imaging of Nanoscale Conductance Evolution in Ion-Gel-Gated Oxide Transistors
Yuan Ren, Hongtao Yuan, Xiaoyu Wu +5
Electrostatic modification of functional materials by electrolytic gating has demonstrated a remarkably wide range of density modulation, a condition crucial for developing novel e…