Controllable electrical conduction at complex oxide interfaces

Tra, Vu Thanh; Yang, Jinn‐Chuang; Hsieh, Y. H.; Lin, Jiunn Yuan; Chen, Yi Chun; Chu, Ying Hao

doi:10.1002/pssr.201409156

Cited by 11 publications

(9 citation statements)

References 116 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The KFM image confirmed the negative surface potential at the poled region. In a review article, Tra et al summarized the electrical conduction at lateral heterostructures and vertical nanocomposites …”

Section: Functionality Tuning Driven By Strain Defect and Interfacementioning

confidence: 99%

Metal Oxide Nanocomposites: A Perspective from Strain, Defect, and Interface

et al. 2018

View full text Add to dashboard Cite

Complex metal oxides, which show a variety of functional properties such as ferromagnetism, ferroelectricity, multi-ferroelectricity, superconductivity, and ionic conduction, have attracted much attention in the past decades. These exotic physical properties arise from a complex hierarchy of competing interactions among spin, charge, orbital, and lattice degrees of freedom. The development of advanced characterization techniques such as electron microscopy, neutron scattering, synchrotron scattering and imaging, spectroscopy at high magnetic fields, and others has enabled us to study the interactions among these degrees of freedom coupled with strain, defect, and interface Vertically aligned nanocomposite thin films with ordered two phases, grown epitaxially on substrates, have attracted tremendous interest in the past decade. These unique nanostructured composite thin films with large vertical interfacial area, controllable vertical lattice strain, and defects provide an intriguing playground, allowing for the manipulation of a variety of functional properties of the materials via the interplay among strain, defect, and interface. This field has evolved from basic growth and characterization to functionality tuning as well as potential applications in energy conversion and information technology. Here, the remarkable progress achieved in vertically aligned nanocomposite thin films from a perspective of tuning functionalities through control of strain, defect, and interface is summarized. Thin FilmsThe ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/adma.201803241. 12 11 12where c 11 and c 12 are elastic moduli of the film material. Epitaxial strain gradually changes with film thickness in perovskite manganites. Figure 3 shows reciprocal space mapping or RSM (103) of La 0.7 Ca 0.3 MnO 3 (LCMO) films on STO (001) substrates. It captures the gradual strain relaxation process with increasing film thickness in manganite thin films. When the film is very thin, the interface is coherent with

show abstract

Section: Functionality Tuning Driven By Strain Defect and Interfacementioning

confidence: 99%

Metal Oxide Nanocomposites: A Perspective from Strain, Defect, and Interface

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Very high ferroelectric Curie temperatures, 2 strongly improved dielectric tunability, 3 reducing dielectric loss, 4 enhanced multiferroic coupling, 5 photostriction-magnetic coupling, 6 strongly enhanced current densities in superconductors, 7 new kinds of memristor devices, 8 and strongly enhanced ionic conduction at lower temperatures have all been reported. 9,10 However, the understanding and origin of unusual strain states in nanocomposite films have not been explored to date. On the other hand, strain is critical to tuning the properties of strongly correlated metal oxide films where bond lengths and angles strongly influence the wide-ranging functional phenomena.…”

mentioning

confidence: 99%

New strain states and radical property tuning of metal oxides using a nanocomposite thin film approach

et al. 2015

View full text Add to dashboard Cite

“…On the other hand, magnetic ordering happens at the interface of materials that are nonmagnetic in the bulk [11]. Because of strong polarization and charge transfer, such interfaces can even be conducting [12] and superconducting [13]. This shows that ultrathin films and the interfaces of these materials are of ever-increasing interest.…”

Section: Introductionmentioning

confidence: 99%

Structural, Dielectric, and Interface Properties of Crystalline Barium Silicate Films on Si(100): A Robust High-κMaterial

et al. 2016

View full text Add to dashboard Cite

The quality and crystallinity of ultrathin dielectric layers depend crucially on the details of interface formation and chemical stability. Using a combination of photoelectron (XPS) and electron-energy-loss spectroscopy, low-energy electron-diffraction, and transmission electron microscopy (TEM), we show that crystalline epitaxial layers of Ba 2 SiO 4 can be grown on Si(100) substrates from evaporated Ba in oxygen background atmosphere at 650°C. Since the silicate is chemically by far more stable than the oxides of Si and Ba, an atomically sharp interface with no interface oxide is formed, as confirmed by XPS and TEM. However, the interface is rough on the atomic scale. dc and frequency-dependent electrical measurements reveal a relative dielectric constant of 22.8, low hysteresis in CV measurements, and low leakage currents but still fairly high interface trap densities.

show abstract

Controllable electrical conduction at complex oxide interfaces

Cited by 11 publications

References 116 publications

Metal Oxide Nanocomposites: A Perspective from Strain, Defect, and Interface

Metal Oxide Nanocomposites: A Perspective from Strain, Defect, and Interface

New strain states and radical property tuning of metal oxides using a nanocomposite thin film approach

Structural, Dielectric, and Interface Properties of Crystalline Barium Silicate Films on Si(100): A Robust High-κMaterial

Contact Info

Product

Resources

About