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NTU CCMS Research Team’s breakthrough in
Oxide-Interfacial Charges published in Nature Communications

A research led by National Taiwan University’s Center of Condensed Matter Sciences (CCMS) published its latest breakthrough on one-dimensional oxide-interfacial charges in the internationally acclaimed scientific journal, Nature Communications. Led by Ming-Wen Chu (朱明文) and Jauyn Grace Lin (林昭吟), the study discovered that one-dimensional electrons occur from a misfit dislocation defect in two-dimensional interfacial charges. The paper, entitled “Condensation of Two-Dimensional Oxide-Interfacial Charges into One-Dimensional Electron Chains by the Misfit-Dislocation Strain Field” was accepted for publication on April 14 and is the first in its field to make such a discovery.

The achievements made in the study of of semiconductor technology are some of the most significant scientific breakthroughs in the 20th century. Ranging from semiconductor transistors and nano-integrated circuits, the technology of semiconductor interface has been extensively applied to electronic appliances and has had a widespread effect on our everyday lives. This success is attributed to the fact that, for the past 60 years, scientists have developed a controlled understanding of how strains and defects impact two-dimensional interfacial charges in semiconductor technology.

Nevertheless, in 2002, the accidental discovery of the same interfacial charges in oxide-interfacial charges opened new grounds for research on oxide interface in the field of condensed matter science. As a result, oxide electronics soon became the core subject in condensed matter physics, with imperative priority being placed into the understanding of how strains and crystal defects impact two-dimensional oxide-interfacial charges.

As a result, NTU’s research showing two-dimensional-to-one-dimensional electronic condensation represents a novel electronic-inhomogeneity mechanism at oxide interfaces. In addition, its findings serve as a stimulation for further studies of one-dimensional electron density in oxide heterostructures.

The study was a combination of collaborative efforts from NTU, including CCMS research fellow Jauyn Grace Lin (林昭吟), PhD student Shu-Ling Chen (鄭淑齡), and Professor Jer-Ren Yang (楊哲人) from the Department of Materials Science and Engineering. Initially launched by former CCMS director, Professor Cheng-Hsuan Chen (陳正弦), associate research fellow Ming-Wen Chu (朱明文) took on the project whereas PhD student Chin-Ping Chang (張景斌) served as first author of the research paper.

Click HERE to read more about the study written by the Center of Condensed Matter Sciences (2014/04/23), or access the original paper HERE.

Chinese version