IEEE MagSoc NC Chapter Special Seminar and NCSU Special Topic Seminar - Prof. Prof. Laurent Bellaiche, University of Arkansas
IEEE MagSoc NC Chapter Special Seminar and NCSU Special Topic Seminar - Prof. Prof. Laurent Bellaiche, University of Arkansas
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- 911 Partners Way, EB1 Room 3018
- NC State University, Materials Science and Engineering
- Raleigh, North Carolina
- United States
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Developing Novel Ab-Initio Methods to Understand and Design Complex Ferroelectrics Systems
Abstract
In the 1990’s, first-principles-based methods began to be commonly used and/or developed to investigate simple ferroelectrics such as BaTiO3 or PbTiO3. Since then, these schemes have been generalized to understand much more complex systems and phenomena and even to predict striking features that were then experimentally confirmed. However, several current issues in the world of ferroelectrics would still require the development of novel ab-initio schemes to gain a deeper insight into them. This includes:
§ Moiré patterns recently observed in twisted BaTiO3 layers
§ Electro-optic and elasto-optic responses at finite temperature, in low-dimensional systems, and/or in the THz regime
§ The experimental discovery that some III-V nitride semiconductors, such as (Al,Sc)N solid solutions, are ferroelectric
The aim of this Talk is to discuss the recent development and use of several novel first-principles approaches that allow us to tackle all these issues, providing an unprecedented insight into them along with new predictions to be experimentally checked.
Biography:
Laurent Bellaiche is a Distinguished Professor in the Department of Physics and in the Institute for Nanoscience and Engineering at the University of Arkansas. He is also the Twenty-First Century Endowed Professor in Optics, Nanoscience and Science Education at the University of Arkansas since July 2006, and a Scientific Associate Investigator of the Australian FLEET center (ARC Centre of Excellence in Future Low-Energy Electronics Technologies) since 2019.
His group co-authored over 400 peer-reviewed journal articles which have been cited over 29,000 times. He received several awards including the Ralph Powe Junior Faculty Enhancement Award from ORAU in 1999, the CAREER award from the National Science Foundation (2000), and the Alumni Association’s 2009 Faculty Distinguished Achievement Award in Research. He has been elected a fellow of the American Physical Society in 2011, and of the Arkansas Research Alliance (ARA) in 2017. He was named a SEC Faculty Achievement Award recipient in 2019 and received the Vannevar Bush Faculty Fellowship (VBFF) from the Department of Defense in 2020.
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