Anderson Janotti
Materials Department
University of California
Santa Barbara, CA 93106
Phone:(805)893-7499 Fax:(805)893-5029

I am a project scientist in the group of Prof. Chris G. Van de Walle, in the Materials Department and Materials Research Laboratory (MRL) at the University of California, Santa Barbara. My duties include leading the semiconducting oxides research in our group and helping other postdocs and graduate students in our group. I am interested in applying first-principles methods based on Density Functional Theory to study materials properties, their defects, and hydrogen-related phenomena in solids. I am also very interested in the theoretical design of semiconductor materials with targeted band gaps (while my own research in the area is oriented to solid state lighting, I understand that optimal band gaps are also important for solar cells and gamma ray detectors).
.I have a PhD degree in Physics in the area of computational materials science. Since my PhD, I have been applying state of the art first-principles methods based on DFT to understand materials properties. I have extensive experience with pseudopotentials and full-potential linearized augmented planewave methods. From 2000 to 2002, I was a posdoc at the National Renewable Energy Laboratory, working on photovoltaic related materials, including hydrogen in dilute nitride alloys. From 2002 to 2004, I was a research associated at ORNL working on interdiffusion in nickel-based superalloys for high-temperature mechanical applications, transition metal doped ZnO for spintronics, and antiferromagnetic nanoparticles. My research credentials are reflected on publications in important peer-reviewed journals, including Nature Materials and Physical Review Letters, and invited talks at major conferences. I keep strong collaborations with both experimental and other theoretical research groups.
Professional experience
09/2004 - Project Scientist in the group of Prof. Chris G. Van de Walle, Materials Department and Materials Research Laboratory (MRL), University of California Santa Barbara, CA
08/2002-09/2004 Research Associate, Metals & Ceramics Division and Computer Science and Mathematics Division, Oak Ridge National Laboratory (ORNL), Oak Ridge, TN
01/2000-08/2002 Postdoctoral Research Fellow, Basic Sciences Center, National Renewable Energy Laboratory (NREL), Golden, CO
08/1994-12/1999 Graduate Student Researcher, Department of Materials and Mechanics, University of Sao Paulo, SP, Brasil
02/1996-12/1999 Lecturer, Department of Mathematics and Engineering, UniABC, Santo Andre, SP, Brasil, www.uniabc.br
Selected publications
Hydrogen multicentre bonds, A. Janotti and C. G. Van de Walle, Nature Materials, (Advanced online publication)
Oxygen vacancies in ZnO, A. Janotti and C. G. Van de Walle, Applied Physics Letters Vol. 87 pp. 122102 (2005)
Solute diffusion in metals: Larger atoms can move faster , A. Janotti, M. Krcmar, C. L. Fu, and R. C. Reed, Physical Review Letters Vol. 92 085901 (2004)
Effects of hydrogen on the electronic properties of dilute GaAsN alloys , A. Janotti, S. B. Zhang, S.-H. Wei, and C. G. van de Walle, Physical Review Letters Vol. 89 pp. 086403 (2002)
Invited talks
08/2007 - Band alignments at oxide semiconductor interfaces, 11th International Conference on the Formation of Semiconductor Interfaces, Manaus, Amazonas, Brazil
03/2006 - LDA+U applied to oxide and nitride semiconductors, American Physical Society, March Meeting, Baltimore, MD
07/2005 - New insights into the role of native point defects in ZnO, 3rd International Conference on Materials for Advanced Technologies and 9th Conference on Advanced Materials, Suntec, Singapore
04/2004 - Defect physics in III-V dilute nitride alloys: the important role of hydrogen, Materials Research Society Spring Meeting, San Francisco, CA
Grants obtained
2004 - Tailoring Si-based optoelectronics: Epitaxial growth of novel direct band gap semiconductors on Silicon, PIs: R. McKee and A. Janotti, Source: Laboratory Directed Research and Development, ORNL Amount: $125,000.
2004-2005 - Effects of Confinement on the Statistical Physics of Nanoparticles. From Idealized Models to Real Materials: Application to Antiferromagnetic Oxides, PI: G. M. Stocks, Source: Laboratory Directed Research and Development, ORNL Amount: $240,000/year