Atomic Scale Epitaxy

Homepage: http://recfi.snu.ac.kr/

[Group Introduction]

The Atomic-Scale Epitaxy Group, led by Prof. Tae Won Noh, is the first group to be established within the IBS Center for Correlated Electron Systems. Our research group studies the physics of strongly correlated electron systems, focusing on the state-of-the-art epitaxial synthesis of transition-metal-oxide thin films. The atomic-scale fabrication of artificial heterostructures enables us to create arrangements that do not exist in bulk materials, providing new settings for the study of emergent phenomena.

We aim to obtain a comprehensive understanding of these artificial systems with the aid of numerous spectroscopy methods; including optical, terahertz pump-probe, and angle-resolved photoemission spectroscopy, as well as utilizing scanning probe microscopy. Unraveling the underlying mechanisms of strong correlation phenomena, and their possible manipulation may pave the way toward new functional devices for future practical applications, with the possibility of overcoming the current limitations of semiconductor electronics.

Selected Publications

  • Daesu Lee, Byung Chul Jeon, Aram Yoon, Yeong Jae Shin, Myang Hwan Lee, Tae Kwon Song, Sang Don Bu, Miyoung Kim, Jin-Seok Chung, Jong-Gul Yoon, and Tae Won Noh, Flexoelectric Control of Defect Formation in Ferroelectric Epitaxial Thin Films, Advanced Materials 26, 5005-5011 (2014)
  • Da Woon Jeong, Woo Seok Choi, Satoshi Okamoto, Jae?Young Kim, Kyung Wan Kim, Soon Jae Moon, Deok?Yong Cho, Ho Nyung Lee and Tae Won Noh, Dimensionality Control of d-orbital Occupation in Oxide Superlattices, Scientific Reports 4, 6124 (2014)
  • Byung Chul Jeon, Daesu Lee, Myang Hwan Lee, Sang Mo Yang, Seung Chul Chae, Tae Kwon Song, Sang Don Bu, Jin-Seok Chung, Jong-Gul Yoon, and Tae Won Noh, Flexoelectric Effect in the Reversal of Self-Polarization and Associated Changes in the Electronic Functional Properties of BiFeO3 Thin Films, Advanced Materials 39, 5643 (2013).
  • D. W. Jeong, Hong Chul Choi, Choong H. Kim, Seo Hyoung Chang, C. H. Sohn, H. J. Park, T. D. Kang, Deok-Yong Cho, S.H. Baek, C. B. Eom, J. H. Shim, J. Yu, K. W. Kim, S. J. Moon, and T. W. Noh, Temperature Evolution of Itinerant Ferromagnetism in SrRuO3 Probed by Optical Spectroscopy, Physical Review Letters 110, 247202 (2013).
  • Daesu Lee, Sang Mo Yang, Jong-Gul Yoon, and Tae Won Noh, Flexoelectric Rectification of Charge Transport in Strain-Graded Dielectrics, Nano Letters 12, 6436 (2012).
  • Daesu Lee, Byung Chul Jeon, Seung-Hyub Baek, Sang Mo Yang, Yeong Jae Shin, Tae Heon Kim, Yong Su Kim, Jong-Gul Yoon, Chang-Beom Eom, and Tae Won Noh, Active Control of Ferroelectric Switching Using Defect-Dipole Engineering, Advanced Materials 24, 6490 (2012).

Visitors

  • Prof. Murugavel Pattukkannu, Department of Physics, Indian Institute of Science, Bangalore, From 2014. 08. 07 to 2015. 08. 06 (Sabbatical year).
  • Prof. Moon Seop Han, Department of Physics, University of Seoul, From 2014. 03. 01 to 2015. 02. 28 (Sabbatical year).