Position

• Professor of Department of Physics

• Head of Department of Physics

• Head of Graduate School of Nanoscie
   

Educations

• 2005   POSTECH (Ph.D. in Experimental Condensed Matter Physics)

• 2000   POSTECH (M.S. in Experimental Condensed Matter Physics)

• 1998   POSTECH (B.S. in Physics)
   

Experiences

• 2010~Present    KAIST, Professor

• 2006~2009        UC Berkeley, Post-doc

• 2005~2006        eSSC, POSTECH, Post-doc
   

LAB

Thin Fim Materials Physics Laboratory

The goal of our lab is to create and explore new functionalities including multiferroic phenomena, magnetoelectric effects, and energy-related applications on the basis of transition metal oxide thin films. Our researches will be highly focused on exploring pathways to control magnetism, transport, and structural phases with an electric field using the following approaches:

Research Interest 

• Growth and Characterization of Transition Metal Oxide Thin films
  Laser molecular beam epitaxy (Laser-MBE) and pulsed laser deposition (PLD) techniques for high-crystalline epitaxial film growths with atomic precision; Control of strain, synthesis of artificial structures (ordered structures, superlattices, multilayers), and stabilization of metastable phases through heteroepitaxy; Characterization of structural, electric, magnetic, and transport properties.
• Materials Processing for Devices and Nanoscale Characterization
  Device fabrications using photo-lithography and dry-etching techniques; Understanding materials properties at the nanoscale using scanning probes, piezoresponse force microcopy, conducting-AFM.
• Understanding and Modulation of Strongly Correlated Phenomena in Thin Films
  Inter-coupled phenomena of lattice, spin, and orbital degrees of freedom; Metal-insulator transition, colossal magnetoresistance, orbital/charge ordering, frustrated magnets, superconductivity; Structural/electric/magnetic modulation of the phenomena; Low dimensional high-mobility conduction and new magnetism in functional oxide interfaces.
• Creating New Functional Thin Films and Devices
  Multiferroic thin films for magnetoelectric devices and spintronic applications; Solar energy conversion to electric power through ferroelectric heterostructures and artificial superlattices; Non-volatile information storages, ferroelectric memories, resistance-switching memories.
• The Use of Large Facilities
  Resonant X-ray scattering for probing electron orbital/charge ordered systems using synchrotron source; Strong collaborations for nanoscale characterization of defect/electronic structure through state-of-the-art characterization tools of photoemission electron microscopy (PEEM) and electron microscopy to carry out element specific spectromicroscopy.