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Growth of superconducting thin films by a PLD (pulsed laser deposition) and a HPCVD (hybrid physical-chemical vapor deposition) techniques and study of physical properties for superconductors such as cuprates superconductors, Fe-based superconductors, and MgB2 superconductors. By using PPMS (physical property measurement system) and MPMS ( magnetic property measurement system), we investigate vortex dynamics in the mixed states in the wide temperature ranges of 2-300 K and the magnetic field ranges up to 9 Tesla.


  • (PhD) 1994, Physics department, Sungkyunkwan University


  • 2005-present, Professor, Sungkyunkwan University
  • 2003-2005, Assistant professor, Pukyung University
  • 1995-2003, Research professor, POSTECH and University of Houston
  • 2016-present, Vice-president, Korean superconductivity society
  • 2013-2015, Editor in chief, Progress in superconductivity
  • 2012-2014, Review board member, National research foundation of Korea

학술지 논문

  • (2023)  Roles of Fe-ion irradiation on MgB2 thin films: Structural, superconducting, and optical properties.  JOURNAL OF ALLOYS AND COMPOUNDS.  968, 
  • (2023)  Correlation between electron-phonon coupling and superconductivity of Sn2+ ion irradiated MgB2-thin films.  CERAMICS INTERNATIONAL.  49, 
  • (2022)  Hall effects of c-axis-oriented Mg1_xAlxB2 thin film.  MATERIALS LETTERS.  330,  1
  • (2022)  Effects of Sn-ion irradiation on local structure and flux pinning properties of MgB2 thin films.  CERAMICS INTERNATIONAL.  49,  2
  • (2022)  High critical current density and high-tolerance superconductivity in high-entropy alloy thin films.  NATURE COMMUNICATIONS.  13,  1
  • (2022)  Improvement of bulk superconducting current capability of MgB2 films using surface degradation.  Scripta Materialia.  209, 
  • (2022)  Influence of disorder strength on the superconducting mechanism of MgB2.  SUPERCONDUCTOR SCIENCE TECHNOLOGY.  35,  1
  • (2021)  Competition between ferromagnetism and superconductivity in GdBa2Cu3O7-x/La0.7Sr0.3MnO3 bilayers with varying thickness.  CERAMICS INTERNATIONAL.  48,  1
  • (2021)  Field-induced quantum breakdown of superconductivity in magnesium diboride.  NPG ASIA MATERIALS.  13,  1
  • (2021)  Tuning Flux Pinning in GdBa2Cu3O7-x/La0.7Sr0.3MnO3 Epitaxial Bilayers via Substrate-Induced Strain.  CRYSTAL GROWTH & DESIGN.  21,  8
  • (2021)  Local structure and superconductivity in (Bi1.6Pb0.4Sr2Ca2Cu3O10+6)1-x(Fe3O4)x compounds.  CERAMICS INTERNATIONAL.  47,  12
  • (2021)  Effects of surface damage on critical current density in MgB2 thin films.  CURRENT APPLIED PHYSICS.  22,  -
  • (2021)  Electron-phonon coupling behavior in MgB2 films with various thicknesses of ZnO buffer layer on metallic substrates.  SOLID STATE COMMUNICATIONS.  323, 
  • (2021)  Unraveling the Scaling Characteristics of Flux Pinning Forces in Bi1.6Pb0.4Sr2Ca2-xNaxCu3O10+delta Superconductors.  JOURNAL OF ELECTRONIC MATERIALS.  50,  3
  • (2019)  Angle-dependent Hall effect and vortex dynamics in single-crystalline MgB2 thin films.  SUPERCONDUCTOR SCIENCE & TECHNOLOGY.  32,  11
  • (2019)  Giant proximity effect in single-crystalline MgB2 bilayers.  SCIENTIFIC REPORTS.  9,  -
  • (2019)  Effects of oxygen ion implantation on single-crystalline MgB2 thin films.  JOURNAL OF APPLIED PHYSICS.  125,  2
  • (2019)  Influence of carbon-ion irradiation on the superconducting critical properties of MgB2 thin films.  SUPERCONDUCTOR SCIENCE & TECHNOLOGY.  32,  2
  • (2018)  Enhancements of Critical Current Density in the Bi-Pb-Sr-Ca-Cu-O Superconductor by Na Substitution.  MATERIALS TRANSACTIONS.  59,  7
  • (2018)  Manipulating superconducting phases via current-driven magnetic states in rare-earth-doped CaFe2As2.  NPG ASIA MATERIALS.  10, 


  • 철-비소 기반 초전도성 박막 제조방법.  10-2009-0077099.  20090820.  대한민국
  • 철-비소 기반 초전도성 박막용 타겟 제조방법.  10-2009-0077100.  20090820.  대한민국
  • Superconducting Magnesium Diboride thin film and method and apparatus for fabricating the same.  US 7,189,425 B2.  20070313.  미국
  • 초전도 마그네슘 보라이드 (MgB2) 박막 그 제조방법 및 그 장치.  3835685.  20060804.  일본
  • Superconducting Magnesium Diboride thin film and method and apparatus for fabricating the same.  2377395.  20031231.  영국
  • 초전도 마그네슘 보라이드 (MgB2) 박막 그 제조방법 및 그 장치.  0413533.  20031218.  대한민국


  • (2005)  Mixed-state Hall effect of MgB2 thin films.  The Korean superconductivity society meeting 2005.  대한민국
  • (2003)  Bi, MgB2, and other materials.  Annual meeting of the American ceramic society.  미국
  • (2003)  Fabrication of superconducting MgB2 thin films by pulsed laser deposition method and its transport property.  Annual Meeting of the American Ceramic Society.  미국
  • (2001)  Growth and transport properties of c-axis-oriented MgB2 thin films.  14th international symposium on superconductivity.  일본