The research of my group is focused on the theory of high temperature superconductivity. A major topic is the pairing mechanism of the high Tc superconductivity. We have been working to determine the experimental constraints from high resolution ARPES data that any viable theory of high Tc superconductivity must satisfy. This will differentiate among many proposed ideas to settle the problem down. Other topics of my group are variations on the theme of high Tc superconductivity pairing interaction
Education
1989 June PhD University of Pennsylvania
1984 Feb MSc Seoul National University
1982 Feb BSc Seoul National University
Experience
Research Associate, University of Rochester & Xerox Webster Research Center, USA (1989~1992)
Visiting Professor, University of California (2006.9~2006.12)
Visiting Professor, University of Paris (1999.2~1999.8)
Executive Director, Asia Pacific Center for Theoretical Physics (2014~present)
Professor, Department of Physics, SKKU (1992~present)
Journal Articles
(2023)
Ubiquitous coexisting electron-mode couplings in high-temperature cuprate superconductors.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA.
120,
43
(2022)
Influence of disorder strength on the superconducting mechanism of MgB2.
SUPERCONDUCTOR SCIENCE & TECHNOLOGY.
35,
1
(2021)
Maximal superconductivity in proximity to the charge density wave quantum critical point in CuxTiSe2.
PHYSICAL REVIEW B.
104,
18
(2021)
Field-induced quantum breakdown of superconductivity in magnesium diboride.
NPG ASIA MATERIALS.
13,
1
(2021)
Excitonic insulator emerging from semiconducting normal state in 1T-TiSe2.
PHYSICAL REVIEW B.
103,
20
(2020)
Electronic properties of twisted bilayer graphene in high-energy k . p-Hamiltonian approximation.
MODERN PHYSICS LETTERS B.
34,
19-20
(2020)
The stability of hole-doped antiferromagnetic state in a two-orbital model.
NEW JOURNAL OF PHYSICS.
22,
6
(2019)
Topological quantum oscillation of magnetization in the Josephson phi(0) junction.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS.
491,
1
(2019)
Dynamical effects on superconductivity in a BCS-BEC crossover: Dynamical mean field theory and numerical renormalization group study of the Holstein model in infinite dimensions.
PHYSICAL REVIEW B.
99,
174503
(2018)
How to pin down the pairing interaction for high T-c superconductivity in cuprates.
INTERNATIONAL JOURNAL OF MODERN PHYSICS B.
32,
17
(2016)
Quantitative determination of pairing interactions for high-temperature superconductivity in cuprates.
Science advances.
2,
3
(2015)
Low energy impurity kink in the normal and anomalous self-energies in Bi-cuprate superconductors.
INTERNATIONAL JOURNAL OF MODERN PHYSICS B.
29,
1
(2015)
Effects of repetitive bending on the magnetoresistance of a flexible spin-valve.
JOURNAL OF APPLIED PHYSICS.
117,
17
(2015)
Anomalous weak ferromagnetism in the magnetically frustrated system R1-xYxB4 (R=Tb and Dy).
PHYSICAL REVIEW B.
91,
2
(2014)
Sharp Low-Energy Feature in Single-Particle Spectra due to Forward Scattering in d-Wave Cuprate Superconductors.
PHYSICAL REVIEW LETTERS.
113,
5
(2013)
Angle and frequency dependence of self-energy from spin fluctuation mediated d-wave pairing for high temperature superconductors.
JOURNAL OF PHYSICS-CONDENSED MATTER.
25,
36
(2013)
Coexistence of Two Sharp-Mode Couplings and their Unusual Momentum Dependence in the Superconducting State of Bi2Sr2CaCu2O8+delta Revealed by Laser-Based Angle-Resolved Photoemission.
PHYSICAL REVIEW LETTERS.
111,
10
(2013)
Self-energy of spin-fluctuation-mediated superconductors: Inconsistency against ARPES for cuprates.
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS.
493,
(2012)
Comments on the d-wave Pairing Mechanism for Cuprate High T-c Superconductors: Higher is Different?.
JOURNAL OF THE KOREAN PHYSICAL SOCIETY.
60,
7
Publications
(2002)
대학물리학.
북스힐.
Co-author
(2001)
일반물리학실험.
성대 출판부.
Co-author
Conference Paper
(2019)
The maximum critical temperature of superconductivity in BCS-BEC
crossover.
International conference on Electron correlation in superconductors and nanostructures.
UKRAINE
(2019)
Dynamical effects on superconductivity in BCS-BEC crossover.
International Conference on New Theories, Discoveries, Applications of Superconductors and Related Materials.
UNITED KINGDOM
(2019)
Character of excitonic insulator phase in a transition metal dichalcogenide 1T-TiSe2..
APS March Meeting.
UNITED STATES
(2019)
Quantum phase interference in nanomagnetic particles coupled to the Josephson φ0 junction.
APS March Meeting.
UNITED STATES
(2019)
Dynamical effects on BCS-BEC crossover in the Holstein model.
APS March Meeting.
UNITED STATES
(2018)
Microscopic Analysis of ARPES Data in Superconductive
State: Intrinsic Self-Energy and Pairing Interaction for
Cuprates.
M2S 2018.
CHINA
(2018)
Detailed constraints on the pairing mechanism for high Tc superconductivity in cuprates.
International conference on Electron correlation in superconductors and nanostructures (ECSN-2017).
UKRAINE
(2018)
Dynamical Mean-Field Theory of Superconductivity in the Hubbard-Holstein Model.
미국물리학회.
UNITED STATES
(2018)
Exciton condensation temperature in a transition metal dichacogenide 1T-TiSe2..
미국물리학회.
UNITED STATES
(2018)
Superconductivity in Potassium Doped P-Terphenyl.
미국물리학회.
UNITED STATES
(2016)
Pairing interaction of cuprate high Tc superconductors.
Pairing interaction in high temperature superconductivity.
KOREA, REPUBLIC OF
(2016)
How to determine the pairing interaction of cuprate superconductors.
한국물리학회 가을 학술대회 Pioneering symposium.
KOREA, REPUBLIC OF
(2016)
Experimental determination of the pairing interaction for superconductivity in cuprates.
International conference on New Theories, Discoveries, Applications of Superconductors and Related Materials.
SLOVENIA
(2016)
Experimental determination of the pairing interaction for high Tc superconductivity in cuprates.
International workshop on recent progress in superconductivity.
KOREA, REPUBLIC OF
(2016)
Experimental constraints on the pairing interaction for cuprate high Tc superconductivity.
22nd Annual IASBS Meeting on Condensed Matter Physics.
IRAN - ISLAMIC REPUBLIC OF
(2016)
The self-energies and bosonic spectrum of high Tc cuprate from laser-based ARPES.
American Physical Society March Meeting.
UNITED STATES
(2015)
Features of spin fluctuation mediated superconductivity for cuprates.
한국물리학회 가을학술대.
KOREA, REPUBLIC OF
(2015)
Extraction of normal and pairing self-energies and Eliashberg functions of high temperature superconductor Bi2212 from Laser-based ARPES experiment.
APS March Meeting.
UNITED STATES
(2015)
Anomalous self-energy and impurity feature in Bi-cuprate superconductors.
2015년도 한국초전도·저온 학술연합회 동계학술대회.
KOREA, REPUBLIC OF
(2014)
Effects of repetitive bending of a flexible spin-valve on the magnetoresistance.
The 59th Annual Magnetism and Magnetic Materials (MMM) Conference.
UNITED STATES
