Electronic interaction in condensed matter systems is the main focus of my research. Fundamental changes in materials properties such as phase transition controlled by external conditions is the main theme. With today’s advancement in nanotechnology, the external electric bias applied on nanoscale devices opens up new realm of physics questions which had been non-questions a few decades ago. The examples are transformation of collective states such as resistive phase transitions through electron-electron interaction, or disorder-driven localization when driven by external electric field. Most work involves close collaboration with experimentalists. My group uses theoretical techniques such as analytic and numerical diagrammatic methods with Green’sfunctions, and fully numerical methods such as quantum Monte Carlo method, exact-diagonalization.

Selected Publications

Correlated insulator collapse due to quantum avalanche via in-gap ladder states, J.E. Han, C. Aron, X. Chen, I. Mansaray, J.H. Han, K.S. Kim, M. Randle, J.P. Bird, Nat. Comm. 14, 2936 (2023)
Signatures of hot carriers and hot phonons in the re-entrant metallic and semiconducting states of Moiré-gapped graphene, J. Nathawat, I. Mansaray, K. Sakanashi, N. Wada, M.D. Randle, S. Yin, K. He, N. Arabchigavkani, R. Dixit, B. Barut, M. Zhao, H. Ramamoorthy, R. Somphonsane, G.-H. Kim, K. Watanabe, T. Taniguchi, N. Aoki, J. E. Han, J. P Bird, Nat. Comm. 14, 1507 (2023)
Fusion of Majorana bound states with mini-gate control in two-dimensional systems, T. Zhou, M.C. Dartiailh, K. Sardashti, J.E. Han, A. Matos-Abiague, J. Shabani, Igor Žutić, Nature Communications 13, 1738 (2022)
Microscopic Theory of Resistive Switching in Ordered Insulators: Electronic versus Thermal Mechanisms, Jiajun Li, Camille Aron, Gabriel Kotliar, and Jong E. Han, Nano Letters (2017)
Electric-Field-Driven Resistive Switching in the Dissipative Hubbard Model, Jiajun Li, Camille Aron, Gabriel Kotliar, and Jong E. Han, Phys. Rev. Lett. 114,226403 (2015)

For a complete list of publications, please see Google Scholar.