Menu
About
Academic Advisory Committee Research Faculty Principal Investigators Jointly Appointed Principal Investigators Adjunct Principal Investigators Emeriti Faculty Staff
Research Events
Language

Yang-Hao Chan

Associate Research Fellow

Yang-Hao Chan
Email: yanghao[at]gate.sinica.edu.tw
Office: R366
Tel: +886-2-23624966
Lab: 501
Lab Tel: +886-2-23624949
Computational Materials Physics Lab

Research Interest

  • Quantum phenomena in light-driven systems
  • Excitonic effects on Nonlinear optical responses
  • Real-time simulation of quantum dynamics
  • Computational methods of many-body physics
  • Ab initio many-body perturbation theory

Research Overview

Dr. Chan's research group applies theoretical and computational methods to study nonequilibrium quantum dynamics from first-principles. The group developed a method to compute nonlinear optical responses in the exciton basis and established a diagrammatic approach. They applied this method to study the shift current and second harmonic generation and the associated selection rules. The group is also interested in ultrafast exciton dynamics due to exciton- phonon couplings. In their recent work, they revealed the ultrafast charge transfer path in monolayer MoS2 and MoS2/WS2 heterostructure by analyzing the exciton-phonon coupling matrix elements.

figure

Education

  • B.S., Physics, 2003, National Taiwan University
  • M.S., Physics, 2005, National Taiwan University
  • Ph.D., Physics, 2013, University of Michigan, Ann arbor, USA

Professional History

  • 2014-2016, Postdoctoral Researcher in IAMS, Academia Sinica
  • 2017-2020, Project Scientist in Lawrence Berkeley National Laboratory, USA
  • 2021-2025, Assistant Research Fellow, IAMS, Academia Sinica
  • 2025-present, Associate Research Fellow, IAMS, Academia Sinica
Selected Publications
  • Exciton Lifetime and Optical Line Width Profile via Exciton–Phonon Interactions: Theory and First-Principles Calculations for Monolayer MoS2, Nano Letters, 23, 3971 (2023)
  • Exciton-driven renormalization of quasiparticle band structure in monolayer MoS2, Phys. Rev. B, 106, L081117 (2022)
  • Giant exciton-enhanced shift currents and direct current conduction with subbandgap photo excitations produced by many-electron interactions, PNAS, 118 (25) e1906938118 (2021)
  • Polaron spectral properties in doped ZnO and SrTiO3 from first principles, Phys. Rev. Research, 2, 043296 (2020)
  • Ising order in a magnetized Heisenberg chain subject to a uniform Dzyaloshinskii-Moriya interaction, Phys. Rev. B, 96, 214441 (2017)
  • Ca3P2 and other topological semimetals with line nodes and drumhead surface states, Phys. Rev. B, 93, 205132 (2016).
  • Charge density wave transition in single-layer titanium diselenide, Nat. Comm. 6, 8943 (2015)