Yueqing Chang

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https://yueqingchang.github.io

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Research

Reach me at yueqing2 AT illinois DOT edu

Present appointment:

Education:

Publications:

  1. Yueqing Chang, Lucas K. Wagner, Renormalized density matrix downfolding: A rigorous framework in learning emergent models from ab initio many-body calculations, Phys. Rev. B 110, 195103 (2024).
  2. Yueqing Chang, Jinjing Yi, Ang-Kun Wu, Fabian B. Kugler, Eva Y. Andrei, David Vanderbilt, Gabriel Kotliar, and J. H. Pixley, Vacancy-induced tunable Kondo effect in twisted bilayer graphene, Phys. Rev. Lett. 133, 126503 (2024) (Editor’s Suggestion).
  3. Yueqing Chang, Erik G. C. P. van Loon, Brandon Eskridge, Brian Busemeyer, Miguel A. Morales, Cyrus E. Dreyer, Andrew J. Millis, Shiwei Zhang, Tim O. Wehling, Lucas K. Wagner, Malte Rösner, Downfolding from Ab Initio to Interacting Model Hamiltonians: Comprehensive Analysis and Benchmarking, npj Comput. Mater. 10, 129 (2024).
  4. William A. Wheeler, Shivesh Pathak, Kevin Kleiner, Shunyue Yuan, João N. B. Rodrigues, Cooper Lorsung, Kittithat Krongchon, Yueqing Chang, Yiqing Zhou, Brian Busemeyer, Kiel T. Williams, Alexander Muñoz, Chun Yu Chow, Lucas K. Wagner, PyQMC: an all-Python real-space quantum Monte Carlo module in PySCF, J. Chem. Phys. 158, 114801 (2023).
  5. Shunyue Yuan, Yueqing Chang, Lucas K. Wagner, Quantification of electron correlation for approximate quantum calculations, J. Chem. Phys. 157, 194101 (2022).
  6. Yulia Maximenko, Yueqing Chang, Guannan Chen, Mark R. Hirsbrunner, Waclaw Swiech, Taylor L. Hughes, Lucas K. Wagner, Vidya Madhavan, Electric field effects on the band gap and edge states of monolayer 1T’-WTe2, npj Quantum Mater. 7, 29 (2022).
  7. Yueqing Chang, Lucas K. Wagner, Effective spin-orbit models using correlated first-principles wave functions, Phys. Rev. Research 2, 013195 (2020).

Preprints:

  1. Tsung-Chi Wu, Yueqing Chang, Ang-Kun Wu, Michael Terilli, Fangdi Wen, Mikhail Kareev, Eun Sang Choi, David Graf, Qinghua Zhang, Lin Gu, Zhentao Wang, J. H. Pixley, Jak Chakhalian, Electronic anisotropy and rotational symmetry breaking at a Weyl semimetal–spin-ice interface, arXiv:2409.18880.

Invited talks:

  1. Real-space quantum Monte Carlo for downfolding: benchmarking DFT+cRPA and deriving effective interacting models, QMC group meeting at CCQ, NYC, April 2024.
  2. Minimal effective models from first principles for hydrogen chains in the strongly correlated regime, 2022 Workshop on Recent Developments in Electronic Structure, Columbia Univeristy, June 2022. View talk online.
  3. Derivation of model Hamiltonians using quantum Monte Carlo, Quantum Monte Carlo Workshop 2021, virtual. View talk online.

Contributed talks:

  1. Effective models derived for the hydrogen chain using correlated many-body wave functions, APS March Meeting 2022, Chicago, D49.00011.
  2. Z-dependent spin-momentum locking in monolayer 1T’-WTe2, APS March Meeting 2021, virtual, R45.00010.
  3. Effective spin-orbit models using correlated wave functions, TSRC, Stochastic Methods in Electronic Structure Theory Workshop, June 2019, Telluride.

Outreach:

Teaching and mentoring:

Honors and Awards: