About Ziyu Xiang
I am a Postdoctoral researcher in Physics at the University of California, Berkeley, working in Prof. Feng Wang’s group. I earned my PhD (2025) in Physics from UC Berkeley. My research focuses on studying strongly correlated two-dimensional electron systems using advanced scanning probe techniques, particularly scanning tunneling microscopy (STM) and atomic force microscopy (AFM).
Research Focus
My research involves applying cutting-edge experimental techniques to study:
- Quantum many-body systems in two-dimensional materials
- Wigner crystals and quantum melting in disordered systems
- Luttinger liquid physics in van der Waals heterostructures
- Moiré excited states and artificial atoms
- Strongly correlated electron systems with single-electron sensitivity
Technical Expertise
Experimental Techniques:
- Scanning Tunneling Microscopy (STM) with sub-nanometer spatial resolution
- Atomic Force Microscopy (AFM) including SNOM, PFM, and TFM modes
- Photocurrent tunneling microscopy
- 2D material exfoliation and device fabrication
- Various lithography techniques (AFM, photo, e-beam)
- Optical spectroscopy (absorption, PL, Raman)
Materials & Fabrication:
- Van der Waals heterostructure assembly
- Polymer stacking techniques (PPC, PET, PC)
- BN-sliding technique for twist angle control
- Shadow-mask contact growth
- Plasma etching and wire bonding
Skills:
- Machine learning for graphene image identification
- Advanced data analysis and modeling
- Clean room fabrication techniques
Education
PhD in Physics
University of California, Berkeley | 2021 - 2025
Advisor: Prof. Feng Wang
Bachelor of Science in Physics
University of Chinese Academy of Sciences (UCAS) | 2016 - 2020
Advisor: Prof. Wu Zhou
Experience
Postdoctoral Researcher
University of California, Berkeley | 2025 - Present
Feng Wang Group
Graduate Research Assistant
University of California, Berkeley | 2021 - 2025
Feng Wang Group
For more details about my research, publications, and CV, please explore the other sections of this website.