Hua Chen - Colorado State University

Wednesday Oct 14, 2026, 9:00 AM → 8:15 PM US/Eastern

IAMM

IAMM

2641 Osprey Vista Way, Knoxville, TN 37920

Description

Hua Chen is an associate professor of Physics in Colorado State University. He is a theoretical condensed-matter physicist whose research focuses on spin–orbit-coupled quantum materials, with particular expertise in magnetism, spintronics, superconductivity, and topological phenomena.

Website: https://physlabs.colostate.edu/chengroup/

- 1
  
  Arrive at IAMM
- 10:00 AM
  
  Talk Prep
- 2
  
  First-principles theory of magnetic multipole moments in antiferromagnets 147
  
  147
  
  IAMM
  
  Antiferromagnets with vanishing net magnetization can host higher-order spin magnetic multipole moments that capture the spatial complexity of their microscopic spin arrangements. Understanding and quantifying these multipole degrees of freedom open new avenues for describing and manipulating antiferromagnetic order beyond conventional dipolar magnetism. I will present a general formalism to extract spin and orbital magnetic multipole moments from response functions computed within density functional theory [1,2]. The approach provides a practical route to evaluate general-order multipole moments in crystalline solids and establishes connections to experimentally measurable quantities in representative antiferromagnetic materials such as alpha-Fe2O3, Mn3Sn, and Mn3NiN.
  
  [1] Hua Chen, Guang-Yu Guo, and Di Xiao, arXiv:2604.03578
  [2] Sparsh Ghimire and Hua Chen, in preparation.
- 3
  
  Research Meeting
- 12:00 PM
  
  Lunch
- 4
  
  Research Meeting
- 5
  
  Research Meeting
- 6
  
  Research Meeting
- 7
  
  Research Meeting
- 8
  
  Research meeting
- 5:30 PM
  
  Dinner