Tsung-Han Yang

Postdoctoral Researcher @ ORNL
PhD in Physics @ Brown University

Research Page Improvement Plan

Goal: make the research page evidence that I can carry a quantum materials problem end-to-end: grow or prepare materials, characterize them, design and execute scattering measurements, analyze/model the data, publish the physics, and prototype software when existing tools are not enough.

Core Message

Position the page around full-stack experimental materials research:

I work across the full materials research loop: material growth and preparation, synchrotron and neutron scattering, local-structure and magnetic analysis, advanced computational modeling, rapid research-tool prototyping, publication, and reusable software development.

The page should not make computation look secondary or weak. It should show computation as one of my major strengths, integrated with hands-on experimental materials science.

Proposed Page Structure

1. Opening Narrative

Add a short intro before the project cards.

Suggested direction:

My research focuses on quantum and functional materials where local structure, magnetism, lattice dynamics, and defects control emergent behavior. I combine material growth/preparation, synchrotron and neutron scattering, total scattering/PDF, RMC and magnetic-PDF modeling, and advanced Python/C++ workflows to connect atomic-scale disorder with transport, symmetry breaking, and dynamics.

2. Full-Stack Materials Research Strip

Add a compact visual/process strip:

Grow / Prepare -> Measure -> Analyze -> Model -> Prototype -> Publish -> Build Tools

Each step should have one short phrase:

  • Grow / Prepare: crystal growth, solid-state synthesis, sample environments
  • Measure: synchrotron, neutron scattering, PDF, diffuse scattering, INS
  • Analyze: Rietveld, PDF, mPDF, symmetry, local structure
  • Model: RMC, phonons, DFT/phonopy where appropriate
  • Prototype: browser tools, Python/C++ workflows, WebGPU/Pyodide proof-of-concepts
  • Publish: first-author papers, peer-reviewed results
  • Build Tools: reusable apps and open-source scientific software

3. Research Cards With Ownership

Rewrite each project card with a consistent structure:

  • Question: the scientific problem
  • Ownership: what I personally drove
  • Methods: experimental and computational toolkit
  • Outcome: discovery, paper, tool, or reusable workflow

Tone should use confident language:

  • I led...
  • I developed...
  • I combined...
  • I built...
  • This resulted in...

Avoid vague phrasing like we investigate unless emphasizing collaboration.

Project Rewrite Targets

Topological Kagome Magnets

Suggested title:

Kagome Magnets: Magnetostructural Transitions, Local Disorder, and Topological Transport

Points to show:

  • Materials: Mn3Sn, Mn3Ga, (Fe,Co)Sn
  • Experimental: material growth/preparation, neutron/synchrotron scattering, total scattering/PDF
  • Computational: RMC, mPDF, symmetry analysis, Python workflows
  • Outcome: anomalous Hall transport, Weyl phase transition, local symmetry breaking, antiferromagnetism

Local Structure and Magnetic Correlations

Suggested title:

Local Structure and Magnetic Correlations From Total Scattering

Points to show:

  • Question: what local correlations are invisible to average diffraction?
  • Methods: neutron total scattering, PDF, magnetic PDF, RMC
  • Ownership: experimental design/analysis/modeling pipeline
  • Outcome: connect short-range correlations to emergent magnetic/topological behavior

Phonon Dynamics From RMC Ensembles

Suggested title:

Phonon Dynamics Reconstructed From Total Scattering

Points to show:

  • Question: can static total-scattering/RMC ensembles reveal dynamical information?
  • Methods: RMCProfile, force constants, phonon DOS, INS simulation, Python/C++, WebGPU app
  • Ownership: developed analysis workflow and software prototype/tooling
  • Outcome: research-derived software and reusable computational workflow

Cluster Mott and Spin-Orbital Physics

Suggested title:

Local Symmetry Breaking in Cluster Mott Insulators

Points to show:

  • Materials: GaTa4Se8, GaNb4Se8 if appropriate
  • Experimental: total scattering/PDF and local-structure analysis
  • Computational: local distortion modeling, symmetry interpretation
  • Outcome: Jahn-Teller physics, spin-orbital dimer formation, hidden local symmetry breaking

Prototyping Section

Add prototyping as an explicit capability, not just a software afterthought.

Suggested framing:

When a research bottleneck cannot be solved well with existing tools, I prototype the missing workflow: local-data browser apps, WebGPU/Pyodide proof-of-concepts, reusable Python/C++ pipelines, and visualization dashboards for scattering and RMC analysis.

Examples:

  • rmc-phonon-dynamics: phonon analysis from RMC ensembles; main WebGPU speedup belongs here
  • rmc-toolkits: RMCProfile/STOG monitoring, visualization, KDE slices, and model inspection
  • nebula3d: 3D diffuse scattering cleanup and 3D-DeltaPDF workflow

Methods Section

Add a compact Methods I Use or Methods I Own section.

Suggested groups:

  • Materials: crystal growth, solid-state synthesis, sample preparation
  • Scattering: neutron diffraction, synchrotron diffraction, total scattering, PDF, diffuse scattering, INS
  • Local/Magnetic Analysis: RMC, mPDF, Rietveld/magnetic refinement, symmetry analysis
  • Computation: Python, C++, HPC, sparse/numerical methods, DFT, phonopy, WebGPU/Pyodide prototyping
  • Output: papers, analysis software, browser apps, reproducible workflows

Recent Highlights

Research highlights should name systems and outcomes directly:

  • First-author Nature Communications work linking magnetostructural transformation to Weyl physics in Mn3Sn
  • JACS work revealing coupled antiferromagnetism and local symmetry breaking in kagome (Fe,Co)Sn
  • Software prototypes turning RMC/scattering workflows into reusable browser-based or Python tools

Figure Strategy

Replace placeholder/concept graphics over time with real evidence:

  • paper TOC figures
  • PDF/RMC fit panels
  • neutron/synchrotron scattering maps
  • local distortion motifs
  • phonon DOS / INS simulation plots
  • screenshots from browser tools

Real figures should be prioritized because this page is meant to prove experimental and computational ownership.

Implementation Order

  1. Add opening narrative and full-stack process strip.
  2. Rewrite project cards using Question / Ownership / Methods / Outcome.
  3. Add prototyping section.
  4. Add methods section.
  5. Replace placeholder graphics with real figures/screenshots.
  6. Add direct DOI/code links to each project card.

No public changes should be committed, pushed, deployed, or hosted without explicit permission.