EQMResearch group
Level 6 · Putting it together

Reading the simulator

How to interpret the stack viewer, the R(E) curve, and the |E(z)|² profile — and which knob does what.

Build on:Spin pattern,Phase window (3-cell rule),The simulated stack,Reflectance spectrum R(E)

Three panels, one experiment

The simulator is laid out as three coordinated panels. Together they give you everything you need to interpret a single magnetic configuration.

Spin pattern (left)

The vertical strip of arrows is your spin pattern. Click any layer to flip it; click and drag to flip a range. The colour next to each arrow tells you the local phase (AFM blue / Mixed purple / FM red).

Stack viewer (center)

A side view of the simulated stack: air, gold, CrSBr layers (coloured by phase), DBR pairs, substrate. The vertical axis is the depth z in nm — useful when you cross-reference with the E-field profile.

Reflectance R(E) (top right)

Your reflectance spectrum. The dashed orange line marks the photon energy used for the E-field panel; click any point on the curve to move it. Watch the dips shift as you flip spins on the left.

|E(z)|² (bottom right)

The standing wave inside the stack at the chosen probe energy. Bright stripes are antinodes (good coupling to the material), dark stripes are nodes (poor coupling). Aligning antinodes with the CrSBr region is half the cavity-design game.

Key takeaways
  • Left = inputs; centre = geometry; right = outputs.
  • Click anywhere on R(E) to retune the field probe.