What question did this study set out to answer?

The central aim is to clarify the nature and spatial extent of magnetic order in RuO2 thin films grown under varying conditions.

Surface-localized magnetic order in RuO2 thin films revealed by low-energy muon probes

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Demonstrates surface-localized magnetic order in RuO2 thin films, suggesting implications for material properties.

The central aim is to clarify the nature and spatial extent of magnetic order in RuO2 thin films grown under varying conditions.
Deposited thin films of RuO2 using pulsed laser deposition and sputtering methods.
Utilized low-energy muon spin rotation/relaxation (LE-μSR) for sensitivity measurements.
Conducted experiments at temperatures from 4 K to 290 K in transverse magnetic fields.
Analyzed magnetic signals originating from the near-surface region of the films.
Magnetic signals emerge from the near-surface region of the RuO2 films, approximately 10 nm deep.
Affected volume fraction exhibiting magnetic order is about 8.5%.
Localized magnetic responses are consistent across different substrates and growth techniques.
Findings highlight the significance of surface defects and reduced-dimensional contributions.

Akashdeep et al. (2026) studied this question.

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