Observation of orbital-angular-momentum-driven temperature modulation via the spin Peltier effect.
Orbital angular momentum drives temperature modulation via the spin Peltier effect in heterostructures, with a maximum at intermediate CuO x thicknesses.
- Why it matters: Understanding alternative heat transport mechanisms beyond charge currents is crucial for advancing spin-orbit caloritronics and energy control in solids.
- What they did: The study used wedge-shaped CuO x layers and spatially resolved thermal measurements to map and analyze the contributions of spin and orbital currents in yttrium-iron-garnet/Pt/CuO x heterostructures, identifying a characteristic length scale for interfacial OAM.
- The result: Charge-current-driven orbital angular momentum can induce temperature changes, revealing a new interfacial heat transport channel and opening pathways for novel spin-orbit caloritronic applications.