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Observation of the orbital Nernst effect
Yuto Masuda, Takamasa Hirai, Daegeun Jo +5
The Nernst effect, which converts a temperature gradient into a transverse charge current, is fundamental to thermoelectrics. Its spin analogue, the spin Nernst effect, enables the…
Spin-Orbital Hall Nano-Oscillators using PtCr/NiFe
Utkarsh Shashank, Akash Kumar, Daegeun Jo +11
The orbital Hall effect provides a promising route for generating angular-momentum currents beyond conventional spin Hall physics. PtCr alloys exhibit unusually large current-induc…
Theoretical study of orbital torque: Dependence on ferromagnet species and nonmagnetic layer thickness
Daegeun Jo, Peter M. Oppeneer
The manipulation of magnetization in ferromagnetic metals (FMs) through orbital torque (OT) has emerged as a promising route for energy-efficient magnetic devices without relying o…
Itinerant Orbital Hall Effect Mechanism Leading to Large Negative Orbital Torques from Light Metal Vanadium
Nikhil Vijayan, Durgesh Kumar, Ao Du +13
The orbital Hall effect (OHE) has attracted significant attention for developing energy-efficient electronic devices. However, utilizing it in fast, low-power devices requires an e…
Harnessing magnetic octupole Hall effect to induce torque in altermagnets
Seungyun Han, Daegeun Jo, Insu Baek +2
d-wave altermagnets have magnetic octupoles as their order parameters [Phys. Rev. X 14, 011019 (2024)]. We theoretically show that magnetic octupoles injected from outside generate…
Direct observation of nanometer-scale orbital angular momentum accumulation
Juan Carlos Idrobo, Ján Rusz, Gopal Datt +6
Conversion of charge to orbital angular momentum through the orbital Hall effect (OHE) holds transformative potential for the development of orbital-based electronics, however, it…