Emergence of giant spin-orbit torque in a two-dimensional hole gas on the hydrogen-terminated diamond surface
arXiv:2411.10978 · doi:10.1103/PhysRevB.110.L220407
Abstract
Two-dimensional (2D) carrier systems exhibit various significant physical phenomena for electronics and spintronics, where one of the most promising traits is efficient spin-to-charge conversion stemming from their Rashba-type spin-orbit interaction. Meanwhile, a nuisance in quests of promising materials for spintronics application is that vast majority of the investigated platforms consists of rare and/or toxic elements, such as Pt and Te, which hinders progress of spin conversion physics in view of element strategy and green technology. Here, we show the emergence of giant spin-orbit torque driven by 2D hole gas at the surface of hydrogen-terminated diamond, where the constituent substances are ubiquitous elements, carbon and hydrogen. The index of its spin torque efficiency at room temperature is several times greater than that of rare metal, Pt, the benchmark system/element for spin-to-charge conversion. Our finding opens a new pathway for more sustainable spintronics and spin-orbitronics applications, with efficient spin-orbit torque employing ubiquitous non-toxic elements.
arXiv comment19pages, 4figures
References in corpus (25)
- Magnetic effects at the interface between nonmagnetic oxides
- Spin Transfer Torque Generated by the Topological Insulator Bi_2Se_3
- Tunable Rashba spin-orbit interaction at oxide interfaces
- Direct imaging of the coexistence of ferromagnetism and superconductivity at the LaAlO3/SrTiO3 interface
- Coexistence of Magnetic Order and Two-dimensional Superconductivity at LaAlO/SrTiO Interfaces
- Quantitative characterization of the spin orbit torque using harmonic Hall voltage measurements
- Highly efficient and tuneable spin-to-charge conversion through Rashba coupling at oxide interfaces
- Dependence of the Efficiency of Spin Hall Torque on the Transparency of Pt-Ferromagnetic Layer Interfaces
- Interplay of spin-orbit torque and thermoelectric effects in ferromagnet/normal metal bilayers
- Tuning the spin Hall effect of Pt from the moderately dirty to the superclean regime
- Inverse Edelstein Effect
- A polarization-induced 2D hole gas in undoped gallium nitride quantum wells
- Anisotropic magneto-transport effects at SrTiO3\LaAlO3 interfaces
- Self-induced inverse spin Hall effect in permalloy at room temperature
- Cubic Rashba spin-orbit interaction of two-dimensional hole gas in strained-Ge/SiGe quantum well
- Large multi-directional spin-to-charge conversion in low symmetry semimetal MoTe at room temperature
- The spin Hall effect of Bi-Sb alloys driven by thermally excited Dirac-like electrons
- Measurement of spin pumping voltage separated from extrinsic microwave effects
- Spin-orbit magnetic state readout in scaled ferromagnetic/heavy metal nanostructures
- Strong evidence for d-electron spin transport at room temperature at a LaAlO3/SrTiO3 interface
- Efficient injection and detection of out-of-plane spins via the anomalous spin Hall effect in permalloy nanowires
- Antilocalization and spin-orbit coupling in hole strained GaAs/InGaAs/GaAs quantum well heterostructures
- Spin galvanic effect at the conducting SrTiO3 surfaces
- Spin Transfer Torque with Spin Diffusion in Magnetic Tunnel Junctions
- Anomalous sign inversion of spin-orbit torque in ferromagnetic/nonmagnetic bilayer systems due to self-induced spin-orbit torque