Electrically Controlled Spin Injection from Giant Rashba Spin-Orbit Conductor BiTeBr

Abstract

Ferromagnetic materials are the widely used source of spin-polarized electrons in spintronic devices, which are controlled by external magnetic fields or spin-transfer torque methods. However, with increasing demand for smaller and faster spintronic components, utilization of spin-orbit phenomena provides promising alternatives. New materials with unique spin textures are highly desirable since all-electric creation and control of spin polarization is expected, where the strength, as well as an arbitrary orientation of the polarization, can be defined without the use of a magnetic field. In this work, we use a novel spin-orbit crystal BiTeBr for this purpose. Owning to its giant Rashba spin splitting, bulk spin polarization is created at room temperature by an electric current. Integrating BiTeBr crystal into graphene-based spin valve devices, we demonstrate for the first time that it acts as a current-controlled spin injector, opening new avenues for future spintronic applications in integrated circuits.

Main Text: 10 pages, 5 figures; Supporting Information: 12 pages, 6 figures

References in corpus (54)

• Quantum Spin Hall Effect in Graphene
• Superconducting proximity effect and Majorana fermions at the surface of a topological insulator
• Signatures of Majorana fermions in hybrid superconductor-semiconductor nanowire devices
• Electronic spin transport and spin precession in single graphene layers at room temperature
• Quantum Spin Hall Effect
• New Perspectives for Rashba Spin-Orbit Coupling
• Basic obstacle for electrical spin-injection from a ferromagnetic metal into a diffusive semiconductor
• A generic new platform for topological quantum computation using semiconductor heterostructures
• Electron transport through double quantum dots
• Current-induced spin-orbit torques in ferromagnetic and antiferromagnetic systems
• Graphene Spintronics
• Emergent Phenomena Induced by Spin-Orbit Coupling at Surfaces and Interfaces
• Realizing Majorana zero modes in superconductor-semiconductor heterostructures
• The Quantum Spin Hall Effect: Theory and Experiment
• Evidence for reversible control of magnetization in a ferromagnetic material via spin-orbit magnetic field
• Spin-Orbit Proximity Effect in Graphene
• Highly efficient and tuneable spin-to-charge conversion through Rashba coupling at oxide interfaces
• Tunneling Spin Injection into Single Layer Graphene (Supplementary Information)
• Tunneling Spin Injection into Single Layer Graphene
• Prospects for Spin-Based Quantum Computing
• Spin-pumping into surface states of topological insulator α-Sn, spin to charge conversion at room temperature
• Room temperature spin Hall effect in graphene/MoS${}_2$ van der Waals heterostructures
• Emergence of non-centrosymmetric topological insulating phase in BiTeI under pressure
• Charge-to-Spin Conversion by the Rashba-Edelstein Effect in 2D van der Waals Heterostructures up to Room Temperature
• Origin of giant bulk Rashba splitting: Application to BiTeI
• Electronic spin transport in graphene field effect transistors
• Tunable room-temperature spin galvanic and spin Hall effects in van der Waals heterostructures
• Strongly spin-orbit coupled two-dimensional electron gas emerging near the surface of polar semiconductors
• Nanosecond spin lifetimes in single- and few-layer graphene-hBN heterostructures at room temperature
• Rashba-Edelstein Magnetoresistance in Metallic Heterostructure
• Spin Transport and Relaxation in Graphene
• Optimal charge-to-spin conversion in graphene on transition metal dichalcogenides
• Electrical Detection of Spin Precession in Single Layer Graphene Spin Valves with Transparent Contacts
• Spin Hall effect and Weak Antilocalization in Graphene/Transition Metal Dichalcogenide Heterostructures
• Large multi-directional spin-to-charge conversion in low symmetry semimetal MoTe${}_2$ at room temperature
• Observation of Spin Hall Effect in Weyl Semimetal WTe2 at Room Temperature
• Origin of inverse Rashba-Edelstein effect at Cu/Bi interface using lateral spin valves
• Optospintronics in graphene via proximity coupling
• Gate-Tunable Reversible Rashba-Edelstein Effect in a Few-Layer Graphene/2H-TaS2 Heterostructure at Room Temperature
• Giant Edelstein effect in Topological-Insulator--Graphene heterostructures
• Current-induced spin polarization in topological insulator-graphene heterostructures
• Covariant conservation laws and the spin Hall effect in Dirac-Rashba systems
• Rashba split surface states in BiTeBr
• Hierarchical spin-orbital polarisation of a giant Rashba system
• Electrical detection of spin accumulation and spin precession at room temperature in metallic spin valves
• Exfoliation of single layer BiTeI flakes
• Optical properties of BiTeBr and BiTeCl
• Effect of contacts on spin lifetime measurements in graphene
• Current-induced spin polarization in graphene due to Rashba spin-orbit interaction
• Pressure effects on crystal and electronic structure of bismuth tellurohalides
• Crystal growth and electronic properties of a 3D Rashba material, BiTeI, with adjusted carrier concentrations
• BiTeCl and BiTeBr: a comparative high-pressure optical study
• All-electrical creation and control of giant spin-galvanic effect in 1T-MoTe2/graphene heterostructures at room temperature
• Spin accumulation at nonmagnetic interface induced by direct Rashba Edelstein effect

Cited by in corpus (15)

• Gate-tunable Spin-Galvanic Effect in Graphene Topological insulator van der Waals Heterostructures at Room Temperature
• Unconventional charge-to-spin conversions in graphene/MoTe2 van der Waals heterostructures
• Omnidirectional spin-to-charge conversion in graphene/NbSe${}_2$ van der Waals heterostructures
• Optoelectronic manifestation of orbital angular momentum driven by chiral hopping in helical Se chains
• Berry curvature-induced local spin polarisation in gated graphene/WTe${}_2$ heterostructures
• Charge to Spin Conversion in van der Waals Metal NbSe2
• Charge-spin conversion signal in WTe2 van der Waals hybrid devices with a geometrical design
• Giant Rashba spin splitting in strained KTaO3 ultrathin films for circular photogalvanic currents
• Rashba Effect and Raman Spectra of Tl${}_2$O/PtS${}_2$ Heterostructure
• Room temperature nonlocal detection of charge-spin interconversion in a topological insulator
• In situ tuning of symmetry-breaking induced non-reciprocity in giant-Rashba semiconductor BiTeBr
• Large spin signal and spin rectification in folded-bilayer graphene
• Side-gate modulation of supercurrent in InSb nanoflag-based Josephson junctions
• Promoted current-induced spin polarization in inversion symmetry broken topological insulator thin films
• Reliability of spin-to-charge conversion measurements in graphene-based lateral spin valves