Tunable spin-gaps in a quantum-confined geometry

Abstract

We have studied the interplay of a giant spin-orbit splitting and of quantum confinement in artificial Bi-Ag-Si trilayer structures. Angle-resolved photoelectron spectroscopy (ARPES) reveals the formation of a complex spin-dependent gap structure, which can be tuned by varying the thickness of the Ag buffer layer. This provides a means to tailor the electronic structure at the Fermi energy, with potential applications for silicon-compatible spintronic devices.

References in corpus (4)

• Direct electronic measurement of the spin Hall effect
• Giant Spin-splitting in the Bi/Ag(111) Surface Alloy
• Interface effects in spin-dependent tunneling
• Two-domains bulklike Fermi surface of Ag films deposited onto Si(111)-(7x7)

Cited by in corpus (18)

• Large tuneable Rashba spin splitting of a two-dimensional electron gas in Bi2Se3
• Silicon surface with giant spin-splitting
• Rashba-Dresselhaus spin-splitting in the bulk ferroelectric oxide BiAlO${}_3$
• A band structure scenario for the giant spin-orbit splitting observed at the Bi/Si(111) interface
• Covariant conservation laws and the spin Hall effect in Dirac-Rashba systems
• Direct Observation of Interband Spin-Orbit Coupling in a Two-Dimensional Electron System
• Engineering Topological Surface States and Giant Rashba Spin Splitting in BiTeI/Bi${}_2$Te${}_3$ Heterostructures
• Anisotropy effects on Rashba and topological insulator spin polarized surface states: a unified phenomenological description
• Interband spin-orbit coupling between anti-parallel spin states in Pb quantum well states
• Spin accumulation with spin-orbit interaction
• Ag-coverage-dependent symmetry of the electronic states of the Pt(111)-Ag-Bi interface: The ARPES view of a structural transition
• Tuning independently Fermi energy and spin splitting in Rashba systems: Ternary surface alloys on Ag(111)
• Evidence for large Rashba splitting in PtPb4 from Angle-Resolved Photoemission Spectroscopy
• Edge states and topological properties of electrons on the bismuth on silicon surface with giant spin-orbit coupling
• Combined large spin-splitting and one dimensional confinement in surface alloys
• Anisotropic spin gaps in BiAg${}_2$-Ag/Si(111)
• Magnetoelectric torque and edge currents caused by spin-orbit coupling
• Quantum states and linear response in dc and electromagnetic fields for charge current and spin polarization of electrons at Bi/Si interface with giant spin-orbit coupling