Anisotropy of spin coherence in high mobility quantum wells with arbitrary magnetic fields

Abstract

We present a theoretical study of the anisotropy of the spin relaxation and decoherence in typical quantum wells with an arbitrary magnetic field. In such systems, the orientation of the magnetic field relative to the main crystallographic directions is crucial, owing to the lack of spin-rotation symmetry. For typical high mobility samples, relaxation anisotropies in the motional narrowing limit owing to the interplay of Rashba and Dresselhaus spin orbit coupling are calculated. We also include the effect of the cubic-in-momentum terms. Although commonly ignored in literature, the latter were experimentally evidenced by the observation of strong anisotropy in spin decoherence measurements by different experimental groups and has long remained unexplained.

10 pages, 4 figures

References in corpus (9)

• Driven coherent oscillations of a single electron spin in a quantum dot
• Cubic Rashba spin-orbit interaction of two-dimensional hole gas in strained-Ge/SiGe quantum well
• Spin and valley-orbit splittings in SiGe/Si heterostructures
• Duality of the spin and density dynamics for two-dimensional electrons with a spin-orbit coupling
• Dark Bell states in tunnel-coupled spin qubits
• Spin-orbit interaction and spin relaxation in a two-dimensional electron gas
• High Fidelity Singlet-Triplet $S$-$T_{-}$ Qubits in Inhomogeneous Magnetic Fields
• Impurity-driven intervalley spin-flip scattering-induced 2D spin relaxation in silicon
• Electron spin coherence in Si/SiGe quantum wells

Cited by in corpus (2)

• Three-electron spin qubits
• Electric nonadiabatic geometric entangling gates on spin qubits