Rashba spin splitting and anomalous spin textures in the bulk ferroelectric oxide perovskite KIO₃

Abstract

The momentum-dependent Rashba and Dresselhaus spin-splitting has gained much attention for its highly promising applications in spintronics. Non-centrosymmetric structure and presence of spin-orbit coupling (SOC), lead to momentum-dependent spin-splitting of...

Coupled Spin-Valley, Rashba Effect, and Hidden Spin Polarization in WSi2N4 Family

“…The spin polarization of Bloch states is either parallel or antiparallel to the z -direction leading to the case of PST. These spin textures are different from widely reported locally existing persistent spin textures and are preserved in the whole BZ. − Therefore, the control of Fermi level to a specific part of BZ where PST occurs is not required. These full-zone persistent spin textures (FZPST) can be explained using the symmetry arguments.…”

Strain-driven topological quantum phase transition in (pseudo)cubic (mixed)-Cs/MA/FA halide perovskites

“…, where E⃑ is the electric field experienced by the electron and is the Pauli matrix vector and p⃑ represents the momenta. 63,64 In the absence of centrosymmetry, an internal electric field is created, leading to the removal of momentum degeneracy through Rashba coupling. Therefore, such a coupling should be considered while designing a model Hamiltonian.…”

Manipulation of Valley and Spin Properties in Two-Dimensional Janus WSiGeZ4 (Z = N, P, As) through Symmetry Control

“…10,32−34 The charge carriers with Rashba SOC experience a momentum-dependent effective magnetic field; hence, a spin-dependent velocity correction term arises. 33 Thus, the Rashba effect is extensively studied for SFETs and spin-to-charge interconversion. The spin-valley locking and the Rashba effect arising from the SOC are bringing tremendous attention to the flourishing field of valleytronics and spintronics.…”

“…The broken inversion symmetry is compulsory for valleytronics, since Berry curvature vanishes in centrosymmetric materials . Also, strong SOC in inversion asymmetric materials induces Rashba spin splitting, which is a critical ingredient in spin field-effect transistors (SFETs) . ,− The charge carriers with Rashba SOC experience a momentum-dependent effective magnetic field; hence, a spin-dependent velocity correction term arises . Thus, the Rashba effect is extensively studied for SFETs and spin-to-charge interconversion.…”