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Persistent spin textures are highly desirable for applications in spintronicsas they may allow for long carrier spin lifetimes. However, they are also rareas only four point groups can host such textures, and even for these fourgroups, the emergence of persistent spin textures requires a delicate balancebetween coupling parameters, which control the strength of spin-momentuminteractions. We use first-principles density functional simulations to predictthe possibility of achieving these desirable spin textures through theapplication of uniaxial stress. Hybrid organic-inorganic perovskite MPSnBr$_3$(MP = CH$_3$PH$_3$) is a ferroelectric semiconductor which exhibits persistentspin textures in the near to its conduction band minimum and mostly Rashba typein the vicinity of its valence band maximum. Application of uniaxial stressleads to the gradual evolution of the valence bands spin textures from mostlyRashba type to persistent ones under tensile load and to pure Rashba orpersistent ones under compressive load. We also report that the materialexhibits flexibility, rubber-like response, and both positive and negativepiezoelectric constants. Combination of such properties may createopportunities for a flexible/rubbery spintronic devices.

Persistent spin textures in halide perovskites induced by uniaxial stress