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Purely Cubic Spin Splittings with Persistent Spin Textures.

Hong Jian Zhao1,2, Hiro Nakamura1, Rémi Arras3

  • 1Physics Department, University of Arkansas, Fayetteville, Arkansas 72701, USA.

Physical Review Letters
|December 4, 2020
PubMed
Summary
This summary is machine-generated.

We discovered symmetry-enforced purely cubic spin splittings (SEPCSS) in insulators, complementary to existing types. These findings may enable new spin-orbitronic devices and phenomena in various materials.

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Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Spintronics

Background:

  • Cubic spin splittings in bulk insulators are underexplored.
  • These phenomena hold potential for novel spin-orbitronic applications.

Purpose of the Study:

  • To investigate and report symmetry-enforced purely cubic spin splittings (SEPCSS).
  • To explore their potential for persistent spin textures and complementary roles to existing spin splittings.

Main Methods:

  • Symmetry analysis
  • First-principles simulations

Main Results:

  • Discovery of symmetry-enforced purely cubic spin splittings (SEPCSS).
  • SEPCSS can lead to persistent spin textures.
  • These splittings are complementary to cubic Rashba and Dresselhaus types.

Conclusions:

  • SEPCSS are predicted in materials with 6m2 and 6 point groups.
  • Potential candidate materials include Ge3Pb5O11, Pb7Br2F12, and Pb7Cl2F12.