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TT: Fachverband Tiefe Temperaturen

TT 60: Spintronics (other effects) (joint session MA/TT)

TT 60.7: Talk

Wednesday, March 11, 2026, 17:00–17:15, POT/0112

Magnetic hyperfine fields in solids without inversion symmetry induced by an external electric field — •Alberto Marmodoro^1,2,3,4, Hubert Ebert¹, Sergiy Mankovsky¹, and Jan Minar³ — ¹LMU Munich, Munich, DE — ²Inst. of Physics of the Czech Acad. of Sci., Prague, CZ — ³University of West Bohemia, Pilsen, CZ — ⁴Czech Technical University., Prague, CZ

An electric field induces in a solid without inversion symmetry spin and orbital magnetization - a phenomenon called Edelstein effect. This induced magnetization has to have its counterpart in an induced magnetic hyperfine field seen by nuclear magnetic moments. Corresponding NMR experiments have been performed recently on Te with success [1]. Using Kubo’s linear response formalism implemented on the basis of the relativistic Korringa-Kohn-Rostoker Green function technique a description for the field induced hyperfine field (EFI-HFF) has been developed in analogy to that for the spin and orbital Edelstein effect [2]. The EFI-HFF drastically differs from that induced by an external magnetic field as the later one does not need missing inversion symmetry. Making use of a Gordon decomposition of the electronic current a splitting of the EFI-HFF into its spin and orbital parts is achieved [3]. This allows to discuss them in relation to their counterparts concerning the magnetization as well as the role of the spin-orbit coupling for them. Corresponding numerical results are presented for Te.

[1] T. Furukawa et al., Phys. Rev. Res., 3, 023111 (2021). [2] S. Wimmer et al. Phys. Rev B, 103, 024437 (2021). [3] M. Battocletti and H. Ebert, Phys. Rev. B, 64, 094417 (2001).

Keywords: Kubo's linear response; DFT calculations; Edelstein effect; hyperfine field; spin-orbit coupling