Spin chiralility effect in Telurrium nanowires

CIC nanoGUNE Seminars

Speaker
Luis Hueso, Nanodevices Group Leader
When
2022/07/04
13:00
Place
nanoGUNE seminar room, Tolosa Hiribidea 76, Donostia - San Sebastian
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Spin chiralility effect in Telurrium nanowires **Spin chiralility effect in Telurrium nanowires** Luis Hueso Nanodevices Group Leader [l.hueso@nanogune.eu](mailto:l.hueso@nanogune.eu) Chiral materials are the ideal playground for exploring the relation between symmetry, relativistic effects, and electronic transport. For instance, chiral organic molecules have been intensively studied to electrically generate spin- polarized currents in the last decade, but their poor electronic conductivity limits their potential for applications. Conversely, chiral inorganic materials such as Tellurium are excellent electrical transport materials, but have not been explored to enable the electrical control of spin polarization in devices. In this talk I will show the all-electrical generation, manipulation, and detection of spin polarization in chiral single-crystalline Tellurium nanowires. By recording a large (up to 7%) and chirality-dependent unidirectional magnetoresistance, we demonstrate that the orientation of the electrically generated spin polarization is determined by the nanowire’s handedness and uniquely follows the current direction, while its magnitude can be manipulated by an electrostatic gate.