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Atomic and Electronic Structure of a Multidomain GeTe Crystal by Alexander S. Frolov; Jaime Sánchez-Barriga; Carolien Callaert; Joke Hadermann; Alexander V. Fedorov; Dmitry Yu. Usachov; Alexander N. Chaika; Brian C. Walls; Kuanysh Zhussupbekov; Igor V. Shvets; Matthias Muntwiler; Matteo Amati; Luca Gregoratti; Andrei Yu. Varykhalov; Oliver Rader; Lada V. Yashina is a Engineering article available to read on EtoBox.
What is Atomic and Electronic Structure of a Multidomain GeTe Crystal about?
Renewed interest in the ferroelectric semiconductor germanium telluride was recently triggered by the direct observation of a giant Rashba effect and a 30-year-old dream about a functional spin field-effect transistor. In this respect, all-electrical control of the spin texture in this material in combination with ferroelectric properties at the nanoscale would create advanced functionalities in spintronics and data information processing. Here, we investigate the atomic and electronic properties of GeTe bulk single crystals and their (111) surfaces. We succeeded in growing crystals possessing solely inversion domains of ∼10 nm thickness parallel to each other. Using HAADF-TEM we observe two types of domain boundaries, one of them being similar in structure to the van der Waals gap in layered materials. This structure is responsible for the formation of surface domains with preferential Te-termination (∼68%) as we determined using photoelectron diffraction and XPS. The lateral dimensions of the surface domains are in the range of ∼10-100 nm, and both Ge- and Te-terminations reveal no reconstruction. Using spin-ARPES we establish an intrinsic quantitative relationship between the sp
Who reads Atomic and Electronic Structure of a Multidomain GeTe Crystal?
It is typically read by researchers, students, and practitioners in Engineering.
- Author
- Alexander S. Frolov; Jaime Sánchez-Barriga; Carolien Callaert; Joke Hadermann; Alexander V. Fedorov; Dmitry Yu. Usachov; Alexander N. Chaika; Brian C. Walls; Kuanysh Zhussupbekov; Igor V. Shvets; Matthias Muntwiler; Matteo Amati; Luca Gregoratti; Andrei Yu. Varykhalov; Oliver Rader; Lada V. Yashina
- Publisher
- American Chemical Society; American Chemical Society (ACS) (ISSN 1936-0851)
- Published
- 2020
- Language
- EN
- Field
- Engineering (Physical Sciences)