Thin Films with 2D Behavior and Linear Galvanomagnetic Response
Abstract
This was a very successful project that culminated in important discoveries, supported one Ph.D. student, four Master's Students and resulted in six publications. The main focus of the study was the magnetotransport behavior of magnetron sputtered thin films of Bi semimetal systems and topological insulators such as Bi2Te3. More specifically, Bi thin films were deposited at temperatures ranging from room temperature to 300 deg C. The magnetotransport properties were mainly studied for sample deposited at 80 deg C. The formation of equilibrium crystals at depositions at 271 deg C (melting point of Bi) was also of outmost interest and the crystals were examined in terms of their shape and size. The study of Bi2Te3 topological insulator thin films was based on the breaking of time-reversal symmetry. For this reason the systems examined were either doped with magnetic moments (Co, Cr, Mn, V, Sm) or interfaced with magnetic layers such as Co to induce magnetic proximity effects. Another system that was considered interesting to study was the interfaced topological insulator Bi2Te3 with superconducting Nb for the examination of topological superconductivity.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 12, 2023
- Accession Number
- AD1226621
Entities
People
- Athanassios Speliotis
Organizations
- National Center for Scientific Research