Study of Dy-doped Bi2Te3: thin film growth and magnetic properties
Journal of Physics Condensed Matter IOP Publishing 27:24 (2015) 245602
Universal Magnetic Hall Circuit Based on Paired Spin Heterostructures
Advanced Electronic Materials Wiley 1:6 (2015)
A New Topological Insulator Built From Quasi One-Dimensional Atomic Ribbons
Physica Status Solidi - Rapid Research Letters Wiley 9:2 (2015) 130-135
Abstract:
A novel topological insulator with orthorhombic crystal structure is demonstrated. It is characterized by quasi one-dimensional, conducting atomic chains instead of the layered, two-dimensional sheets known from the established Bi2(Se,Te)3 system. The Sb-doped Bi2Se3 nanowires are grown in a TiO2-catalyzed process by chemical vapor deposition. The binary Bi2Se3 is transformed from rhombohedral to orthorhombic by substituting Sb on ~38% of the Bi sites. Pure Sb2Se3 is a topologically trivial band insulator with an orthorhombic crystal structure at ambient conditions, and it is known to transform into a topological insulator at high pressure. Angle-resolved photoemission spectroscopy shows a topological surface state, while Sb doping also tunes the Fermi level to reside in the bandgap.X-ray magnetic spectroscopy of MBE-grown Mn-doped Bi2Se3 thin films
AIP Advances AIP Publishing 4:12 (2014) 127136
Vapour-liquid-solid growth of ternary Bi2Se2Te nanowires
Discover Nano Springer Nature 9:1 (2014) 127