Publications (24)
Resonance-type thickness dependence of optical second harmonic generation in thin-films of the topological insulator Bi2Se3
Yuri D. Glinka, Sercan Babakiray, Trent A. Johnson +2
Optical second harmonic generation (SHG) has been measured for the first time in reflection from the nanometer-thick films (6 to 40 nm) of the topological insulator Bi2Se3 using 1.…
Direct Visualization of Relativistic Quantum Scars
Zhehao Ge, Anton M. Graf, Joonas Keski-Rahkonen +9
Quantum scars refer to eigenstates with enhanced probability density along unstable classical periodic orbits (POs). First predicted 40 years ago, scars are special eigenstates tha…
Nonlinear Optical Observation of Coherent Acoustic Dirac Plasmons in Thin-Film Topological Insulators
Yuri D. Glinka, Sercan Babakiray, Trent A. Johnson +2
Low-energy collective electronic excitations exhibiting sound-like linear dispersion have been intensively studied both experimentally and theoretically for a long time. However, c…
Preparation, characterization, and electrical properties of epitaxial NbO2 thin film lateral devices
Toyanath Joshi, Tess R. Senty, Pavel Borisov +2
Epitaxial NbO2 (110) films, 20 nm thick, were grown by pulsed laser deposition on Al2O3 (0001) substrates. The Ar/O2 total pressure during growth was varied to demonstrate the grad…
Surface state mediated ferromagnetism in MnBiTe thin films
Ryan Van Haren, Toyanath Joshi, David Lederman
A spontaneous ferromagnetic moment can be induced in BiTe thin films below a temperature T 16 K by the introduction of Mn dopants. We demonstrate that films g…
Acoustic phonon dynamics in thin-films of the topological insulator Bi2Se3
Yuri D. Glinka, Sercan Babakiray, Trent A. Johnson +2
Transient reflectivity traces measured for nanometer-sized films of the topological insulator Bi2Se3 revealed GHz-range oscillations driven within the relaxation of hot carriers ph…