Femtosecond laser pulses are used to excite coherent optical phonons in single crystal Bi2Te3 thin films. Oscillations from lowand high-frequency A1g phonon modes are observed. A perturbation model based on molecular dynamics reveals various possibilities of phonon generation due to complex interactions among different phonon modes. In order to elucidate the process of phonon generation, measur...

Angle-dependent magnetoconductance was measured on an individual surface-curved Bi2Te3 single-crystal nanowire fabricated by electrochemical deposition, where the evolution of surface conduction with wire diameters was investigated. It was found that the magnetoconductance of these nanowires in low field regime can be well described by one-dimensional (1D) weak antilocalization (WAL) model, whe...

Related Articles Electronic structure and thermoelectric properties of nanostructured EuTi1−xNbxO3−δ (x=0.00; 0.02) Appl. Phys. Lett. 101, 033908 (2012) Electrical and thermoelectric properties of single-wall carbon nanotube doped Bi2Te3 Appl. Phys. Lett. 101, 031909 (2012) Transport, thermoelectric, and magnetic properties of a dense Cr2S3 ceramic J. Appl. Phys. 112, 013716 (2012) Origin of n-...

Bi2Te3 has an extensive application as thermoelectric materials. Here, large scale single-crystal hexagonal nanoplates(NPs) with size of 0.4–0.8 μm were synthesized successfully by hydro-thermal method. X-ray diffraction (XRD), scanning electron microscope (SEM), and transmission (TEM) used to characterize the nanoplates, which confirm single crystal quality smooth surface morphology size. We d...