Bibliographic Details
| Title: |
Measurement of phonon energy of Sb2Te3 by scanning tunneling microscope light-emission spectroscopy. |
| Authors: |
Uehara, Y.1 uehara@riec.tohoku.ac.jp, Kuwahara, M.2, Katano, S.1 |
| Source: |
Solid State Communications. Jan2014, Vol. 177, p29-32. 4p. |
| Subjects: |
Phonons, Antimony compounds, Scanning tunneling microscopy, Electron transitions, Laser pulses |
| Abstract: |
Abstract: We have measured the energy of the A2u phonon mode of Sb2Te3 by scanning tunneling microscope light-emission (STM-LE) spectroscopy combined with ps-pulsed laser irradiation of the STM tip-sample gap. It is known that the STM-LE from Sb2Te3 is excited by electronic transitions at a photon energy of around 1.6eV, i.e, a single peak with a narrow spectral width appears at the photon energy in the STM-LE spectrum. For STM-LE occurring with the STM tip-sample gap irradiated by ps laser pulses, several supplementary peaks appear in the STM-LE spectra (in addition to the single original peak). The difference in energy between adjacent peaks gives the phonon energy of the A2u mode of Sb2Te3. [Copyright &y& Elsevier] |
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| Database: |
Engineering Source |
