Volume 106, Number 6, June 2014
|Number of page(s)||5|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||19 June 2014|
Observation of diamagnetic effect in BaSnO3 via low-temperature magneto-photoluminescence spectroscopy
1 Department 1Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences Hefei 230031, Anhui, PRC
2 Department of Materials Science and Engineering, University of Science and Technology of China Hefei 230026, Anhui, PRC
3 High Magnetic Field Laboratory, Chinese Academy of Sciences - Hefei 230031, Anhui, PRC
Received: 17 January 2014
Accepted: 28 May 2014
Photoluminescence measurements for pure BaSnO3 are carried out at low temperatures and high magnetic fields, down to 4 K and up to 8 T, respectively. Multiple phonon replicas are observed in the near-infrared region, which allows for a quantitative estimation of the Huang-Rhys factor, . Due to the extremely narrow linewidth, a magnetic-field–induced nonlinear blueshift of the zero phonon line (ZPL) and a small increase of the phonon energy are clearly distinguishable. The magnetic-field dependence of the ZPL energies can be interpreted in terms of diamagnetic effects of the s-like local electronic state. The electron effective mass value of 0.14m0 is extracted from the best fitting.
PACS: 75.20.-g – Diamagnetism, paramagnetism, and superparamagnetism / 71.20.Dg – Alkali and alkaline earth metals / 78.55.-m – Photoluminescence, properties and materials
© EPLA, 2014
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.