Volume 112, Number 3, November 2015
|Number of page(s)||5|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||26 November 2015|
Ultrafast spin polarization in a multiferroic manganite BiFe0.5Mn0.5O3 thin film
1 Department of Physics, Shanghai University - Shanghai 200444, China
2 Institute for Superconducting and Electronic Materials, University of Wollongong - New South Wales 2500, Australia
3 Department of Materials Science and Engineering, Wuhan Institute of Technology - 693 Xiongchu Road, Wuhan 430073, China
4 National Institute for Materials Science - Sengen 1-2-1, Tsukuba, Ibaraki 305-0047, Japan
Received: 23 September 2015
Accepted: 2 November 2015
In this work, we present observations of ultrafast carrier dynamics and spin polarization in a multiferroic manganite BiFe0.5Mn0.5O3 film excited by linearly and circularly polarized femtosecond pulses, respectively. The d-band charge transfer transition is reasonably assigned to . The transient reflectivity decay on a time scale as fast as only 0.3 ps is consistent with the picture of ultrafast electron-phonon coupling. The ultrafast switching of polarization ellipticity (< 150 fs) originates from a transient coherent spin polarization by optical orientation. The ultrafast spin polarization switching is assigned to the Raman coherence process.
PACS: 78.47.J- – Ultrafast spectroscopy (<1 psec) / 78.20.-e – Optical properties of bulk materials and thin films / 75.47.Lx – Magnetic oxides
© EPLA, 2015
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.