Record number :
1259756
Title of article :
Direct observation of dark exciton states in single carbon nanotubes
Author/Authors :
Ryusuke Matsunaga، نويسنده , , Kazunari Matsuda، نويسنده , , Yoshihiko Kanemitsu، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2009
Pages :
4
From page :
1702
To page :
1705
Abstract :
We have studied magneto-photoluminescence (PL) spectra of a single carbon nanotube at low temperatures. A single PL peak arising from optically allowed (bright) exciton state was observed under the zero-magnetic field, and an additional PL peak from optically forbidden (dark) exciton state was enhanced with increasing the magnetic field. Excitons populate in the lower dark state at low temperatures, and the optically forbidden transition is observed due to the Aharonov–Bohm effect.
Keywords :
Magneto-photoluminescence , Carbon nanotube , Aharonov–Bohm effect , Single object spectroscopy
Journal title :
Journal of Luminescence
Link To Document :