ULTRAHIGH MAGNETIC FIELD OPTICAL STUDY OF SINGLE-WALLED CARBON NANOTUBES FILM
Abstract: Excitons in Single-Walled
Carbon Nanotubes (SWNTs) have emerged as an ideal candidate for exploring
one-dimensional (1-D) exciton physics. Exciton states which dominate optical
properties of SWNTs even at room temperature, are not clarify yet. The optical
absorption spectra of aligned SWNTs films under ultra high magnetic fields up
to 190 T are examined to investigate this issue. Shifting and splitting of the
absorption peaks due to Aharonov-Bohm effect was observed clearly above 80 T in
the configuration where the magnetic fields were applied in parallel to the
alignment of SWNTs. The lowest singlet exciton state has been determined
through the analysis of energy splitting of excitons by the application of
magnetic fields.
Penulis: Mukhtar Effendi,
Hiroyuki Yokoi, Nobutsuga Minami, Eiji Kominama, Shojiro Takeyama
Kode Jurnal: jpfisikadd110144
