Modulating the electronic properties along carbon nanotubes via tube-substrate interaction.
We study single wall carbon nanotubes (SWNTs) deposited on quartz. Their Raman spectrum depends on the tube-substrate morphology, and in some cases, it shows that the same SWNT-on-quartz system exhibits a mixture of semiconductor and metal behavior, depending on the orientation between the tube and the substrate. We also address the problem using electric force microscopy and ab initio calculations, both showing that the electronic properties along a single SWNT are being modulated via tube-substrate interaction.
Departamento de Física, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil.
Jaqueline S
JS
Soares
Ana Paula M
AP
Barboza
Paulo T
PT
Araujo
Newton M
NM
Barbosa Neto
Denise
D
Nakabayashi
Nitzan
N
Shadmi
Tohar S
TS
Yarden
Ariel
A
Ismach
Noam
N
Geblinger
Ernesto
E
Joselevich
Cecilia
C
Vilani
Luiz G
LG
Cançado
Lukas
L
Novotny
Gene
G
Dresselhaus
Mildred S
MS
Dresselhaus
Bernardo R A
BR
Neves
Mario S C
MS
Mazzoni
Ado
A
Jorio