TY - JOUR
T1 - Magneto-conductivity and magnetically-controlled nonlinear optical transmittance in multi-wall carbon nanotubes
AU - García-Merino, J. A.
AU - Martínez-González, C. L.
AU - Torres-San Miguel, C. R.
AU - Trejo-Valdez, M.
AU - Martínez-Gutiérrez, H.
AU - Torres-Torres, C.
N1 - Publisher Copyright:
© 2016 Optical Society of America.
PY - 2016/8/22
Y1 - 2016/8/22
N2 - The impact of vectorial magnetic field effects on electrical conductivity and nonlinear optical transmittance exhibited by multi-wall carbon nanotubes was studied. The samples were synthetized by an aerosol pyrolysis processing route in a thin film form. Optical signals in a two-wave mixing configuration allowed us to identify two orthogonal directions of propagation for a magnetic field travelling through the nanomaterials studied. A selective modification in optical absorption was considered to be induced by magnetic perturbations in the sample. Standard optical Kerr gate measurements were carried out for exploring the third order nonlinear optical behavior of the film. A capacitive effect influenced by optical and magnetic excitations was distinguished to be characteristic of the sample. Magneto-quantum conductivity sensitive to the direction of an external magnetic field interacting with the tubes was analyzed. Magnetically-induced changes in electronic band parameters seem to be the main responsible for the optical and electrical modulation observed in the nanostructures. Immediate applications for developing magneto-optical and magneto-electrical functions can be contemplated.
AB - The impact of vectorial magnetic field effects on electrical conductivity and nonlinear optical transmittance exhibited by multi-wall carbon nanotubes was studied. The samples were synthetized by an aerosol pyrolysis processing route in a thin film form. Optical signals in a two-wave mixing configuration allowed us to identify two orthogonal directions of propagation for a magnetic field travelling through the nanomaterials studied. A selective modification in optical absorption was considered to be induced by magnetic perturbations in the sample. Standard optical Kerr gate measurements were carried out for exploring the third order nonlinear optical behavior of the film. A capacitive effect influenced by optical and magnetic excitations was distinguished to be characteristic of the sample. Magneto-quantum conductivity sensitive to the direction of an external magnetic field interacting with the tubes was analyzed. Magnetically-induced changes in electronic band parameters seem to be the main responsible for the optical and electrical modulation observed in the nanostructures. Immediate applications for developing magneto-optical and magneto-electrical functions can be contemplated.
UR - http://www.scopus.com/inward/record.url?scp=84991071498&partnerID=8YFLogxK
U2 - 10.1364/OE.24.019552
DO - 10.1364/OE.24.019552
M3 - Artículo
SN - 1094-4087
VL - 24
SP - 19552
EP - 19557
JO - Optics Express
JF - Optics Express
IS - 17
ER -