RT journal article
T1 Localization and Directionality of Surface Transport in Bi2Te3 Ordered 3D Nanonetworks
A1 Ruiz-Clavijo, Alejandra
A1 Caballero-Calero, Olga
A1 Blanco, Javier
A1 Peiró, Francesca
A1 Plana-Ruiz, Sergi
A1 López Haro, Miguel
A1 Nielsch, K.
A1 Martín-González, Marisol
A2 Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica
K1 metamaterials
K1 bismuth telluride
K1 3D-AAO
K1 nanonetwork
K1 surface transport
K1 localization effects
AB The resistance of an ordered 3D-Bi2Te3 nanowire nanonetwork was studied at low temperatures. Below 50 K the increase in resistancewas found to be compatible with the Anderson model for localization,considering that conduction takes place in individual parallel channelsacross the whole sample. Angle-dependent magnetoresistance measurements showed a distinctive weak antilocalization characteristic with adouble feature that we could associate with transport along twoperpendicular directions, dictated by the spatial arrangement of thenanowires. The coherence length obtained from the Hikami−Larkin−Nagaoka model was about 700 nm across transversal nanowires, whichcorresponded to approximately 10 nanowire junctions. Along the individualnanowires, the coherence length was greatly reduced to about 100 nm. Theobserved localization effects could be the reason for the enhancement of theSeebeck coefficient observed in the 3D-Bi2Te3 nanowire nanonetworkcompared to individual nanowires.
PB ACS Publications
SN 1936-086X
YR 2023
FD 2023
LK http://hdl.handle.net/10498/31719
UL http://hdl.handle.net/10498/31719
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 13-nov-2026