Magnetoconductance anisotropy of a polymer thin film at the onset of metallicity
Artikel i vetenskaplig tidskrift, 2015

Thin films of poly(2,5-bis(3-dodecyl-2-yl)-thieno[3,2-b] thiophene) (C12-PBTTT) polymer under electrolyte gating and doping are investigated as model systems for organic thin films devices approaching the metallic side of a metal-insulator (M-I) transition. For the most doped samples, with an estimated density reaching 8 x 10(20) cm(-3) holes and a conductivity exceeding 1000 S cm(-1), a positive high-field magnetoconductance is found in a limited temperature range window and only when the field is perpendicular to the sample plane. This signature of weak localization, combined with indications of finite zero-temperature conductivity, allows us to identify delocalized metallic-like transport in these thin films, even though the conductivity decreases when cooling down the samples.

Författare

S. Zanettini

Universite de Strasbourg

J. F. Dayen

Universite de Strasbourg

C. Etrillard

Universite de Strasbourg

N. Leclerc

UMR 7515 CNRS-UdS

Venkata Kamalakar Mutta

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

B. Doudin

Universite de Strasbourg

Applied Physics Letters

0003-6951 (ISSN) 1077-3118 (eISSN)

Vol. 106 Art. no. 063303- 063303

Ämneskategorier

Materialteknik

Annan teknik

DOI

10.1063/1.4908526