Related Experiment Video
Updated: Feb 11, 2026

Evaluating Plasmonic Transport in Current-carrying Silver Nanowires
Published on: December 11, 2013
Thermoelectric current in topological insulator nanowires with impurities
Sigurdur I Erlingsson1, Jens H Bardarson2, Andrei Manolescu1
1School of Science and Engineering, Reykjavik University, Menntavegur 1, IS-101 Reykjavik, Iceland.
Abstract:
In this paper we consider charge current generated by maintaining a temperature difference over a nanowire at zero voltage bias. For topological insulator nanowires in a perpendicular magnetic field the current can change sign as the temperature of one end is increased. Here we study how this thermoelectric current sign reversal depends on the magnetic field and how impurities affect the size of the thermoelectric current. We consider both scalar and magnetic impurities and show that their influence on the current are quite similar, although the magnetic impurities seem to be more effective in reducing the effect. For moderate impurity concentration the sign reversal persists.
More Related Videos
Related Concept Videos
Conductors and Insulators
Most metals are conductors. Their atomic configuration is such that one or more electron(s) are loosely bound to the nucleus in each atom. Thus, a sea of mobile electrons are available in them, known as free electrons. Their easy...
Insulation Coordination
Thermal Insulation in Masonry Walls
External insulation can be applied using an Exterior Insulation and Finish System (EIFS), which involves affixing panels of plastic foam to the wall and covering them with a polymeric stucco reinforced with glass fiber mesh....
Pharmaceutical Alternatives: Excipients and Impurities-Related Therapeutic Nonequivalence
Electrical Current
Current Density

