6533b82efe1ef96bd12928f9
RESEARCH PRODUCT
Quantum size effects in a one-dimensional semimetal
Shadyar Farhangfarsubject
PhysicsCondensed Matter - Mesoscale and Nanoscale PhysicsMagnetoresistanceCondensed matter physicsbusiness.industryNanowireFOS: Physical sciencesCondensed Matter PhysicsCondensed Matter::Mesoscopic Systems and Quantum Hall EffectBoltzmann equationSemimetalElectronic Optical and Magnetic MaterialsCondensed Matter::Materials ScienceSemiconductorHall effectQuantum mechanicsSeebeck coefficientMesoscale and Nanoscale Physics (cond-mat.mes-hall)Condensed Matter::Strongly Correlated ElectronsbusinessTransport phenomenadescription
We study theoretically the quantum size effects in a one-dimensional semimetal by a Boltzmann transport equation. We derive analytic expressions for the electrical conductivity, Hall coefficient, magnetoresistance, and the thermoelectric power in a nanowire. The transport coefficients of semimetal oscillate as the size of the sample shrinks. Below a certain size the semimetal evolves into a semiconductor. The semimetal-semiconductor transition is discussed quantitatively. The results should make a theoretical ground for better understanding of transport phenomena in low-dimensional semimetals. They can also provide useful information while studying low-dimensional semiconductors in general.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2006-11-17 |