On the use of bismuth in quantum wells

Dauscher, A.; Lenoir, Bertrand; Boffoue, O.; Devaux, Xavier; Martin-Lopez, R.; Scherrer, H.

doi:10.1109/ict.1997.667177

Cited by 4 publications

(1 citation statement)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The recent development of novel preparation methods [1,2], resulting in improved, highquality, thin films of bismuth [3], has led to an increase in the research effort devoted to experimental and application-oriented aspects. The semimetal bismuth films, due to their characteristic electron energy band spectrum, are uniquely suited for the investigation of the galvanomagnetic coefficients under the electric field-effect (EFE) conditions in quantum-size (QS) systems with degenerate electron gas.…”

Section: Introductionmentioning

confidence: 99%

Application of an electric field-effect magnetoconductance method to quantum-size semimetal Bi films

Бутенко

Shvarts

Sandomirsky

et al. 2000

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

The electric field-effect magnetoconductance (EFE-MC) method was applied to study the quantum-size effect in semimetal Bi films. This method uses a magnetic field to adjust the quantum-size characteristics of a semimetal film-in particular, the ratio of the mobilities of the electrons and holes. We present a theoretical analysis of the EFE-MC method and demonstrate its strength experimentally. The characteristic of the quantum-size state of Bi films, namely the ratio of the densities of states of the electron and hole bands, g n /g p , and its relation to the ratio of the hole and electron mobilities, µ p /µ n , was obtained by determining the crossover magnetic field H 0 , at which the EFE-MC changes sign. We demonstrate also that the EFE-MC results prove the absence of charge-carrier trapping by showing that all of the extra charge carriers introduced by the EFE contribute to the conductance. The results obtained are in excellent agreement with those obtained in the absence of a magnetic field, and provide an independent confirmation of the latter interpretation.

show abstract

Section: Introductionmentioning

confidence: 99%