Two-dimensional Bloch electrons under strong magnetic modulation
Visualitza/
Metadades
Mostra el registre complet de l'elementcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/7013
comunitat-uji-handle3:10234/8638
comunitat-uji-handle4:
INVESTIGACIONMetadades
Títol
Two-dimensional Bloch electrons under strong magnetic modulationData de publicació
2011-01-13Editor
American Physical SocietyISSN
1098-0121; 1550-235XCita bibliogràfica
Physical Review B (2011) vol. 83, no. 1Tipus de document
info:eu-repo/semantics/articleVersió de l'editorial
http://link.aps.org/doi/10.1103/PhysRevB.83.014410Versió
info:eu-repo/semantics/publishedVersionParaules clau / Matèries
Resum
The band structure of a high-mobility two-dimensional electron gas patterned with a square lattice of holes (antidots) is studied theoretically under the influence of a magnetic modulation consisting of perpendicular ... [+]
The band structure of a high-mobility two-dimensional electron gas patterned with a square lattice of holes (antidots) is studied theoretically under the influence of a magnetic modulation consisting of perpendicular magnetic flux tubes with the same period and nonzero net flux per unit cell. The magnetic field pierces the system through the patterned holes only, so that the coupling with the electrons is purely quantum mechanical. The model takes implicitly into account the coupling between the different Bloch bands. The flux-dependent energy structure exhibits a Hofstadter butterfly-type spectrum. Such a structure is repeated indefinitely without distortion with a period of one magnetic flux quantum through a lattice hole. Rectangular deviations from the square lattice are also studied. It is found that the number and width of the magnetic gaps decrease, and even disappear for large antidot filling fractions. [-]
Drets d'accés
© American Physical Society
http://rightsstatements.org/vocab/InC/1.0/
info:eu-repo/semantics/openAccess
http://rightsstatements.org/vocab/InC/1.0/
info:eu-repo/semantics/openAccess
Apareix a les col.leccions
- QFA_Articles [829]