Multi-band energy spectra of spin-1/2 electrons with two-dimensional magnetic modulations
| dc.creator | Chang, Ming-Che | |
| dc.creator | Yang, Min-Fong | |
| dc.date | 1997-11-24 | |
| dc.date.accessioned | 2026-07-07T06:26:26Z | |
| dc.date.available | 2026-07-07T06:26:26Z | |
| dc.description | The energy spectra of spin-1/2 electrons under two-dimensional magnetic field modulations are calculated beyond the one-band approximation. Our formulation is generally applicable to a modulation field with a rectangular lattice symmetry. The field distribution within a plaquette is otherwise arbitrary. The spectra being obtained are qualitatively different from their electric modulated counterparts. Peculiar features of the spectra are that, for an electron with a g factor precisely being equal to two, no matter how strong the modulation is, the zero-energy level seems to be unaffected by the modulation and is separated from higher energy levels with a nonzero energy gap. Moreover, there is a two-fold degenerancy for all states with positive energies with respect to spin flip. These features agree with earlier analytical studies of the periodically magnetic modulated systems. | |
| dc.description | 12 pages, latex, 8 figures | |
| dc.identifier | https://arxiv.org/abs/cond-mat/9711252 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/9711252 | |
| dc.identifier | Phys. Rev. B 57, 013002 (1998) | |
| dc.identifier | doi:10.1103/PhysRevB.57.13002 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/97104 | |
| dc.subject | Mesoscale and Nanoscale Physics | |
| dc.title | Multi-band energy spectra of spin-1/2 electrons with two-dimensional magnetic modulations | |
| dc.type | text |