Group delay in semiconductor structures with energy dependent effective mass
Abstract
We investigate tunneling times of a particle with energy dependent effective mass for a one-dimensional real potential. General relations between phase, group and dwell times are obtained for a desired potential shape. For the textbook case of a real rectangular potential barrier the explicit relations for relevant times are derived, which reveal that the nonparabolicity, depending on the energy of incident particle, may substantially increase the group time in realistic structures. Further, we extend this theory to the case of absorptive media, described by complex potentials, via introduction of a new absorptive tunneling time tau(a). Depending on whether the short wavelength or long wavelength limit is considered, maximization of tau(a) results in a very different shape of a complex rectangular potential.
Source:
Acta Physica Polonica A, 2007, 112, 5, 1037-1042Publisher:
- Polish Acad Sciences Inst Physics, Warsaw
DOI: 10.12693/APhysPolA.112.1037
ISSN: 0587-4246
PubMed:
WoS: 000251805100051
Scopus: 2-s2.0-37849018212
Institution/Community
Tehnološko-metalurški fakultetTY - JOUR AU - Kočinac, Saša AU - Milanović, V. PY - 2007 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1020 AB - We investigate tunneling times of a particle with energy dependent effective mass for a one-dimensional real potential. General relations between phase, group and dwell times are obtained for a desired potential shape. For the textbook case of a real rectangular potential barrier the explicit relations for relevant times are derived, which reveal that the nonparabolicity, depending on the energy of incident particle, may substantially increase the group time in realistic structures. Further, we extend this theory to the case of absorptive media, described by complex potentials, via introduction of a new absorptive tunneling time tau(a). Depending on whether the short wavelength or long wavelength limit is considered, maximization of tau(a) results in a very different shape of a complex rectangular potential. PB - Polish Acad Sciences Inst Physics, Warsaw T2 - Acta Physica Polonica A T1 - Group delay in semiconductor structures with energy dependent effective mass EP - 1042 IS - 5 SP - 1037 VL - 112 DO - 10.12693/APhysPolA.112.1037 ER -
@article{ author = "Kočinac, Saša and Milanović, V.", year = "2007", abstract = "We investigate tunneling times of a particle with energy dependent effective mass for a one-dimensional real potential. General relations between phase, group and dwell times are obtained for a desired potential shape. For the textbook case of a real rectangular potential barrier the explicit relations for relevant times are derived, which reveal that the nonparabolicity, depending on the energy of incident particle, may substantially increase the group time in realistic structures. Further, we extend this theory to the case of absorptive media, described by complex potentials, via introduction of a new absorptive tunneling time tau(a). Depending on whether the short wavelength or long wavelength limit is considered, maximization of tau(a) results in a very different shape of a complex rectangular potential.", publisher = "Polish Acad Sciences Inst Physics, Warsaw", journal = "Acta Physica Polonica A", title = "Group delay in semiconductor structures with energy dependent effective mass", pages = "1042-1037", number = "5", volume = "112", doi = "10.12693/APhysPolA.112.1037" }
Kočinac, S.,& Milanović, V.. (2007). Group delay in semiconductor structures with energy dependent effective mass. in Acta Physica Polonica A Polish Acad Sciences Inst Physics, Warsaw., 112(5), 1037-1042. https://doi.org/10.12693/APhysPolA.112.1037
Kočinac S, Milanović V. Group delay in semiconductor structures with energy dependent effective mass. in Acta Physica Polonica A. 2007;112(5):1037-1042. doi:10.12693/APhysPolA.112.1037 .
Kočinac, Saša, Milanović, V., "Group delay in semiconductor structures with energy dependent effective mass" in Acta Physica Polonica A, 112, no. 5 (2007):1037-1042, https://doi.org/10.12693/APhysPolA.112.1037 . .