Landau-level lifetimes in PbTe nipi superlattices, PbTe/PbEuTe and InAs/AlSb quantum wells

C. J G M Langerak; B. N. Murdin; C. M. Ciesla; J. Oswald; A. Homer; G. Springholz; G. Bauer; R. A. Stradling; M. Kamal-Saadi; E. Gornik; C. R. Pidgeon

doi:10.1016/S1386-9477(98)00027-7

Landau-level lifetimes in PbTe nipi superlattices, PbTe/PbEuTe and InAs/AlSb quantum wells

C. J G M Langerak, B. N. Murdin, C. M. Ciesla, J. Oswald, A. Homer, G. Springholz, G. Bauer, R. A. Stradling, M. Kamal-Saadi, E. Gornik, C. R. Pidgeon

School of Engineering & Physical Sciences

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Abstract

Landau-level lifetimes are determined from saturation cyclotron resonance (CR) in wide parabolic wells, quantum wells and bulk PbTe-Pb_{1 - x}Eu_xTe systems. These narrow gap structures exhibit strong band non-parabolicity necessary to terminate the normally equi-spaced Landau-level ladder. It was not possible to saturate the bulk sample, but short lifetimes, of between 1.5 and 8 ps, were obtained for the wide parabolic well and the quantum well, respectively, utilising a multi-level rate equation model. We also report the first pump-probe cyclotron resonance result in an InAs-AlSb quantum structure. The pump-probe experiment provides a direct determination of the lifetime, giving t = 40 ps in this InAs-AlSb sample. This shows good agreement with an 8 × 8k · p calculation. © 1998 Elsevier Science B.V. All rights reserved.

Original language	English
Pages (from-to)	121-125
Number of pages	5
Journal	Physica E: Low-Dimensional Systems and Nanostructures
Volume	2
Issue number	1-4
DOIs	https://doi.org/10.1016/S1386-9477(98)00027-7
Publication status	Published - 15 Jul 1998

Keywords

Landau-level lifetimes
Saturation spectroscopy

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10.1016/S1386-9477(98)00027-7

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Langerak, C. J. G. M., Murdin, B. N., Ciesla, C. M., Oswald, J., Homer, A., Springholz, G., Bauer, G., Stradling, R. A., Kamal-Saadi, M., Gornik, E., & Pidgeon, C. R. (1998). Landau-level lifetimes in PbTe nipi superlattices, PbTe/PbEuTe and InAs/AlSb quantum wells. Physica E: Low-Dimensional Systems and Nanostructures, 2(1-4), 121-125. https://doi.org/10.1016/S1386-9477(98)00027-7

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title = "Landau-level lifetimes in PbTe nipi superlattices, PbTe/PbEuTe and InAs/AlSb quantum wells",

abstract = "Landau-level lifetimes are determined from saturation cyclotron resonance (CR) in wide parabolic wells, quantum wells and bulk PbTe-Pb1 - xEuxTe systems. These narrow gap structures exhibit strong band non-parabolicity necessary to terminate the normally equi-spaced Landau-level ladder. It was not possible to saturate the bulk sample, but short lifetimes, of between 1.5 and 8 ps, were obtained for the wide parabolic well and the quantum well, respectively, utilising a multi-level rate equation model. We also report the first pump-probe cyclotron resonance result in an InAs-AlSb quantum structure. The pump-probe experiment provides a direct determination of the lifetime, giving t = 40 ps in this InAs-AlSb sample. This shows good agreement with an 8 × 8k · p calculation. {\textcopyright} 1998 Elsevier Science B.V. All rights reserved.",

keywords = "Landau-level lifetimes, Saturation spectroscopy",

author = "Langerak, {C. J G M} and Murdin, {B. N.} and Ciesla, {C. M.} and J. Oswald and A. Homer and G. Springholz and G. Bauer and Stradling, {R. A.} and M. Kamal-Saadi and E. Gornik and Pidgeon, {C. R.}",

year = "1998",

month = jul,

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doi = "10.1016/S1386-9477(98)00027-7",

language = "English",

volume = "2",

pages = "121--125",

journal = "Physica E: Low-Dimensional Systems and Nanostructures",

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publisher = "Elsevier B.V.",

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Langerak, CJGM, Murdin, BN, Ciesla, CM, Oswald, J, Homer, A, Springholz, G, Bauer, G, Stradling, RA, Kamal-Saadi, M, Gornik, E & Pidgeon, CR 1998, 'Landau-level lifetimes in PbTe nipi superlattices, PbTe/PbEuTe and InAs/AlSb quantum wells', Physica E: Low-Dimensional Systems and Nanostructures, vol. 2, no. 1-4, pp. 121-125. https://doi.org/10.1016/S1386-9477(98)00027-7

TY - JOUR

T1 - Landau-level lifetimes in PbTe nipi superlattices, PbTe/PbEuTe and InAs/AlSb quantum wells

AU - Langerak, C. J G M

AU - Murdin, B. N.

AU - Ciesla, C. M.

AU - Oswald, J.

AU - Homer, A.

AU - Springholz, G.

AU - Bauer, G.

AU - Stradling, R. A.

AU - Kamal-Saadi, M.

AU - Gornik, E.

AU - Pidgeon, C. R.

PY - 1998/7/15

Y1 - 1998/7/15

N2 - Landau-level lifetimes are determined from saturation cyclotron resonance (CR) in wide parabolic wells, quantum wells and bulk PbTe-Pb1 - xEuxTe systems. These narrow gap structures exhibit strong band non-parabolicity necessary to terminate the normally equi-spaced Landau-level ladder. It was not possible to saturate the bulk sample, but short lifetimes, of between 1.5 and 8 ps, were obtained for the wide parabolic well and the quantum well, respectively, utilising a multi-level rate equation model. We also report the first pump-probe cyclotron resonance result in an InAs-AlSb quantum structure. The pump-probe experiment provides a direct determination of the lifetime, giving t = 40 ps in this InAs-AlSb sample. This shows good agreement with an 8 × 8k · p calculation. © 1998 Elsevier Science B.V. All rights reserved.

AB - Landau-level lifetimes are determined from saturation cyclotron resonance (CR) in wide parabolic wells, quantum wells and bulk PbTe-Pb1 - xEuxTe systems. These narrow gap structures exhibit strong band non-parabolicity necessary to terminate the normally equi-spaced Landau-level ladder. It was not possible to saturate the bulk sample, but short lifetimes, of between 1.5 and 8 ps, were obtained for the wide parabolic well and the quantum well, respectively, utilising a multi-level rate equation model. We also report the first pump-probe cyclotron resonance result in an InAs-AlSb quantum structure. The pump-probe experiment provides a direct determination of the lifetime, giving t = 40 ps in this InAs-AlSb sample. This shows good agreement with an 8 × 8k · p calculation. © 1998 Elsevier Science B.V. All rights reserved.

KW - Landau-level lifetimes

KW - Saturation spectroscopy

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U2 - 10.1016/S1386-9477(98)00027-7

DO - 10.1016/S1386-9477(98)00027-7

M3 - Article

SN - 1386-9477

VL - 2

SP - 121

EP - 125

JO - Physica E: Low-Dimensional Systems and Nanostructures

JF - Physica E: Low-Dimensional Systems and Nanostructures

IS - 1-4

ER -

Landau-level lifetimes in PbTe nipi superlattices, PbTe/PbEuTe and InAs/AlSb quantum wells

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Keywords

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