Electron states, magneto-transport and carrier dynamics in modulation-doped V-groove quantum wires
We report electrical transport and photoluminescence measurements of modulation-doped GaAs/AlGaAs V-groove quantum wires. Magneto-resistance measurements clearly indicate that transport occurs through the bottom layer in wide structures, whereas sidewall quantum wells may contribute in the case of n...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Conference item |
| Published: |
1998
|
| _version_ | 1797102501207474176 |
|---|---|
| author | Maciel, A Kim, J Ryan, J Schwarz, A Schapers, T Dieker, C Hardtdegen, H Luth, H |
| author_facet | Maciel, A Kim, J Ryan, J Schwarz, A Schapers, T Dieker, C Hardtdegen, H Luth, H |
| author_sort | Maciel, A |
| collection | OXFORD |
| description | We report electrical transport and photoluminescence measurements of modulation-doped GaAs/AlGaAs V-groove quantum wires. Magneto-resistance measurements clearly indicate that transport occurs through the bottom layer in wide structures, whereas sidewall quantum wells may contribute in the case of narrow structures. Strong anisotropy of the photoluminescence clearly identifies quantum wire recombination. The energy of this state is strongly dependent on the incident laser power, increasing with increasing energy, and pinning at the energy of the sidewall quantum well. The considerably reduced quantum wire electron-hole recombination rate obtained from time-resolved photoluminescence measurements, together with the density-dependence of the energy suggest that electron-hole separation occurs during the relaxation process. (C) 1998 Elsevier Science Ltd. All rights reserved. |
| first_indexed | 2024-03-07T06:06:51Z |
| format | Conference item |
| id | oxford-uuid:ee2544dc-50ef-405b-b516-a8e58894e1bb |
| institution | University of Oxford |
| last_indexed | 2024-03-07T06:06:51Z |
| publishDate | 1998 |
| record_format | dspace |
| spelling | oxford-uuid:ee2544dc-50ef-405b-b516-a8e58894e1bb2022-03-27T11:30:31ZElectron states, magneto-transport and carrier dynamics in modulation-doped V-groove quantum wiresConference itemhttp://purl.org/coar/resource_type/c_5794uuid:ee2544dc-50ef-405b-b516-a8e58894e1bbSymplectic Elements at Oxford1998Maciel, AKim, JRyan, JSchwarz, ASchapers, TDieker, CHardtdegen, HLuth, HWe report electrical transport and photoluminescence measurements of modulation-doped GaAs/AlGaAs V-groove quantum wires. Magneto-resistance measurements clearly indicate that transport occurs through the bottom layer in wide structures, whereas sidewall quantum wells may contribute in the case of narrow structures. Strong anisotropy of the photoluminescence clearly identifies quantum wire recombination. The energy of this state is strongly dependent on the incident laser power, increasing with increasing energy, and pinning at the energy of the sidewall quantum well. The considerably reduced quantum wire electron-hole recombination rate obtained from time-resolved photoluminescence measurements, together with the density-dependence of the energy suggest that electron-hole separation occurs during the relaxation process. (C) 1998 Elsevier Science Ltd. All rights reserved. |
| spellingShingle | Maciel, A Kim, J Ryan, J Schwarz, A Schapers, T Dieker, C Hardtdegen, H Luth, H Electron states, magneto-transport and carrier dynamics in modulation-doped V-groove quantum wires |
| title | Electron states, magneto-transport and carrier dynamics in modulation-doped V-groove quantum wires |
| title_full | Electron states, magneto-transport and carrier dynamics in modulation-doped V-groove quantum wires |
| title_fullStr | Electron states, magneto-transport and carrier dynamics in modulation-doped V-groove quantum wires |
| title_full_unstemmed | Electron states, magneto-transport and carrier dynamics in modulation-doped V-groove quantum wires |
| title_short | Electron states, magneto-transport and carrier dynamics in modulation-doped V-groove quantum wires |
| title_sort | electron states magneto transport and carrier dynamics in modulation doped v groove quantum wires |
| work_keys_str_mv | AT maciela electronstatesmagnetotransportandcarrierdynamicsinmodulationdopedvgroovequantumwires AT kimj electronstatesmagnetotransportandcarrierdynamicsinmodulationdopedvgroovequantumwires AT ryanj electronstatesmagnetotransportandcarrierdynamicsinmodulationdopedvgroovequantumwires AT schwarza electronstatesmagnetotransportandcarrierdynamicsinmodulationdopedvgroovequantumwires AT schaperst electronstatesmagnetotransportandcarrierdynamicsinmodulationdopedvgroovequantumwires AT diekerc electronstatesmagnetotransportandcarrierdynamicsinmodulationdopedvgroovequantumwires AT hardtdegenh electronstatesmagnetotransportandcarrierdynamicsinmodulationdopedvgroovequantumwires AT luthh electronstatesmagnetotransportandcarrierdynamicsinmodulationdopedvgroovequantumwires |