Longitudinal photocurrent spectroscopy of a single GaAs/AlGaAs v-groove quantum wire.
Modulation-doped GaAs v-groove quantum wires (QWRs) have been fabricated with novel electrical contacts made to two-dimensional electron-gas (2DEG) reservoirs. Here, we present longitudinal photocurrent (photoconductivity/PC) spectroscopy measurements of a single QWR. We clearly observe conductance...
| প্রধান লেখক: | , , , , , , , |
|---|---|
| বিন্যাস: | Journal article |
| ভাষা: | English |
| প্রকাশিত: |
2005
|
| _version_ | 1826284964352622592 |
|---|---|
| author | Cade, N Hadjipanayi, M Roshan, R Maciel, A Ryan, J Macherey, F Schäpers, T Lüth, H |
| author_facet | Cade, N Hadjipanayi, M Roshan, R Maciel, A Ryan, J Macherey, F Schäpers, T Lüth, H |
| author_sort | Cade, N |
| collection | OXFORD |
| description | Modulation-doped GaAs v-groove quantum wires (QWRs) have been fabricated with novel electrical contacts made to two-dimensional electron-gas (2DEG) reservoirs. Here, we present longitudinal photocurrent (photoconductivity/PC) spectroscopy measurements of a single QWR. We clearly observe conductance in the ground-state one-dimensional subbands; in addition, a highly temperature-dependent response is seen from other structures within the v-groove. The latter phenomenon is attributed to the effects of structural topography and localization on carrier relaxation. The results of power-dependent PC measurements suggest that the QWR behaves as a series of weakly interacting localized states, at low temperatures. |
| first_indexed | 2024-03-07T01:21:45Z |
| format | Journal article |
| id | oxford-uuid:9098c0db-5ce0-441f-8b03-662d2b773cfd |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T01:21:45Z |
| publishDate | 2005 |
| record_format | dspace |
| spelling | oxford-uuid:9098c0db-5ce0-441f-8b03-662d2b773cfd2022-03-26T23:12:43ZLongitudinal photocurrent spectroscopy of a single GaAs/AlGaAs v-groove quantum wire.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:9098c0db-5ce0-441f-8b03-662d2b773cfdEnglishSymplectic Elements at Oxford2005Cade, NHadjipanayi, MRoshan, RMaciel, ARyan, JMacherey, FSchäpers, TLüth, HModulation-doped GaAs v-groove quantum wires (QWRs) have been fabricated with novel electrical contacts made to two-dimensional electron-gas (2DEG) reservoirs. Here, we present longitudinal photocurrent (photoconductivity/PC) spectroscopy measurements of a single QWR. We clearly observe conductance in the ground-state one-dimensional subbands; in addition, a highly temperature-dependent response is seen from other structures within the v-groove. The latter phenomenon is attributed to the effects of structural topography and localization on carrier relaxation. The results of power-dependent PC measurements suggest that the QWR behaves as a series of weakly interacting localized states, at low temperatures. |
| spellingShingle | Cade, N Hadjipanayi, M Roshan, R Maciel, A Ryan, J Macherey, F Schäpers, T Lüth, H Longitudinal photocurrent spectroscopy of a single GaAs/AlGaAs v-groove quantum wire. |
| title | Longitudinal photocurrent spectroscopy of a single GaAs/AlGaAs v-groove quantum wire. |
| title_full | Longitudinal photocurrent spectroscopy of a single GaAs/AlGaAs v-groove quantum wire. |
| title_fullStr | Longitudinal photocurrent spectroscopy of a single GaAs/AlGaAs v-groove quantum wire. |
| title_full_unstemmed | Longitudinal photocurrent spectroscopy of a single GaAs/AlGaAs v-groove quantum wire. |
| title_short | Longitudinal photocurrent spectroscopy of a single GaAs/AlGaAs v-groove quantum wire. |
| title_sort | longitudinal photocurrent spectroscopy of a single gaas algaas v groove quantum wire |
| work_keys_str_mv | AT caden longitudinalphotocurrentspectroscopyofasinglegaasalgaasvgroovequantumwire AT hadjipanayim longitudinalphotocurrentspectroscopyofasinglegaasalgaasvgroovequantumwire AT roshanr longitudinalphotocurrentspectroscopyofasinglegaasalgaasvgroovequantumwire AT maciela longitudinalphotocurrentspectroscopyofasinglegaasalgaasvgroovequantumwire AT ryanj longitudinalphotocurrentspectroscopyofasinglegaasalgaasvgroovequantumwire AT machereyf longitudinalphotocurrentspectroscopyofasinglegaasalgaasvgroovequantumwire AT schaperst longitudinalphotocurrentspectroscopyofasinglegaasalgaasvgroovequantumwire AT luthh longitudinalphotocurrentspectroscopyofasinglegaasalgaasvgroovequantumwire |