| EPSRC Reference: |
GR/K15619/01 |
| Title: |
THEORY OF CORRELATION EFFECTS IN COUPLED, LAYERED ELECTRON AND HOLE SYSTEMS IN A MAGNETIC FIELD |
| Principal Investigator: |
Johnson, Professor N |
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| Department: |
Oxford Physics |
| Organisation: |
University of Oxford |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 November 1994 |
Ends: |
31 July 1998 |
Value (£): |
107,994
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Summary on Grant Application Form |
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This project investigates correlation effects in coupled, layered electron-hole systems in a magnetic field, with the objective of interpreting experimental data on two physical realisations of such systems being studied in Oxford and internationally: 1) photoluminescence in semiconductor heterostructures containing a two-dimensional electron gas at high magnetic field and a (spatially-separate) photo-excited hole gas. 2) cyclotron and magneto-oscillation measurements in charge transfer salts containing layers of quasi-one-dimensional electrons and quasi-two-dimensional holes. Before attempting to interpret experimental data, we will need to investigate the generic properties of coupled, layered electron-hole systems in their own right. In particular we will investigate the interplay of cyclotron (kinetic) energy an band structure effects in the presence of three types of many-body interaction: electron-electron, electron-hole and even hole-hole. We will employ two complementary approaches: (a) cluster-model calculations for electrons and holes. In particular, solutions will be sought of model Hamiltonians derived directly from the Schrodinger equation fro N interacting electrons and holes in restricted geometries (b) develop approximate solutions of various phenomenological many-body Hamiltonians based, among others, on Hubbard-type models, and effective Langrangians involving order parameters.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
| Summary |
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| Date Materialised |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.ox.ac.uk |