Orthogonality catastrophe in a composite fermion liquid
Darren J T Leonard; T Portengen; V Nikos Nicopoulos; Neil F Johnson; Darren J T Leonard; Department of Physics, Clarendon Laboratory, Oxford University, Oxford OX1 3PU, UK; T Portengen; Department of Physics, Clarendon Laboratory, Oxford University, Oxford OX1 3PU, UK; V Nikos Nicopoulos; Department of Physics, Clarendon Laboratory, Oxford University, Oxford OX1 3PU, UK; Neil F Johnson; Department of Physics, Clarendon Laboratory, Oxford University, Oxford OX1 3PU, UK
Журнал:
Journal of Physics: Condensed Matter
Дата:
1998-07-13
Аннотация:
We discuss the emergence of an orthogonality catastrophe in the response of a composite fermion liquid as the filling factor approaches , where m = 1, 2, 3... . A tunnelling experiment is proposed in which dramatic changes in the I - V characteristic should be observable as is varied. Explicit I - V characteristics calculated within the so-called modified random phase approximation, are provided for .
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