Observation of a roton collective mode in a two-dimensional Fermi liquid

Henri Godfrin (), Matthias Meschke, Hans-Jochen Lauter, Ahmad Sultan, Helga M. Böhm, Eckhard Krotscheck and Martin Panholzer
Additional contact information
Henri Godfrin: Institut Néel, CNRS et Université Joseph Fourier, BP 166, 38042 Grenoble Cedex 9, France
Matthias Meschke: Institut Néel, CNRS et Université Joseph Fourier, BP 166, 38042 Grenoble Cedex 9, France
Hans-Jochen Lauter: Institut Laue-Langevin, BP 156, 38042 Grenoble Cedex 9, France
Ahmad Sultan: Institut Néel, CNRS et Université Joseph Fourier, BP 166, 38042 Grenoble Cedex 9, France
Helga M. Böhm: Institute for Theoretical Physics, Johannes Kepler University, A-4040 Linz, Austria
Eckhard Krotscheck: Institute for Theoretical Physics, Johannes Kepler University, A-4040 Linz, Austria
Martin Panholzer: Institute for Theoretical Physics, Johannes Kepler University, A-4040 Linz, Austria

Nature, 2012, vol. 483, issue 7391, 576-579

Abstract: Neutron scattering measurements of a monolayer of liquid 3He reveal an unexpected collective excitation at high wavevectors, which is described well by a dynamic many-body theory of Fermi liquids.

Date: 2012
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DOI: 10.1038/nature10919

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