Measuring the One-Particle Excitations of Ultracold Fermionic Atoms by Stimulated Raman Spectroscopy

Journal Article · Fri Jun 15 00:00:00 EDT 2007 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.98.240402· OSTI ID:20953274

Dao, T -L; Georges, Antoine ^[1]; Dalibard, Jean; Salomon, Christophe ^[2]; Carusotto, Iacopo ^[3]

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1. Centre de Physique Theorique, CNRS, Ecole Polytechnique, Route de Saclay, 91128 Palaiseau Cedex (France)
2. Laboratoire Kastler-Brossel, CNRS, Ecole Normale Superieure, 24, rue Lhomond, 75231 Paris Cedex 05 (France)
3. CNR-INFM BEC Center and Universita di Trento, 38050 Povo (Italy)

We propose a Raman spectroscopy technique which is able to probe the one-particle Green function, the Fermi surface, and the quasiparticles of a gas of strongly interacting ultracold atoms. We give quantitative examples of experimentally accessible spectra. The efficiency of the method is validated by means of simulated images for the case of a usual Fermi liquid as well as for more exotic states: specific signatures of, e.g., a d-wave pseudogap are clearly visible.

• OSTI ID: 20953274
• Journal Information: Physical Review Letters, Vol. 98, Issue 24; Other Information: DOI: 10.1103/PhysRevLett.98.240402; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ATOMS
D WAVES
EXCITATION
FERMI GAS
FERMI LEVEL
FERMIONS
GREEN FUNCTION
QUASI PARTICLES
RAMAN SPECTROSCOPY