Tracking spin and charge with spectroscopy in spin-polarised 1D systems

Details Tracking spin and charge with spectroscopy in spin-polarised 1D systems Tracking spin and charge with spectroscopy in spin-polarised 1D systems

2009-10-09

arxiv.org/abs/0910.1827v1

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 4 figures

Scientific paper

We calculate the spectral function of a one-dimensional strongly interacting chain of fermions, where the response can be well understood in terms of spinon and holon excitations. Upon increasing the spin imbalance between the spin species, we observe the single-electron response of the fully polarised system to emanate from the holon peak while the spinon response vanishes. For experimental setups that probe one-dimensional properties, we propose this method as an additional generic tool to aid the identification of spectral structures, e.g. in ARPES measurements. We show that this applies even to trapped systems having cold atomic gas experiments in mind.

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