Spin correlations in electron liquids: Analytical results for the local-field correction in two and three dimensions

Tanatar, B.; Mutluay, N.

doi:10.1007/s100510050204

Cited by 5 publications

(1 citation statement)

References 43 publications

(97 reference statements)

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“…For a paramagnetic layer, i.e. P = 0, various static approximations have been presented [16][17][18][19][20] . Commonly, the effective spin dependent interactions are expressed via so-called ,,local field corrections",…”

Section: A Spin Dependent Effective Interactionsmentioning

confidence: 99%

Excitations in a spin-polarized two-dimensional electron gas

et al. 2015

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A remarkably long-lived spin plasmon may exist in two-dimensional electron liquids with imbalanced spin up and spin down population. Predictions for this interesting mode by Agarwal et al. [Phys. Rev. B 90, 155409 (2014)] are based on the random phase approximation. We here show how to account for spin dependent correlations from known ground state pair correlation functions and study the consequences on the various spin dependent longitudinal response functions. The spin plasmon dispersion relation and its critical wave vector for Landau damping by minority spins turn out to be significantly lower. We further demonstrate that spin dependent effective interactions imply a rich structure in the excitation spectrum of the partially spin-polarized system. Most notably, we find a "magnetic antiresonance", where the imaginary part of both, the spin-spin as well as the density-spin response function vanish. The resulting minimum in the double-differential cross section is awaiting experimental confirmation.

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Section: A Spin Dependent Effective Interactionsmentioning

confidence: 99%

Excitations in a spin-polarized two-dimensional electron gas

et al. 2015

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Local field corrections and effective electron–electron interaction in a two-dimensional polarized electron gas

Araghi

Abolhassani

Molayem

2008

Physica B: Condensed Matter

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Spin polarization in a two-dimensional electron gas

Davoudi

Tosi

2002

Physica B: Condensed Matter

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We evaluate the charge and longitudinal spin response functions of a two-dimensional electron gas with $e^2/r$ interactions in an arbitrary state of spin polarization, using a structurally self-consistent approach to treat exchange and correlations. From the results we assess the nature of the magnetic order in the electronic ground state in zero magnetic field as a function of electron density. We find that states of partial spin polarization are thermodynamically unstable at all values of the coupling strength and that a first-order phase transition occurs with increasing coupling strength from the magnetically disorderd (paramagnetic) phase to the fully spin-polarized (ferromagnetic) phase. This behavior is in qualitative agreement with diffusion Monte Carlo data, although the location of the phase transition is underestimated in our calculations.Comment: 12 pages, 10 figuer

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Spin correlations in electron liquids: Analytical results for the local-field correction in two and three dimensions

Cited by 5 publications

References 43 publications

Excitations in a spin-polarized two-dimensional electron gas

Excitations in a spin-polarized two-dimensional electron gas

Local field corrections and effective electron–electron interaction in a two-dimensional polarized electron gas

Spin polarization in a two-dimensional electron gas

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