Excitations of the strongly correlated electron liquid in coupled layers

Neilson, David; Swierkowski, Leszek; Szymański, J.; Liu, L

doi:10.1103/physrevlett.71.4035

Cited by 63 publications

(38 citation statements)

References 38 publications

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“…As to experimental results on bilayer collective spectra, a recent compilation [20] shows that at higher k values they do favor the QLCA prediction (and, consequently, that of the present paper) over the preQctions of other theoretical approaches [21]. In the more crucial lower k domain, the existing low coupling results In summary, we have developed static sum rules for bilayer response functions and we have shown, for the first time, how these sum rules can be incorporated in the analysis of the bilayer dynamical structure function to obtain a representation over the entire temperature domain down to zero temperature.…”

Section: Pair Correlation Functions the Static Structure Functions Tmentioning

confidence: 91%

Collaborative project: research on strongly coupled plasmas. Final technical report for period July 15, 1998--July 14, 2002

Golden¹

2002

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Section: Pair Correlation Functions the Static Structure Functions Tmentioning

confidence: 91%

Collaborative project: research on strongly coupled plasmas. Final technical report for period July 15, 1998--July 14, 2002

Golden¹

2002

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“…For simplicity we have assumed in Eqs. (4)(5)(6)(7)(8)(9) that the densities in both layers are identical. The generalisation to the case of different densities is straightforward.…”

Section: Response Function Of the Systemmentioning

confidence: 99%

Electron Liquids in Coupled Quantum Wells

Swierkowski

Szymański²,

Neilson

1993

Acta Phys. Pol. A

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A system comprising of two adjacent layers of conduction electrons or alternatively a layer of electrons and a layer of holes can exhibit novel instabilities in the liquid phase towards inhomogeneous ground states. The carriers in the two layers can couple to each other through the Coulomb interaction but they are not permitted to tunnel so that the charges in one layer act as a polarisable background for the other layer. The presence of a second layer encourages the formation of novel ground states with inhomogeneous density distributions. We find theoretical evidence for the existence of charge density wave ground states and also a coupled Wigner crystal. These exist at much higher densities than the Wigner crystallisation density for the single layer case. The existence of these inhomogeneous ground states leads to significant modifications of the low lying excitation spectrum in the uniform liquid phase. Near the transitions to both the charge density wave and the coupled Wigner crystal phases we find evidence of the development in the liquid phase of new soft mode excitations of finite wave number q that are precursors of the inhomogeneous ground states. Near the transition to the coupled Wigner crystal we observe a strong tendency of the single particle excitation spectrum for the liquid phase to renormalise into a single line that has a dispersion closely resembling the phonon dispersion curve for the solid.

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“…We briefly explore the conditions under which a spin-density wave (SDW) instability evolves in a double-layer electron system. The static spin susceptibility may be written as [35] …”

Section: Spin Instabilities In Layered Structuresmentioning

confidence: 99%

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

Tanatar

Mutluay

1998

Eur. Phys. J. B

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Abstract. We study the spin correlations in two-and three-dimensional electron liquids within the sum-rule version of the self-consistent field approach of Singwi, Tosi, Land, and Sjölander. Analytic expressions for the spin-antisymmetric static structure factor and the corresponding local-field correction are obtained with density dependent coefficients. We calculate the spin-dependent pair-correlation functions, paramagnon dispersion, and static spin-response function within the present model, and discuss the spin-density wave instabilities in double-layer electron systems.PACS. 71.10.-w Theories and models of many electron systems -71.45.Gm Exchange, correlation, dielectric and magnetic functions, plasmons -73.20.Dx Electron states in low-dimensional structures (superlattices, quantum well structures and mutlilayers)

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Excitations of the strongly correlated electron liquid in coupled layers

Cited by 63 publications

References 38 publications

Collaborative project: research on strongly coupled plasmas. Final technical report for period July 15, 1998--July 14, 2002

Collaborative project: research on strongly coupled plasmas. Final technical report for period July 15, 1998--July 14, 2002

Electron Liquids in Coupled Quantum Wells

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

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