Spin susceptibility of two-dimensional electrons in narrow AlAs quantum wells

K. Vakili; Y. P. Shkolnikov; E. Tutuc; E. P. De Poortere; M. Shayegan

doi:10.1103/PhysRevLett.92.226401

Spin susceptibility of two-dimensional electrons in narrow AlAs quantum wells

K. Vakili, Y. P. Shkolnikov, E. Tutuc, E. P. De Poortere, M. Shayegan

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Abstract

The spin susceptibility of two-dimensional electron systems (2DES) confined to very narrow AlAs quantum wells (QW) was analyzed. the single-valley occupation, thin electron layer and isotropic in-plane fermi contour properties of the AlAs QWs made them ideal for measuring the role of interaction on the spin susceptibility. An enhancement of the spin susceptibility was observed over the conduction-band value that increased as the carrier density was decreased. No corresponding ferromagnetic instability at the density was observed.

Original language	English (US)
Article number	226401
Pages (from-to)	226401-1-226401-4
Journal	Physical review letters
Volume	92
Issue number	22
DOIs	https://doi.org/10.1103/PhysRevLett.92.226401
State	Published - Jul 4 2004

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1103/PhysRevLett.92.226401

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title = "Spin susceptibility of two-dimensional electrons in narrow AlAs quantum wells",

abstract = "The spin susceptibility of two-dimensional electron systems (2DES) confined to very narrow AlAs quantum wells (QW) was analyzed. the single-valley occupation, thin electron layer and isotropic in-plane fermi contour properties of the AlAs QWs made them ideal for measuring the role of interaction on the spin susceptibility. An enhancement of the spin susceptibility was observed over the conduction-band value that increased as the carrier density was decreased. No corresponding ferromagnetic instability at the density was observed.",

author = "K. Vakili and Shkolnikov, {Y. P.} and E. Tutuc and {De Poortere}, {E. P.} and M. Shayegan",

note = "Funding Information: We thank the NSF for support and R. Winkler for discussions. Part of the work was performed at the Florida NHMFL, also supported by the NSF; we thank E. Palm, T. Murphy, and G. Jones for technical assistance.",

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T1 - Spin susceptibility of two-dimensional electrons in narrow AlAs quantum wells

AU - Vakili, K.

AU - Shkolnikov, Y. P.

AU - Tutuc, E.

AU - De Poortere, E. P.

AU - Shayegan, M.

N1 - Funding Information: We thank the NSF for support and R. Winkler for discussions. Part of the work was performed at the Florida NHMFL, also supported by the NSF; we thank E. Palm, T. Murphy, and G. Jones for technical assistance.

PY - 2004/7/4

Y1 - 2004/7/4

N2 - The spin susceptibility of two-dimensional electron systems (2DES) confined to very narrow AlAs quantum wells (QW) was analyzed. the single-valley occupation, thin electron layer and isotropic in-plane fermi contour properties of the AlAs QWs made them ideal for measuring the role of interaction on the spin susceptibility. An enhancement of the spin susceptibility was observed over the conduction-band value that increased as the carrier density was decreased. No corresponding ferromagnetic instability at the density was observed.

AB - The spin susceptibility of two-dimensional electron systems (2DES) confined to very narrow AlAs quantum wells (QW) was analyzed. the single-valley occupation, thin electron layer and isotropic in-plane fermi contour properties of the AlAs QWs made them ideal for measuring the role of interaction on the spin susceptibility. An enhancement of the spin susceptibility was observed over the conduction-band value that increased as the carrier density was decreased. No corresponding ferromagnetic instability at the density was observed.

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JO - Physical review letters

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Spin susceptibility of two-dimensional electrons in narrow AlAs quantum wells

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