Measurements of strongly anisotropic g factors for spins in single quantum states

J. R. Petta; D. C. Ralph

Measurements of strongly anisotropic g factors for spins in single quantum states

J. R. Petta, D. C. Ralph

Research output: Contribution to journal › Article › peer-review

Abstract

The first measurements of the angular dependence of the g factors for spin Zeeman splitting for individual quantum states in quantum dots were made. The results verify the predictions that spin-orbit coupling can cause the spin properties of quantum states to depend sensitively on the direction of an applied magnetic field. By comparing the g factors between different quantum states in the same nanoparticle, large variations both in angular dependence as well as magnitude are seen, supporting the picture that the strong anisotropies arise from the intrinsic random variations of quantum-mechanical wave functions.

Original language	English (US)
Article number	156802
Pages (from-to)	156802/1-156802/4
Journal	Physical review letters
Volume	89
Issue number	15
State	Published - Oct 7 2002

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

Cite this

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title = "Measurements of strongly anisotropic g factors for spins in single quantum states",

abstract = "The first measurements of the angular dependence of the g factors for spin Zeeman splitting for individual quantum states in quantum dots were made. The results verify the predictions that spin-orbit coupling can cause the spin properties of quantum states to depend sensitively on the direction of an applied magnetic field. By comparing the g factors between different quantum states in the same nanoparticle, large variations both in angular dependence as well as magnitude are seen, supporting the picture that the strong anisotropies arise from the intrinsic random variations of quantum-mechanical wave functions.",

author = "Petta, {J. R.} and Ralph, {D. C.}",

note = "Funding Information: We thank Edgar Bonet, Mandar Deshmukh, and Eric Smith for help with the experimental setup, and Xavier Waintal, Shaffique Adam, and Piet Brouwer for discussions. This work was supported by the NSF, through Grant No. DMR-0071631 and the use of the National Nanofabrication Users Network. Support was also provided by the Packard Foundation, ARO (No. DAAD19-01-1-0541), as well as DoEd GAANN.",

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AU - Ralph, D. C.

N1 - Funding Information: We thank Edgar Bonet, Mandar Deshmukh, and Eric Smith for help with the experimental setup, and Xavier Waintal, Shaffique Adam, and Piet Brouwer for discussions. This work was supported by the NSF, through Grant No. DMR-0071631 and the use of the National Nanofabrication Users Network. Support was also provided by the Packard Foundation, ARO (No. DAAD19-01-1-0541), as well as DoEd GAANN.

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N2 - The first measurements of the angular dependence of the g factors for spin Zeeman splitting for individual quantum states in quantum dots were made. The results verify the predictions that spin-orbit coupling can cause the spin properties of quantum states to depend sensitively on the direction of an applied magnetic field. By comparing the g factors between different quantum states in the same nanoparticle, large variations both in angular dependence as well as magnitude are seen, supporting the picture that the strong anisotropies arise from the intrinsic random variations of quantum-mechanical wave functions.

AB - The first measurements of the angular dependence of the g factors for spin Zeeman splitting for individual quantum states in quantum dots were made. The results verify the predictions that spin-orbit coupling can cause the spin properties of quantum states to depend sensitively on the direction of an applied magnetic field. By comparing the g factors between different quantum states in the same nanoparticle, large variations both in angular dependence as well as magnitude are seen, supporting the picture that the strong anisotropies arise from the intrinsic random variations of quantum-mechanical wave functions.

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Measurements of strongly anisotropic g factors for spins in single quantum states

Abstract

All Science Journal Classification (ASJC) codes

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