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Changes in the Magnetization of a Double Quantum Dot | T.H. Oosterkamp
; S.F. Godijn
; M.J. Uilenreef
; Y.V. Nazarov
; N.C. van der Vaart
; L.P. Kouwenhoven
; | Date: |
11 Feb 1998 | Subject: | Mesoscopic Systems and Quantum Hall Effect | cond-mat.mes-hall | Abstract: | From accurate measurements of the energy states in a double quantum dot we deduce the change in magnetization due to single electron tunneling. As a function of magnetic field we observe crossings and anti-crossings in the energy spectrum. The change in magnetization exhibits wiggles as a function of magnetic field with maximum values of a few effective Bohr magnetons in GaAs. These wiggles are a measure of the chaotic motion of the discrete energy states versus magnetic field. Our results show good agreement with a numeric calculation but deviate significantly from semiclassical estimates. | Source: | arXiv, cond-mat/9802118 | Services: | Forum | Review | PDF | Favorites |
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