Magnetic Field Dependence of the Level Spacing of a Small Electron Droplet

Details Magnetic Field Dependence of the Level Spacing of a Small Electron Droplet Magnetic Field Dependence of the Level Spacing of a Small Electron Droplet

1995-11-28

arxiv.org/abs/cond-mat/9511133v1

Physics

Condensed Matter

11 pages of text in RevTeX, 4 figures in Postscript (files in the form of uuencoded compressed tar file)

Scientific paper

10.1103/PhysRevB.53.R4221

The temperature dependence of conductance resonances is used to measure the evolution with the magnetic field of the average level spacing $\Delta\epsilon$ of a droplet containing $\sim 30$ electrons created by lateral confinement of a two-dimensional electron gas in GaAs. $\Delta\epsilon$ becomes very small ($< 30\mu$eV) near two critical magnetic fields at which the symmetry of the droplet changes and these decreases of $\Delta\epsilon$ are predicted by Hartree-Fock (HF) for charge excitations. Between the two critical fields, however, the largest measured $\Delta\epsilon= 100\mu$eV is an order of magnitude smaller than predicted by HF but comparable to the Zeeman splitting at this field, which suggests that the spin degrees of freedom are important. PACS: 73.20.Dx, 73.20.Mf

Affiliated with

Also associated with

No associations

Rating

Magnetic Field Dependence of the Level Spacing of a Small Electron Droplet does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Magnetic Field Dependence of the Level Spacing of a Small Electron Droplet, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic Field Dependence of the Level Spacing of a Small Electron Droplet will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-628183