Sharp Transition to a Spin-Ordered Phase in the 2D Electron System in Silicon MOSFET's

TL;DR

The paper investigates a transition to a spin-ordered phase in a 2D electron system in silicon MOSFETs, but the authors withdrew their initial interpretation due to alternative explanations for their observations.

Contribution

The authors initially reported evidence of a spin-ordered phase transition but later withdrew their interpretation pending further analysis.

Findings

Doubling of Shubnikov-de Haas oscillation period observed

Data interpretation remains inconclusive due to alternative explanations

Authors withdrew initial claims for a definitive phase transition

Abstract

This paper has been withdrawn by the authors. Measurements at many different angles spanning a broad range of electron densities indicate that the observed doubling of the period of Shubnikov-de Haas oscillations, which we had attributed to a transition to a new spin-ordered phase, is also consistent with an alternative explanation. A full interpretation of our data will be posted at a later date.