Comment on "Critical behavior of the Pauli spin susceptibility..." by A. A. Shashkin et. al

TL;DR

This paper critiques a previous study on 2D electron magnetization, arguing that their conclusion about spin susceptibility critical behavior is based on flawed data analysis, despite similar experimental results.

Contribution

It provides a reanalysis of existing data, challenging the previous claim of spin instability near the metal-insulator transition.

Findings

Previous data misinterpreted due to flawed analysis

No evidence of spin susceptibility divergence

Supports stability of spin susceptibility near transition

Abstract

The paper by A. A. Shashkin et al. [cond-mat/0409100] reports measurements of the thermodynamic magnetization of two-dimensional electrons in silicon. Although the experimental data is very similar to that reported by us more then two years ago, the authors arrive at an opposite conclusion regarding the spin susceptibility "critical behavior" and spin instability in the vicinity of the metal-insulator transition. We show that this interpretation is based on a flawed analysis of the experimental data.