# Spin polarization and exchange-correlation effects in transport properties of two-dimensional electron systems in silicon

## TL;DR

This paper investigates how exchange and correlation effects influence the transport properties and critical electron density in two-dimensional silicon electron systems under magnetic fields, highlighting the role of spin polarization.

## Contribution

It demonstrates that exchange and correlation effects cause the increase in critical density and affect spin polarization during the Anderson transition in 2D electron systems.

## Key findings

- Exchange and correlation effects increase the critical density for the Anderson transition.
- Partial spin polarization requires higher magnetic fields for full spin polarization.
- Exchange effects influence the magnetic field needed to achieve full spin polarization.

## Abstract

We show that the parallel magnetic field-induced increase in the critical electron density for the Anderson transition in a strongly interacting two-dimensional electron system is caused by the effects of exchange and correlations. If the transition occurs when electron spins are only partially polarized, additional increase in the magnetic field is necessary to achieve the full spin polarization in the insulating state due to the exchange effects.