Determination of the Sign of g factors for Conduction Electrons Using Time-resolved Kerr Rotation

TL;DR

This paper introduces a time-resolved Kerr rotation method to accurately determine both the sign and magnitude of electron g factors in semiconductors, addressing limitations of traditional magneto-optical techniques.

Contribution

The paper presents a novel time-resolved Kerr rotation technique for precise measurement of electron g factor sign and amplitude in semiconductors.

Findings

Successfully measured the sign of electron g factors

Achieved high precision in g factor amplitude measurement

Overcame previous technical difficulties in g factor determination

Abstract

The knowledge of electron g factor is essential for spin manipulation in the field of spintronics and quantum computing. While there exist technical difficulties in determining the sign of g factor in semiconductors by the established magneto-optical spectroscopic methods. We develop a time resolved Kerr rotation technique to precisely measure the sign and the amplitude of electron g factor in semiconductors.