Determining Curie temperature of (Ga,Mn)As samples based on electrical transport measurements: low Curie temperature case

Adam Kwiatkowski; Marta Gryglas-Borysiewicz; Piotr Juszynski; Jacek Przybytek; Maciej Sawicki; Janusz Sadowski; Dariusz Wasik; Michal Baj

doi:10.1063/1.4953628

Determining Curie temperature of (Ga,Mn)As samples based on electrical transport measurements: low Curie temperature case

Materials Science 2016-06-17 v1

Authors: Adam Kwiatkowski , Marta Gryglas-Borysiewicz , Piotr Juszynski , Jacek Przybytek , Maciej Sawicki , Janusz Sadowski , Dariusz Wasik , Michal Baj

View on arXiv ↗ PDF ↗ DOI ↗

Abstract

In this paper we show that the widely accepted method of the determination of Curie temperature (TC) in (Ga,Mn)As samples, based on the position of the peak in the temperature derivative of the resistivity,completely fails in the case of non-metallic and low-TC unannealed samples. In this case we propose an alternative method, also based on electric transport measurements, which exploits temperature dependence of the second derivative of the resistivity upon magnetic field.

Keywords

Curie temperature (Ga,Mn)As electrical transport measurement resistivity diluted magnetic semiconductor

Cite

@article{arxiv.1606.05132,
  title  = {Determining Curie temperature of (Ga,Mn)As samples based on electrical transport measurements: low Curie temperature case},
  author = {Adam Kwiatkowski and Marta Gryglas-Borysiewicz and Piotr Juszynski and Jacek Przybytek and Maciej Sawicki and Janusz Sadowski and Dariusz Wasik and Michal Baj},
  journal= {arXiv preprint arXiv:1606.05132},
  year   = {2016}
}

Comments

5 pages, 3 figures

Determining Curie temperature of (Ga,Mn)As samples based on electrical transport measurements: low Curie temperature case

Abstract

Keywords

Cite

Comments

Related papers