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arXiv · 1606.05132

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
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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.

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Adam Kwiatkowski, Marta Gryglas-Borysiewicz, Piotr Juszynski, Jacek Przybytek, Maciej Sawicki, Janusz Sadowski, Dariusz Wasik, Michal Baj. 2016-06-16. Determining Curie temperature of (Ga,Mn)As samples based on electrical transport measurements: low Curie temperature case. https://doi.org/10.1063/1.4953628

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