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

Kwiatkowski, Adam; Gryglas-Borysiewicz, Marta; Juszynski, Piotr; Przybytek, Jacek; Sawicki, Maciej; Sadowski, Janusz LU ; Wasik, Dariusz and Baj, Michal (2016) In Applied Physics Letters 108(24). p.1-4
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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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
dilute ferromagnetic semiconductors, molecular beam epitaxy
in
Applied Physics Letters
volume
108
issue
24
pages
4 pages
publisher
American Institute of Physics
external identifiers
  • Scopus:84975031783
ISSN
0003-6951
DOI
10.1063/1.4953628
language
English
LU publication?
yes
id
b7e69fed-2276-43dc-9ed9-a00b56844996
date added to LUP
2016-06-18 16:22:38
date last changed
2016-10-13 05:10:21
@misc{b7e69fed-2276-43dc-9ed9-a00b56844996,
  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.},
  author       = {Kwiatkowski, Adam and Gryglas-Borysiewicz, Marta and Juszynski, Piotr and Przybytek, Jacek and Sawicki, Maciej and Sadowski, Janusz and Wasik, Dariusz and Baj, Michal},
  issn         = {0003-6951},
  keyword      = {dilute ferromagnetic semiconductors, molecular beam epitaxy},
  language     = {eng},
  month        = {06},
  number       = {24},
  pages        = {1--4},
  publisher    = {ARRAY(0xb193280)},
  series       = {Applied Physics Letters},
  title        = {Determining Curie temperature of (Ga,Mn)As samples based on electrical transport measurements: Low Curie temperature case.},
  url          = {http://dx.doi.org/10.1063/1.4953628},
  volume       = {108},
  year         = {2016},
}