Local conductance spectra of itinerant ferromagnetic SrRuO3 through break junction

We have measured the local differential conductance spectra (dI/dV-V) of an itinerant ferromagnet composed of polycrystalline SrRuO3 using the mechanically controllable break junction technique. Below the material s Curie temperature (TC = 160 K), characteristic peak or dip conductance spectra are o...

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Bibliographic Details
Published inJapanese Journal of Applied Physics Vol. 55; no. 9
Main Authors Kambara, Hiroshi, Obinata, Y ki, Tenya, Kenichi, Tsujii, Hiroyuki
Format Journal Article
LanguageEnglish
Published The Japan Society of Applied Physics 18.08.2016
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Summary:We have measured the local differential conductance spectra (dI/dV-V) of an itinerant ferromagnet composed of polycrystalline SrRuO3 using the mechanically controllable break junction technique. Below the material s Curie temperature (TC = 160 K), characteristic peak or dip conductance spectra are observed. The characteristic energy scale is comparable to the exchange spin splitting energy that is based on ferromagnetic band calculations. Both the peak and dip spectral shapes are explained based on the itinerant ferromagnetic characteristics of SrRuO3 in terms of spin-dependent transmission, which is similar to the giant magnetoresistance mechanism.
ISSN:0021-4922
1347-4065
DOI:10.7567/JJAP.55.093004