Study on spin-splitting phenomena in the band structure of GdN


An exceptional kind of spin splitting in the band structure of AlN/GdN/AlN double heterostructures has been studied by employing temperature-dependent spectroscopy. This spin splitting can be attributed to both the band-gap shrink and the difference between minority and majority band energies in GdN below the Curie point; these results have been established by evaluating the optical band gaps at the X-point. The temperature-dependent magnetization measurements that provide direct evidence of the magnetic ordering below 32 K and it is described by long-range spin correlation in GdN. (C) 2012 American Institute of Physics. []



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Vidyasagar, R; Kitayama, S; Yoshitomi, H; Kita, T; Sakurai, T; Ohta, H

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We express our appreciation for the partial support from a Grant-in-Aid for Creative Scientific Research (Grant No. 19GS1209) from the Japan Society for the Promotion of Science.

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