arXiv subjects

B. T. Phan

Publications and source records attributed to B. T. Phan.

2 recordsLinked to original sources

arXiv2011

Metallic characteristics in superlattices composed of insulators, NdMnO3/SrMnO3/LaMnO3

We report on the electronic properties of superlattices composed of three different antiferromagnetic insulators, NdMnO3/SrMnO3/LaMnO3 grown on SrTiO3 substrates. Photoemission spectra obtained by tuning the x-ray energy at the Mn 2p -> 3d edge show a Fermi cut-off, indicating metallic behavior mainly originating from Mn e_g electrons. Furthermore, the density of states near the Fermi energy and the magnetization obey a similar temperature dependence, suggesting a correlation between the spin and charge degrees of freedom at the interfaces of these oxides.

cond-mat.str-el↗

arXiv2010

Relaxor characteristics at the interfaces of [NdMnO3/SrMnO3/LaMnO3] superlattices

We have investigated the magnetic properties of transition metal oxide superlattices with broken inversion symmetry composed of three different antiferromagnetic insulators, [NdMnO3/SrMnO3/LaMnO3]. In the superlattices studied here, we identify the emergence of a relaxor, glassy-like behavior below spin glass temperature, T=36K. Our results offer the possibility to study and utilize magnetically metastable devices confined in nano-scale interfaces.

cond-mat.str-el↗