info:eu-repo/semantics/article
Electronic subband reconfiguration in a d0-perovskite induced by strain-driven structural transformations
Fecha
2012-11Registro en:
Laukhin, V.; Copie, O.; Rozenberg, Marcelo Javier; Weht, Ruben Oscar; Bouzehouane, K.; et al.; Electronic subband reconfiguration in a d0-perovskite induced by strain-driven structural transformations; American Physical Society; Physical Review Letters; 109; 22; 11-2012; 226601-226604
0031-9007
CONICET Digital
CONICET
Autor
Laukhin, V.
Copie, O.
Rozenberg, Marcelo Javier
Weht, Ruben Oscar
Bouzehouane, K.
Reyren, N.
Jacquet, E.
Bibes, M.
Barthélémy, A.
Herranz, G.
Resumen
It is well known that transport in lightly n-doped SrTiO3 involves light and heavy electron bands. We have found that upon application of moderate quasi-isotropic pressures, the relative positions of these subbands are changed by a few meV and, eventually, a band inversion occurs at ∼1kbar. Such effects are, however, suppressed in the closely related KTaO3 perovskite. We show that the extremely subtle electronic reconfiguration in SrTiO3 is triggered by strain-induced structural transformations that are accompanied by remarkable mobility enhancements up to about Δμ/μ 300%. Our results provide a microscopic rationale for the recently discovered transport enhancement under strain and underscore the role of the internal structural degrees of freedom in the modulation of the perovskite electronic properties. © 2012 American Physical Society.