2DEGs
Two Dimensional electron gas at the surface of SrTiO3
Two Dimensional electron gas at the surface of SrTiO3
We report the discovery of a 2DEG at the surface of the band-gap insulator SrTiO3. We argue that this metallic state is due to oxygen vacancies created at the surface of this insulator. The vacancies have the double role of providing and confining the electrons
Articles
- Two-dimensional electron gas with universal subbands at the surface of SrTiO3. A.F. Santander-Syro, O. Copie, T. Kondo, F. Fortuna1, S. Pailhes, R. Weht, X. G. Qiu, F. Bertran, A. Nicolaou, A. Taleb-Ibrahimi, P. Le Fevre, G. Herranz, M. Bibes, N. Reyren, Y. Apertet, P. Lecoeur, A. Barthelemy and M. J. Rozenberg; Nature (London) 469:189 (2011)
- Orbital symmetry reconstruction and strong mass renormalization in the two-dimensional electron gas at the surface of KTaO3. A. F. Santander-Syro, C. Bareille, F. Fortuna, O. Copie, M. Gabay, F. Bertran, A. Taleb-Ibrahimi, P. Le Fèvre, G. Herranz, N. Reyren, M. Bibes, A. Barthélémy, P. Lecoeur, J. Guevara,and M. J. Rozenberg; Phys. Rev. B (Rapid Comm) 86, 121107 (2012).
- Hubbard band versus oxygen vacancy states in the correlated electron metal SrVO3. S. Backes, T. C. Rodel, F. Fortuna, E. Frantzeskakis, P. Le Fevre, F. Bertran, M. Kobayashi, R. Yukawa, T. Mitsuhashi, M. Kitamura, K. Horiba, H. Kumigashira, R. Saint-Martin, A. Fouchet, B. Berini, Y. Dumont, A. J. Kim, F. Lechermann, H. O. Jeschke, M. J. Rozenberg, R. Valenti and A. F. Santander-Syro; Phys. Rev. B (Rapid Comm) 94, 241110R (2016)