Seminário Geral 05/11/2021: Creating and Tuning Low Dimensional Electronic states of Transition Metal Oxides

Sobre este evento

Transition Metal Oxides (TMOs) exhibit unique and multifunctional physical phenomena (such as high-temperature superconductivity, colossal magnetoresistance, metal-insulator transitions, etc.) directly related to the spin and orbital degrees of freedom and their interplay with the crystal lattice. The iso-structure of TMOs permits the realization of hetero-structures that generate at their surfaces and interfaces novel physical matters that radically differ from those of the constituent bulk materials.
One of the remarkable phenomena, Low Dimension Electronic Gas (LDEG) at STO surface and STO-based hetero-structures, is the prominent example of the novel matter showing potential to be the platform for achieving oxide-based electronics.
Within my talk, I will discuss how to create and manipulate LDEG and review its fundamental properties.

1. N. C. Plumb, M. Salluzzo, E. Razzoli, M. Månsson, M. Falub, J. Krempasky, C. E. Matt, J. Chang, J. Minár, J.
Braun, H. Ebert, B. Delley, K.-J. Zhou, C. Monney, T. Schmitt, M. Shi, J. Mesot1, C. Quitmann, L. Patthey, M.
Radović, Mixed dimensionality of confined conducting electrons in the surface region of SrTiO3, Phys. Rev.
Lett. 113, 086801 (2014).
2. A. F. Santander-Syro, F. Fortuna, C. Bareille, T. C. Rodel, G. Landolt, N. C. Plumb, J. H. Dil, and M. Radovic,
Giant spin splitting of the two-dimensional electron gas at the surface of SrTiO3, Nature Materials, 13, 1085–
1090 (2014).
3. Z. Wang, S. McKeown Walker, A. Tamai, Z. Ristic, F.Y. Bruno, A. de la Torre, S. Ricco, N.C. Plumb, M. Shi,
P. Hlawenka, J. Sanchez-Barriga, A. Varykhalov, T.K. Kim, M. Hoesch, P.D.C. King, W. Meevasana, U. Diebold,
J. Mesot, M. Radovic, and F. Baumberger, Tailoring the nature and strength of electron-phonon interactions
in the SrTiO3(001) two-dimensional electron liquid, Nature Material 15, 835–839 (2016).
4. Eduardo B. Guedes, Stefan Muff, Walber H. Brito, Marco Caputo, Hang Li, Nicholas C. Plumb, J. Hugo Dil,
and Milan Radovic, Universal Structural Influence on the 2D Electron Gas at SrTiO3 Surfaces, Advanced
Science, 2100602 (2021).

Tópico: Seminário Geral 05/11/2021
Hora: 5 nov. 2021 10:00 da manhã São Paulo

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