Now showing items 1-4 of 4

    • Carrier-density control of the SrTiO3 (001) surface 2DEG studied by ARPES 

      McKeown Walker, Siobhan Ellen; Bruno, Flavio Y; Wang, Zhiming; de la Torre, Alberto; Riccó, Sara; Tamai, Anna; Kim, Timur; Hoesch, Moritz; Shi, Ming; Bahramy, Mohammed Saeed; King, Phil; Baumberger, Felix (2015) - Journal article
      The origin of the 2D electron gas (2DEG)stabilized at the bare surface of SrTiO3 (001) is investigated. Using high-resolution angle-resolved photoemission and core-level spectroscopy, it is shown conclusively that this ...
    • Coherent quasiparticles with a small fermi surface in lightly doped Sr3Ir2O7 

      De La Torre, Alberto; Hunter, E. C.; Subedi, A.; McKeown Walker, Siobhan Ellen; Tamai, Anna; Kim, T. K.; Hoesch, M.; Perry, Robin Stuart; Georges, A.; Baumberger, F. (2014-12-16) - Journal article
      We characterize the electron doping evolution of (Sr1-xLax)3Ir2O7 by means of angle-resolved photoemission. Concomitant with the metal insulator transition around x ≈ 0.05 we find the emergence of coherent quasiparticle ...
    • Formation of heavy d-electron quasiparticles in Sr3Ru2O7 

      Allan, Milan Peter; Tamai, Anna; Rozbicki, Emil Jerzy; Fischer, M. H.; Voss, J.; King, Phil; Meevasana, Worawat; Thirupathaiah, S.; Rienks, E.; Fink, J.; Tennant, David Alan; Perry, Robin Stuart; Mercure, Jean-Francois; Wang, M. A.; Lee, Jinho; Fennie, C. J.; Kim, E-A; Lawler, M. J.; Shen, K. M.; Mackenzie, Andrew; Shen, Z-X; Baumberger, Felix (2013-06-20) - Journal article
      The phase diagram of Sr3Ru2O7 shows hallmarks of strong electron correlations despite the modest Coulomb interaction in the Ru 4d shell. We use angle-resolved photoelectron spectroscopy measurements to provide microscopic ...
    • Spectroscopic indications of polaronic behavior of the strong spin-orbit insulator Sr3Ir2O7 

      King, Phil; Takayama, T.; Tamai, Anna; Rozbicki, Emil Jerzy; McKeown Walker, Siobhan Ellen; Shi, M.; Patthey, L.; Moore, R.G.; Lu, D.; Shen, K. M.; Takagi, H.; Baumberger, Felix (2013-06-24) - Journal article
      We investigate the bilayer Ruddlesden-Popper iridate Sr3Ir2O7 by temperature-dependent angle-resolved photoemission. At low temperatures, we find a fully gapped correlated insulator, characterized by a small charge gap and ...