%0 Journal Article %T Coherent and incoherent bands in La and Rh doped Sr$_3$ Ir$_2$ O$_7$ %+ Laboratoire de Physique des Solides (LPS) %+ Synchrotron SOLEIL (SSOLEIL) %+ Service de physique de l'état condensé (SPEC - UMR3680) %A Brouet, V. %A Serrier-Garcia, L. %A Louat, A. %A Fruchter, L. %A Bertran, F. %A Le Fèvre, P. %A Rault, J. %A Forget, A. %A Colson, Dorothée %< avec comité de lecture %@ 1098-0121 %J Physical Review B: Condensed Matter and Materials Physics (1998-2015) %I American Physical Society %V 98 %P 235101 %8 2018-12 %D 2018 %R 10.1103/PhysRevB.98.235101 %Z Physics [physics]/Condensed Matter [cond-mat]/Strongly Correlated Electrons [cond-mat.str-el]Journal articles %X In Sr$_2$ IrO$_4$ and Sr$_3$ Ir$_2$ O$_7$ , correlations, magnetism, and spin-orbit coupling compete on similar energy scales, creating a new context to study metal-insulator transitions (MIT). We use here angle-resolved photoemission to investigate the MIT as a function of hole and electron doping in Sr$_3$ Ir$_2$ O$_7$ , obtained respectively by Ir/Rh and Sr/La substitutions. We show that there is a clear reduction as a function of doping of the gap between a lower and upper band on both sides of the Fermi level, from 0.2 to 0.05 eV. Although these two bands have a counterpart in band structure calculations, they are characterized by a very different degree of coherence. The upper band exhibits clear quasiparticle peaks, while the lower band is very broad and loses weight as a function of doping. Moreover, their ARPES spectral weights obey different periodicities, reinforcing the idea of their different nature. We argue that a very similar situation occurs in Sr$_2$ IrO$_4$ and conclude that the physics of the two families is essentially the same. %G English %2 https://cea.hal.science/cea-02086414/document %2 https://cea.hal.science/cea-02086414/file/Brouet%20et%20al.%20-%202018%20-%20Coherent%20and%20incoherent%20bands%20in%20La%20and%20Rh%20doped%20S.pdf %L cea-02086414 %U https://cea.hal.science/cea-02086414 %~ CEA %~ CNRS %~ UNIV-PSUD %~ IRAMIS-SPEC %~ CEA-UPSAY %~ UNIV-PARIS-SACLAY %~ UNIV-PSUD-SACLAY %~ CEA-UPSAY-SACLAY %~ SYNCHROTRON-SOLEIL %~ TEST-HALCNRS %~ ANR %~ GS-ENGINEERING %~ IRAMIS %~ GS-CHIMIE %~ GS-PHYSIQUE %~ INSTITUT-SCIENCES-LUMIERE %~ LPSO