title: Bulk electronic structure of superconducting LaRu2P2 single crystals measured by soft-X-ray angle-resolved photoemission spectroscopy.
abstract: We present a soft x-ray angle-resolved photoemission spectroscopy (SX-ARPES) study of the stoichiometric pnictide superconductor LaRu(2)P(2). The observed electronic structure is in good agreement with density functional theory (DFT) calculations. However, it is significantly different from its counterpart in high-temperature superconducting Fe pnictides. In particular, the bandwidth renormalization present in the Fe pnictides (~2-3) is negligible in LaRu(2)P(2) even though the mass enhancement is similar in both systems. Our results suggest that the superconductivity in LaRu(2) P(2) has a different origin with respect to the iron pnictides. Finally, we demonstrate that the increased probing depth of SX-ARPES, compared to the widely used ultraviolet ARPES, is essential in determining the bulk electronic structure in the experiment.
authors.affiliation: Swiss Light Source, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland.
authors.forename: E
authors.initials: E
authors.lastname: Razzoli
authors.forename: M
authors.initials: M
authors.lastname: Kobayashi
authors.forename: V N
authors.initials: VN
authors.lastname: Strocov
authors.forename: B
authors.initials: B
authors.lastname: Delley
authors.forename: Z
authors.initials: Z
authors.lastname: Bukowski
authors.forename: J
authors.initials: J
authors.lastname: Karpinski
authors.forename: N C
authors.initials: NC
authors.lastname: Plumb
authors.forename: M
authors.initials: M
authors.lastname: Radovic
authors.forename: J
authors.initials: J
authors.lastname: Chang
authors.forename: T
authors.initials: T
authors.lastname: Schmitt
authors.forename: L
authors.initials: L
authors.lastname: Patthey
authors.forename: J
authors.initials: J
authors.lastname: Mesot
authors.forename: M
authors.initials: M
authors.lastname: Shi