We discuss the evolution of Infrared reflectivity at room temperature under various pressures (P) and Se alloying concentration in the strongly correlated NiS 2-xSe x pyrite. Measurements gave a complete picture of the optical response of the system on approaching the P-induced and Se-induced metallic state. A peculiar non-monotonic (V-shaped) volume dependence was found for the quasiparticle spectral weight of both pure and Se-doped compounds.
Volume dependent quasiparticle spectral weight in NiS 2-xSe x system / Marini, Carlo; A., Perucchi; Dore, Paolo; D., Topwal; D. d., Sarma; Lupi, Stefano; Postorino, Paolo. - In: JOURNAL OF PHYSICS. CONFERENCE SERIES. - ISSN 1742-6596. - STAMPA. - 359:1(2012), pp. 012012-012016. (Intervento presentato al convegno 6th Workshop on Infrared Spectroscopy and Microscopy with Accelerator-Based Sources, WIRMS11 tenutosi a Trieste nel 4 September 2011 through 8 September 2011) [10.1088/1742-6596/359/1/012012].
Volume dependent quasiparticle spectral weight in NiS 2-xSe x system
MARINI, CARLO;DORE, Paolo;LUPI, Stefano;POSTORINO, Paolo
2012
Abstract
We discuss the evolution of Infrared reflectivity at room temperature under various pressures (P) and Se alloying concentration in the strongly correlated NiS 2-xSe x pyrite. Measurements gave a complete picture of the optical response of the system on approaching the P-induced and Se-induced metallic state. A peculiar non-monotonic (V-shaped) volume dependence was found for the quasiparticle spectral weight of both pure and Se-doped compounds.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
