Zeitschriftenartikel:
A. Perucchi, C. Marini, M. Valentini, P. Postorino, R. Sopracase, P. Dore, P. Hansmann, O. Jepsen, G. Sangiovanni, A. Toschi, K. Held, D. Topwal, D. D. Sarma, S. Lupi:
"Pressure and alloying effects on the metal to insulator transition in NiS2-xSex studied by infrared spectroscopy";
Physical Review B,
80
(2009),
7;
S. 073101-1
- 073101-4.
Kurzfassung englisch:
The metal to insulator transition in the charge-transfer NiS2‑xSex compound has been investigated through infrared reflectivity. Measurements performed by applying pressure to pure NiS2 (lattice contraction) and by Se alloying (lattice expansion) reveal that in both cases an anomalous metallic state is obtained. We find that optical results are not compatible with the linear Se-alloying vs pressure-scaling relation previously established through transport, thus pointing out the substantially different microscopic origin of the two transitions.
"Offizielle" elektronische Version der Publikation (entsprechend ihrem Digital Object Identifier - DOI)
http://dx.doi.org/10.1103/PhysRevB.80.073101
Elektronische Version der Publikation:
http://adsabs.harvard.edu/abs/2009PhRvB..80g3101P
Erstellt aus der Publikationsdatenbank der Technischen Universität Wien.