Absorption-edge structure in platinum antimonide

Ferromagnetism, superconductivity and secondary phases in the dilute magnetic semiconductor Pt1−xRExSb2 (RE = La, Ce, Gd, Yb)

“…Tight binding band structure calculations predict that PtSb 2 is a semiconductor with an indirect energy gap of 0.08 eV [11]. Infrared absorption measurements, corroborated by measurements of the temperature dependence of the resistivity (ρ), found an indirect energy gap of 0.11 eV [7,12]. Transport properties vary considerably among samples because of deviations from ideal stoichiometry.…”

“…The basic properties of PtSb 2 have been established by previous experiments [7][8][9][10][11][12]. Undoped PtSb 2 crystallizes in Fig.…”