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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on EuSnP by Materials Project

EuSnP crystallizes in the tetragonal P4/nmm space group. The structure is three-dimensional. Eu is bonded to one Sn and five equivalent P atoms to form distorted EuSnP5 octahedra that share a cornercorner with one PEu5Sn octahedra, corners with four equivalent EuSnP5 octahedra, and edges with eight equivalent EuSnP5 octahedra. The corner-sharing octahedra tilt angles range from 0–2°. The Eu–Sn bond length is 3.33 Å. There are one shorter (2.90 Å) and four longer (3.02 Å) Eu–P bond lengths. Sn is bonded in a 2-coordinate geometry to one Eu and one P atom. The Sn–P bond length is 2.50 Å. P is bonded to five equivalent Eu and one Sn atom to form PEu5Sn octahedra that share a cornercorner with one EuSnP5 octahedra, corners with four equivalent PEu5Sn octahedra, and edges with eight equivalent PEu5Sn octahedra. The corner-sharing octahedra tilt angles range from 0–2°.

36 MATERIALS SCIENCE↗
DOE OSTI2024

Complex fermiology and electronic structure of antiferromagnet EuSnP

Throughout this work, we studied the electronic structure of a layered antiferromagnetic metal, EuSnP, in the paramagnetic and in the antiferromagnetic phase using angle-resolved photoemission spectroscopy (ARPES) alongside density-functional theory (DFT)-based first-principles calculations. The temperature dependence of the magnetic susceptibility measurements exhibits an antiferromagnetic transition at a Néel temperature of 21 K. Employing high-resolution ARPES, the valence-band structure was measured at several temperatures above and below the Néel temperature, which produced identical spectra independent of temperature. Through analysis of the ARPES results presented here, we attribute the temperature-independent spectra to the weak coupling of the Sn and P conduction electrons with Eu 4⁢ƒ states.

75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND↗