Electronic structure of pyrite-type <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi mathvariant="normal">MnTe</mi></mrow><mrow><mn>2</mn></mrow></msub></mrow></math></span> studied by photoelectron spectroscopy

K. V. Kaznacheyev; T. Muro; T. Matsushita; T. Iwasaki; Y. Kuwata; H. Harada; S. Suga; H. Ishii; T. Miyahara; T. Mizokawa; A. Fujimori; T. Harada; T. Kanomata

doi:10.1103/PhysRevB.58.13491

Electronic structure of pyrite-type ${MnTe}_{2}$ studied by photoelectron spectroscopy

K. V. Kaznacheyev, T. Muro, T. Matsushita, T. Iwasaki, Y. Kuwata, H. Harada, S. Suga, H. Ishii, T. Miyahara, T. Mizokawa, A. Fujimori, T. Harada, and T. Kanomata

Phys. Rev. B 58, 13491 – Published 15 November 1998

Abstract

The electronic structure of pyrite-type ${MnTe}_{2}$ has been investigated by photoemission spectroscopy. The Mn $3 d$ partial density of states was obtained from resonance photoemission experiments in the Mn $3 \vec{p} 3 d$ core excitation region. The experimental results were compared with a linear-muffin-tin-orbital atomic-sphere-approximation ab initiocalculation, and some discrepancy was found. To reveal a role of electron correlation, the results were analyzed in terms of the configuration-interaction model by considering a $({MnTe}_{6})^{10 -}$ cluster, and parameter values for a model Hamiltonian were estimated $(U = 5.5$ eV, $Δ = 1.5$ eV and $T = 1.4$ eV). X-ray photoemission spectra of the Mn $2 p$ core level were also measured to confirm this assignment.

Received 28 January 1998

DOI:https://doi.org/10.1103/PhysRevB.58.13491

Authors & Affiliations

K. V. Kaznacheyev^*

KSRS, RRC Kurchatov Institute, Moscow 123182, Russia
Photon Factory, High Energy Accelerator Research Organization, Tsukuba 305, Japan

T. Muro

Department of Material Physics, Osaka University, Toyonaka, Osaka 560, Japan

T. Matsushita

Department of Material Physics, Osaka University, Toyonaka, Osaka 560, Japan
Photon Factory, High Energy Accelerator Research Organization, Tsukuba 305, Japan

T. Iwasaki, Y. Kuwata, H. Harada, and S. Suga

Department of Material Physics, Osaka University, Toyonaka, Osaka 560, Japan

H. Ishii

Department of Physics, Tokyo Metropolitan University, Minami-ohsawa, Tokyo 192, Japan

T. Miyahara

Department of Physics, Tokyo Metropolitan University, Minami-ohsawa, Tokyo 192, Japan
Photon Factory, High Energy Accelerator Research Organization, Tsukuba 305, Japan

T. Mizokawa and A. Fujimori

Department of Physics, University of Tokyo, Bunkyo-ku, Tokyo 113, Japan

T. Harada and T. Kanomata

Department of Applied Physics, Tohoku Gakuin University, Tagajo, Miyagi 985, Japan

^*Electronic address: kaznache@xray1.physics.sunysb.edu

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Vol. 58, Iss. 20 — 15 November 1998

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