Electron Structure and Optical Properties of the Mn1.8Co1.2Al Alloy and Spin Gapless Semiconductor State

E. I. Shreder, A. A. Makhnev, A. V. Lukoyanov, V. V. Marchenkov

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

This paper studies the optical properties of the Mn1.8Co1.2Al alloy, whose composition is close to that of spin gapless Mn2CoAl semiconductor. Our investigation found the absence of intraband absorption contribution, which is an anomalous behavior of optical properties of the alloy. The presence of intense interband absorption in the IR range of spectrum indicates the existence of low-energy gap in the band spectrum of the alloy, which was found by electron structure calculations of the Mn1.75Co1.25Al alloy.

Original languageEnglish
Pages (from-to)1068-1072
Number of pages5
JournalPhysics of Metals and Metallography
Volume119
Issue number11
DOIs
Publication statusPublished - 1 Nov 2018
Externally publishedYes

Keywords

  • electron structure
  • Heusler alloys
  • optical properties

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