Electronic transport and optical properties of Mo0.5W0.5Te2 single crystal

V. V. Marchenkov, A. N. Domozhirova, A. A. Makhnev, E. I. Shreder, S. V. Naumov, V. V. Chistyakov, Jung-Chun Huang, M. Eisterer

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

A relatively pure and perfect Weyl semimetal Mo0.5W0.5Te2 single crystal was synthesized, and its electrical resistivity, galvanomagnetic properties at temperatures from 4.2 to 80 K in fields up to 10 T, as well as optical properties at room temperature were studied. It is shown that the temperature dependence of the resistivity has a metallic type. At T = 4.2 K and in a 10 T field, the magnetoresistance reaches 29%, monotonously decreasing with temperature. Analysis of the field and temperature dependences of the magnetoresistance suggests that the Fermi surface of Mo0.5W0.5Te2 can contain both open and closed sheets. Studies of the Hall effect and estimates made on this basis showed that the main charge carriers are electrons with a concentration of ∼ 1020 cm-3 and mobility of ∼ 151 cm2/V.s at T = 4.2 K. With an increase in temperature, the concentration of current carriers increases, and their mobility decreases. Optical studies demonstrate that the Mo0.5W0.5Te2 single crystal has no features typical of metals. Interband absorption of light dominates over the entire studied spectral region. The appearance of a weak contribution from free carriers is noted at energies of less than 0.6 eV.

Original languageEnglish
Pages (from-to)241-245
Number of pages5
JournalLow Temperature Physics
Volume45
Issue number2
DOIs
Publication statusPublished - 2019 Feb 1

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transport properties
optical properties
single crystals
electronics
temperature dependence
electrical resistivity
metalloids
Fermi surfaces
temperature
Hall effect
charge carriers
room temperature
estimates
metals
electrons
energy

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

Marchenkov, V. V., Domozhirova, A. N., Makhnev, A. A., Shreder, E. I., Naumov, S. V., Chistyakov, V. V., ... Eisterer, M. (2019). Electronic transport and optical properties of Mo0.5W0.5Te2 single crystal. Low Temperature Physics, 45(2), 241-245. https://doi.org/10.1063/1.5086421
Marchenkov, V. V. ; Domozhirova, A. N. ; Makhnev, A. A. ; Shreder, E. I. ; Naumov, S. V. ; Chistyakov, V. V. ; Huang, Jung-Chun ; Eisterer, M. / Electronic transport and optical properties of Mo0.5W0.5Te2 single crystal. In: Low Temperature Physics. 2019 ; Vol. 45, No. 2. pp. 241-245.
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Marchenkov, VV, Domozhirova, AN, Makhnev, AA, Shreder, EI, Naumov, SV, Chistyakov, VV, Huang, J-C & Eisterer, M 2019, 'Electronic transport and optical properties of Mo0.5W0.5Te2 single crystal', Low Temperature Physics, vol. 45, no. 2, pp. 241-245. https://doi.org/10.1063/1.5086421

Electronic transport and optical properties of Mo0.5W0.5Te2 single crystal. / Marchenkov, V. V.; Domozhirova, A. N.; Makhnev, A. A.; Shreder, E. I.; Naumov, S. V.; Chistyakov, V. V.; Huang, Jung-Chun; Eisterer, M.

In: Low Temperature Physics, Vol. 45, No. 2, 01.02.2019, p. 241-245.

Research output: Contribution to journalArticle

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Marchenkov VV, Domozhirova AN, Makhnev AA, Shreder EI, Naumov SV, Chistyakov VV et al. Electronic transport and optical properties of Mo0.5W0.5Te2 single crystal. Low Temperature Physics. 2019 Feb 1;45(2):241-245. https://doi.org/10.1063/1.5086421