Transport evidence of mass-less Dirac fermions in (Cd1−x−yZnxMny)3As2 (x + y = 0.4) | Zendy

В. С. Захвалинский | Zendy; Т. Б. Никуличева | Zendy; E. A. Pilyuk | Zendy; E. Lähderanta | Zendy; M. A. Shakhov | Zendy; O. N. Ivanov | Zendy; E P Kochura | Zendy; А. В. Кочура | Zendy; Б. А. Аронзон | Zendy

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Transport evidence of mass-less Dirac fermions in (Cd_1−x−yZn_xMn_y)₃As₂ (x + y = 0.4)

Author(s) -

В. С. Захвалинский,

Т. Б. Никуличева,

E. A. Pilyuk,

E. Lähderanta,

M. A. Shakhov,

O. N. Ivanov,

E P Kochura,

А. В. Кочура,

Б. А. Аронзон

Publication year - 2020

Publication title -

materials research express

Language(s) - English

Resource type - Journals

ISSN - 2053-1591

DOI - 10.1088/2053-1591/ab688b

Subject(s) - physics , zinc , manganese , x ray crystallography , fermion , crystallography , materials science , analytical chemistry (journal) , chemistry , metallurgy , diffraction , optics , chromatography , quantum mechanics

Charge carriers parameters on a 2D-layer surface for (Cd 1−x−y Zn x Mn y ) 3 As 2 ( y = 0.08) (the concentration n 2 D = 1.9 × 10 12 cm –2 , the effective value of the 2D-layer d 2 D = n 2 D / n 3 D = 14.5 nm, the wave vector k F = 0.1 nm –1 , the charge carriers relaxation time due to dispersion τ D = 1.8 × 10 –13 s, the velocity of charge carriers on Fermi surface v F = ℏ k F / m c = 2.6 5 × 10 5 m s −1 , the mean free path l F = v F τ D = 47.7 nm) were determined. It was found that the dependence of the cyclotron m ass m с (0)/m 0 on Fermi wave vector k F for (Cd 1−x−y Zn x Mn y ) 3 As 2 ( y = 0.08) is in compliance with a theoretical linear dependence, that describes mass-less Dirac fermions.

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