Towards fully compensated ferrimagnetic spin gapless semiconductors for spintronic applications

Y. J. Zhang; Z. H. Liu; E. K. Liu; G. D. Liu; X. Q. Ma; G. H. Wu

doi:10.1209/0295-5075/111/37009

All issues

Volume 111 / No 3 (August 2015)

EPL, 111 3 (2015) 37009

Abstract

Issue		EPL Volume 111, Number 3, August 2015


Article Number		37009
Number of page(s)		5
Section		Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties
DOI		https://doi.org/10.1209/0295-5075/111/37009
Published online		31 August 2015

EPL, 111 (2015) 37009

Towards fully compensated ferrimagnetic spin gapless semiconductors for spintronic applications

Y. J. Zhang¹, Z. H. Liu¹^(a), E. K. Liu³, G. D. Liu², X. Q. Ma¹ and G. H. Wu³

¹ Department of Physics, University of Science and Technology Beijing - Beijing 100083, PRC
² School of Material Science and Engineering, Hebei University of Technology - Tianjin 300130, PRC
³ State Key Laboratory for Magnetism, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences - Beijing 100190, PRC

^(a) zhliu@ustb.edu.cn

Received: 9 February 2015
Accepted: 30 July 2015

Abstract

Extensive first-principles calculations suggest that inverse Heusler compounds $\mathrm{Mn_2Si}$ , $\mathrm{Cr_2ZnGe}$ , $\mathrm{Cr_2ZnSn}$ , $\mathrm{Ti_2VP}$ and $\mathrm{Ti_2VSb_{0.5}As_{0.5}}$ are the candidates to achieve fully compensated ferrimagnetic spin gapless semiconductors. It is shown that only the holes can be 100% spin polarized in $\mathrm{Mn_2Si}$ , while both the excited electrons and the holes around the Fermi level 100% spin polarized in the others. A simple rule for searching potential fully compensated ferrimagnetic spin gapless semiconductors in Heusler compounds is proposed. Due to the spin gapless semiconducting and the fully compensated ferrimagnetic properties, these compounds offer distinct advantage towards the development of the practical spintronic devices.

PACS: 71.20.-b – Electron density of states and band structure of crystalline solids / 71.20.Lp – Intermetallic compounds / 75.50.Cc – Other ferromagnetic metals and alloys

© EPLA, 2015

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