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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Zeeman-type spin splitting in nonmagnetic three-dimensional compounds

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Author(s):
Acosta, Carlos Mera [1, 2] ; Fazzio, Adalberto [1, 2] ; Dalpian, Gustavo M. [1]
Total Authors: 3
Affiliation:
[1] Fed Univ ABC, Ctr Nat & Human Sci, BR-09210580 Santo Andre, SP - Brazil
[2] CNPEM, Brazilian Nanotechnol Natl Lab, BR-13083970 Campinas, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: NPJ QUANTUM MATERIALS; v. 4, AUG 7 2019.
Web of Science Citations: 3
Abstract

Despite its potential for device application, the nonmagnetic Zeeman effect has only been predicted and observed in two-dimensional compounds. We demonstrate that noncentrosymmetric three-dimensional compounds can also exhibit a Zeeman-type spin splitting, allowing the splitting control by changing the growth direction of slabs formed by these compounds. We determine the required conditions for this effect: (i) noncentrosymmetric including polar and nonpolar point groups, (ii) valence band maximum or conduction band minimum in a generic k-point, i.e., non-time-reversal-invariant momentum, and (iii) zero magnetic moment. Using these conditions as filters, we perform a material screening to systematically search for these systems in the AFLOW-ICSD database. We find 20 candidates featuring the Zeeman-type effect. We also find that the spin splitting in confined systems can be controlled by an external electric field, which in turns can induce a metal-insulator transition. We believe that this work will open the way for the discovery of novel fundamental effects related to the spin polarization control. (AU)

FAPESP's process: 18/11856-7 - Interface-induced effects in quantum materials
Grantee:Carlos Augusto Mera Acosta
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 17/02317-2 - Interfaces in materials: electronic, magnetic, structural and transport properties
Grantee:Adalberto Fazzio
Support Opportunities: Research Projects - Thematic Grants