Moving Dirac nodes by chemical substitution - Archive ouverte HAL
Article Dans Une Revue Proceedings of the National Academy of Sciences of the United States of America Année : 2021

Moving Dirac nodes by chemical substitution

Pascal Simon
Ivana Vobornik
Jun Fujii
Marino Marsi

Résumé

Significance The on-demand control of topological properties with readily modifiable parameters is a fundamental step toward the design of novel electronic and spintronic devices. Here, we show that this goal can be achieved in the correlated system BaCo 1 − x Ni x S 2 , where we succeeded in significantly changing the reciprocal space position and shape of Dirac nodes by chemically substituting Ni with Co. We prove that the tunability of the Dirac states is realized by varying the electron-correlation strength and the charge-transfer gap, both sensitive to the substitution level, x . Based on our finding, a class of late-transition metal compounds can be established as prototypical for engineering highly tunable Dirac materials.

Dates et versions

hal-04444056 , version 1 (07-02-2024)

Identifiants

Citer

Niloufar Nilforoushan, Michele Casula, Adriano Amaricci, Marco Caputo, Jonathan Caillaux, et al.. Moving Dirac nodes by chemical substitution. Proceedings of the National Academy of Sciences of the United States of America, 2021, 118 (33), ⟨10.1073/pnas.2108617118⟩. ⟨hal-04444056⟩
21 Consultations
0 Téléchargements

Altmetric

Partager

More