%0 Journal Article
%T Manipulating Dirac states in BaNiS$_2$ by surface charge doping
%+ Laboratoire de Physique des Solides (LPS)
%+ Laboratoire Charles Coulomb (L2C)
%+ Institut de minéralogie, de physique des matériaux et de cosmochimie (IMPMC)
%+ Laboratoire des Solides Irradiés - Irradiated Solids Laboratory (LSI)
%+ Elettra Sincrotrone Trieste
%+ Synchrotron SOLEIL (SSOLEIL)
%A Zhang, Jiuxiang
%A Sohier, Thibault Daniel Pierre
%A Casula, Michele
%A Chen, Zhesheng
%A Caillaux, Jonathan
%A Papalazarou, Evangelos
%A Perfetti, Luca
%A Petaccia, Luca
%A Bendounan, Azzedine
%A Taleb-Ibrahimi, Amina
%A Santos-Cottin, David
%A Klein, Yannick
%A Gauzzi, Andrea
%A Marsi, Marino
%< avec comité de lecture
%@ 1530-6984
%J Nano Letters
%I American Chemical Society
%V 23
%N 5
%P 1830-1835
%8 2023-03-08
%D 2023
%R 10.1021/acs.nanolett.2c04701
%K Dirac materials
%K time-resolved ARPES
%K BaNiS$_2$
%K charge transfer gap
%K surface electron doping
%Z Physics [physics]/Condensed Matter [cond-mat]Journal articles
%X In the Dirac semimetal BaNiS$_2$ , the Dirac nodes are located along the Γ − M symmetry line of the Brillouin zone, instead of being pinned at fixed high-symmetry points. We take advantage of this peculiar feature to demonstrate the possibility of moving the Dirac bands along the Γ − M symmetry line in reciprocal space by varying the concentration of K atoms adsorbed onto the surface of cleaved BaNiS$_2$ single crystals. By means of first-principles calculations, we give full account for this observation by considering the effect of the electrons donated by the K atom on the charge transfer gap, which establishes a promising tool for engineering Dirac states at surfaces, interfaces and heterostructures.
%G English
%2 https://hal.science/hal-04236886/document
%2 https://hal.science/hal-04236886/file/BaNiS2_K_submittedVersion.pdf
%L hal-04236886
%U https://hal.science/hal-04236886
%~ IRD
%~ CEA
%~ MNHN
%~ X
%~ CNRS
%~ IMPMC
%~ ALLINSP
%~ X-LSI
%~ X-DEP
%~ X-DEP-PHYS
%~ L2C
%~ CEA-UPSAY
%~ UNIV-PARIS-SACLAY
%~ SYNCHROTRON-SOLEIL
%~ UNIV-MONTPELLIER
%~ SORBONNE-UNIVERSITE
%~ SORBONNE-UNIV
%~ SU-SCIENCES
%~ IP_PARIS
%~ UNIVERSITE-PARIS-SACLAY
%~ SU-TI
%~ ANR
%~ IRAMIS
%~ GS-CHIMIE
%~ GS-PHYSIQUE
%~ GS-LIFE-SCIENCES-HEALTH
%~ INSTITUT-SCIENCES-LUMIERE
%~ LPSO
%~ ALLIANCE-SU
%~ URP-LPS
%~ UM-2015-2021
%~ UM-EPE