dc.contributor.author | Dreher, Paul | |
dc.contributor.author | Wan, Wen | |
dc.contributor.author | Chikina, Alla | |
dc.contributor.author | Bianchi, Marco | |
dc.contributor.author | Guo, Haojie | |
dc.contributor.author | Harsh, Rishav | |
dc.contributor.author | Mañas-Valero, Samuel | |
dc.contributor.author | Coronado, Eugenio | |
dc.contributor.author | Martínez-Galera, Antonio J. | |
dc.contributor.author | Hofmann, Philip | |
dc.contributor.author | Miwa, Jill A. | |
dc.contributor.author | Moreno Ugeda, Miguel | |
dc.date.accessioned | 2022-01-25T09:43:53Z | |
dc.date.available | 2022-01-25T09:43:53Z | |
dc.date.issued | 2021-12-28 | |
dc.identifier.citation | ACS Nano 15(12) : 19430-19438 (2021) | es_ES |
dc.identifier.issn | 1936-086X | |
dc.identifier.uri | http://hdl.handle.net/10810/55143 | |
dc.description.abstract | Collective electronic states such as the charge density wave (CDW) order and superconductivity (SC) respond sensitively to external perturbations. Such sensitivity is dramatically enhanced in two dimensions (2D), where 2D materials hosting such electronic states are largely exposed to the environment. In this regard, the ineludible presence of supporting substrates triggers various proximity effects on 2D materials that may ultimately compromise the stability and properties of the electronic ground state. In this work, we investigate the impact of proximity effects on the CDW and superconducting states in single-layer (SL) NbSe2 on four substrates of diverse nature, namely, bilayer graphene (BLG), SL-boron nitride (h-BN), Au(111), and bulk WSe2. By combining low-temperature (340 mK) scanning tunneling microscopy/spectroscopy and angle-resolved photoemission spectroscopy, we compare the electronic structure of this prototypical 2D superconductor on each substrate. We find that, even when the electronic band structure of SL-NbSe2 remains largely unaffected by the substrate except when placed on Au(111), where a charge transfer occurs, both the CDW and SC show disparate behaviors. On the insulating h-BN/Ir(111) substrate and the metallic BLG/SiC(0001) substrate, both the 3 * 3 CDW and superconducting phases persist in SL-NbSe2 with very similar properties, which reveals the negligible impact of graphene on these electronic phases. In contrast, these collective electronic phases are severely weakened and even absent on the bulk insulating WSe2 substrate and the metallic single-crystal Au(111) substrate. Our results provide valuable insights into the fragile stability of such electronic ground states in 2D materials. | es_ES |
dc.description.sponsorship | We acknowledge fruitful discussions with Fernando de Juan,
Félix Ynduráin, Carmen Rubio-Verdú, and Javier Zaldívar. We
thank Marco Gobbi for carrying out check transport experi-
ments. M.M.U. acknowledges support by the ERC Starting grant
LINKSPM (grant 758558) and by the Spanish MINECO under
grant no. PID2020-116619GB-C21. J.A.M. acknowledges
financial support from the Danish Council for Independent
Research, Natural Sciences under the Sapere Aude program
(grant no. DFF-6108-00409). A.C, M.B., J.A.M., and P.H.
acknowledge support from the VILLUM FONDEN via the
Centre of Excellence for Dirac Materials (grant no. 11744).
A.J.M.-G. acknowledges funding by the Spanish MINECOthrough project no. PID2020-116619GA-C22. E.C. and S.M.-V.
acknowledge the Spanish MICINN (project PID2020-
117152RB-I00 cofinanced by FEDER and the Unit of
Excellence “Maria de Maeztu” CEX2019-000919-M) and the
Generalitat Valenciana (Prometeo Programme and PO FEDER
Program IDIFEDER/2018/061 and IDFEDER/2020/063).
R.H. acknowledges support from Marie Skłodowska-Curie
Individual Fellowships under HORIZON 2020 program for
project MAGTMD (101033538). | |
dc.language.iso | eng | es_ES |
dc.publisher | American Chemical Society | es_ES |
dc.relation | info:eu-repo/grantAgreement/MINECO/PID2020-116619GB-C21 | |
dc.relation | info:eu-repo/grantAgreement/MINECO/PID2020-116619GA-C22. | |
dc.relation | info:eu-repo/grantAgreement/MICINN/PID2020-
117152RB-I00 | |
dc.relation | info:eu-repo/grantAgreement/EC/H2020/101033538 | |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ | * |
dc.subject | angle-resolved photoemission spectroscopy | es_ES |
dc.subject | charge density wave | es_ES |
dc.subject | electronic structure | es_ES |
dc.subject | epitaxy | es_ES |
dc.subject | scanning tunneling microscopy | es_ES |
dc.subject | superconductivity | es_ES |
dc.subject | transition-metal dichalcogenide | es_ES |
dc.title | Proximity Effects on the Charge Density Wave Order and Superconductivity in Single-Layer NbSe2 | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.holder | 2021 The Authors. Published by American Chemical Society. This is an Open Access Article. This article is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) | es_ES |
dc.rights.holder | Atribución-NoComercial-SinDerivadas 3.0 España | * |
dc.relation.publisherversion | https://pubs.acs.org/doi/10.1021/acsnano.1c06012# | es_ES |
dc.identifier.doi | 10.1021/acsnano.1c06012 | |
dc.contributor.funder | European Commission | |