Projekteja vuodessa
Abstrakti
Transition metal dichalcogenides (TMDC) are a rich family of two-dimensional materials displaying a multitude of different quantum ground states. In particular, d3 TMDCs are paradigmatic materials hosting a variety of symmetry broken states, including charge density waves, superconductivity, and magnetism. Among this family, NbSe2 is one of the best-studied superconducting materials down to the monolayer limit. Despite its superconducting nature, a variety of results point toward strong electronic repulsions in NbSe2. Here, we control the strength of the interactions experimentally via quantum confinement and use low-temperature scanning tunneling microscopy (STM) and spectroscopy (STS) to demonstrate that NbSe2 is in close proximity to a correlated insulating state. This reveals the coexistence of competing interactions in NbSe2, creating a transition from a superconducting to an insulating quantum correlated state by confinement-controlled interactions. Our results demonstrate the dramatic role of interactions in NbSe2, establishing NbSe2 as a correlated superconductor with competing interactions.
Alkuperäiskieli | Englanti |
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Sivut | 1845-1850 |
Sivumäärä | 6 |
Julkaisu | Nano Letters |
Vuosikerta | 22 |
Numero | 5 |
Varhainen verkossa julkaisun päivämäärä | 15 helmik. 2022 |
DOI - pysyväislinkit | |
Tila | Julkaistu - 9 maalisk. 2022 |
OKM-julkaisutyyppi | A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä |
Sormenjälki
Sukella tutkimusaiheisiin 'Confinement-Engineered Superconductor to Correlated-Insulator Transition in a van der Waals Monolayer'. Ne muodostavat yhdessä ainutlaatuisen sormenjäljen.-
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ADaM: Keinotekoiset designer-materiaalit
Liljeroth, P., Aapro, M., Amini, M., Gonzalez Herrero, H., Khosravian, M., Drost, R., Kipnis, A., Otero Fumega, A., Arslan, B. & Karjasilta, A.
01/01/2019 → 31/12/2023
Projekti: Academy of Finland: Other research funding
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E-DESIGN: Artificial designer materials
Liljeroth, P., Alldritt, B., Huang, X., Huda, M. N., Xu, C., Ganguli, S. C., Vano, V. & Yan, L.
15/08/2018 → 31/08/2024
Projekti: EU: ERC grants