Characterization of collective ground states in single-layer NbSe 2
Miguel M. Ugeda,Miguel M. Ugeda,Aaron J. Bradley,Yi Zhang,Yi Zhang,Yi Zhang,Seita Onishi,Yi Chen,Wei Ruan,Wei Ruan,Claudia Ojeda-Aristizabal,Claudia Ojeda-Aristizabal,Claudia Ojeda-Aristizabal,Hyejin Ryu,Mark T. Edmonds,Mark T. Edmonds,Hsin-Zon Tsai,Alexander Riss,Alexander Riss,Sung-Kwan Mo,Dung-Hai Lee,Alex Zettl,Alex Zettl,Zahid Hussain,Zhi-Xun Shen,Zhi-Xun Shen,Michael F. Crommie,Michael F. Crommie +27 more
TL;DR: In this paper, it was shown that superconductivity and charge density wave ordering can remain intact in just a single layer of niobium diselenide, even when the material is thinned.
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Abstract: What happens to correlated electronic phases—superconductivity and charge density wave ordering—as a material is thinned? Experiments show that both can remain intact in just a single layer of niobium diselenide.
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Citations
A full gap above the Fermi level: the charge density wave of monolayer VS2.
Camiel van Efferen,Jan Berges,Joshua Hall,Erik G. C. P. van Loon,Stefan Kraus,Arne Schobert,Tobias Wekking,Felix Huttmann,Eline Plaar,Nico Rothenbach,Katharina Ollefs,Lucas M. Arruda,N. B. Brookes,Gunnar Schönhoff,Kurt Kummer,Heiko Wende,Tim O. Wehling,Tim O. Wehling,Thomas Michely +18 more
TL;DR: In this paper, the authors showed that the non-linear coupling of transverse and longitudinal phonons is essential for the formation of the charge density wave (CDW) and the full gap above the Fermi level.
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•Posted Content
Suppression of magnetoresistance in thin $WTe_2$ flakes by surface oxidation
John M. Woods,Jie Shen,Piranavan Kumaravadivel,Y. Pang,Yujun Xie,Grace A. Pan,M. Li,Eric I. Altman,Li Lu,Judy J. Cha +9 more
TL;DR: This study shows that WTe2 develops an ∼2 nm thick amorphous surface oxide, which shifts the Fermi level by ∼300 meV at the WTe1 surface, and observes a dramatic suppression of the magnetoresistance for thin flakes.
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Collective states and charge density waves in the group IV transition metal trichalcogenides
TL;DR: In this paper, the authors introduce the different classifications of charge density wave (CDW) systems that have been proposed and discuss work on the group IV transition metal trichalcogenides (TMTs), which are an exciting and emergent material system whose members exhibit quasi-one-dimensional properties.
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Visualizing the Anomalous Charge Density Wave States in Graphene/NbSe2 Heterostructures.
Yu Chen,Yu Chen,Lishu Wu,Hai Xu,Hai Xu,Chunxiao Cong,Si Li,Shun Feng,Hongbo Zhang,Chenji Zou,Jingzhi Shang,Jingzhi Shang,Shengyuan A. Yang,Kian Ping Loh,Wei Huang,Wei Huang,Ting Yu +16 more
TL;DR: The findings propose a new criterion to determine the TCDW through monitoring the line shape of the A1g mode and discover the 2D band is also discovered as an indicator to observe the CDW transitions.
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Real-space anisotropy of the superconducting gap in the charge-density wave material 2H-NbSe2
Antonio Sanna,Camilla Pellegrini,Eva Liebhaber,Kai Rossnagel,Katharina J. Franke,E. K. U. Gross +5 more
TL;DR: In this paper , a scanning tunneling microscopy (STM) and ab-initio study of the anisotropic superconductivity of 2H-NbSe 2 in the charge-density-wave (CDW) phase is presented.
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