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
2D Vanadium Sulfides: Synthesis, Atomic Structure Engineering, and Charge Density Waves.
Camiel van Efferen,Joshua R. Hall,Nicolae Atodiresei,Virginia Boix,Affan Safeer,Tobias Wekking,Nikolay A Vinogradov,Alexei B Preobrajenski,Jan Knudsen,J. Fischer,Wouter Jolie,Thomas Michely +11 more
TL;DR: Two vanadium-rich 2D materials based on VS2 are synthesized and investigated. Single-layer VS2 islands exhibit patterned adsorption due to S-vacancy ordering. The atomic structure of the S-depleted phase and the charge density wave in the 2D V5S8-derived islands are determined.
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TL;DR: Strong coupling behavior combined with the absence of signatures of strong electron-phonon coupling indicates that the CDW is likely mediated by electronic interactions enhanced by low dimensionality.
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•Posted Content
Distinct nodal and nematic superconducting phases in the 2D Ising superconductor NbSe2
Chang-woo Cho,Jian Lyu,Tianyi Han,Cheuk Yin Ng,Yuxiang Gao,Gaomin Li,Mingyuan Huang,Ning Wang,Jörg Schmalian,Rolf Lortz +9 more
TL;DR: In this paper, the authors used field-angle-resolved magnetoresistance experiments for magnetic fields strictly rotated in the basal plane to investigate the dependence of the upper critical field (Hc2) on the orientation of the field in the plane.
Interlayer breathing and shear modes in NbSe2 atomic layers
Rui He,Jeremiah van Baren,Jia-An Yan,Xiaoxiang Xi,Zhipeng Ye,Gaihua Ye,I. Hsi Lu,S. M. Leong,Chun Hung Lui +8 more
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TL;DR: In this paper, the interlayer phonons of few-layer NbSe2 were investigated by ultralow-frequency Raman spectroscopy for samples of 2-15 layers.
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