Charge Density Waves and the Effects of Uniaxial Strain on the Electronic Structure of 2H-NbSe${}_2$

Abstract

Interplay of superconductivity and density wave orders has been at the forefront of research of correlated electronic phases for a long time. 2H-NbSe${}_2$ is considered to be a prototype system for studying this interplay, where the balance between the two orders was proven to be sensitive to band filling and pressure. However, the origin of charge density wave in this material is still unresolved. Here, by using angle-resolved photoemission spectroscopy, we revisit the charge density wave order and study the effects of uniaxial strain on the electronic structure of 2H-NbSe${}_2$. Our results indicate previously undetected signatures of charge density waves on the Fermi surface. The application of small amount of uniaxial strain induces substantial changes in the electronic structure and lowers its symmetry. This, and the altered lattice should affect both the charge density wave phase and superconductivity and should be observable in the macroscopic properties.

arXiv comment9 pages, 6 figures

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Cited by in corpus (4)

• Interplay of Kondo Physics with Incommensurate Charge Density Waves in CeTe${}_3$
• Magnetic Frustration Enforced Electronic Reconstruction in Ni intercalated NbSe${}_2$: Suppression of Electronic Orders
• Modulation of superconducting properties by the charge density wave at the surface of 2H-NbSe2
• Resonant interlayer coupling in NbSe${}_2$-graphite epitaxial moir{é} superlattices