Article Dans Une Revue Journal of Superconductivity and Novel Magnetism Année : 2020

Fractionalizing a local pair density wave: a good "recipe" for opening a pseudo-gap

Résumé

We give a concise version of a recently proposed concept of fractionalization of an order parameter, thus generating a constraint through a fictitious gauge field 1. We argue that this new line of approach is key to explain the longstanding mystery of the pseudo-gap phase in cuprate superconductors. For example, the fractionalization of a finite momentum, charge two state living on latice bonds-also called Pair Density Wave, into a particleparticle and a particle-hole pair leads to the opening of a gap in the fermionic spectrum. It induces "phaselocking" between the particle-particle and particle-hole pairs. We describe the formation of the Fermi arcs in the spectrum and give an account of recent Raman spectroscopy results from a minimal microscopic model. We relate the "phase-locking" to intriguing STM experimental observations.
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Dates et versions

cea-04215580 , version 1 (22-09-2023)

Identifiants

Citer

M. Grandadam, D. Chakraborty, C. Pépin. Fractionalizing a local pair density wave: a good "recipe" for opening a pseudo-gap. Journal of Superconductivity and Novel Magnetism, 2020, 33 (8), pp.2361-2368. ⟨10.1007/s10948-019-05380-6⟩. ⟨cea-04215580⟩
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