Quantum oscillations in electron doped high temperature superconductors

TL;DR

This paper explains quantum oscillations observed in electron-doped high-temperature superconductors using density wave theory and transfer matrix calculations, highlighting similarities with hole-doped cuprates.

Contribution

It offers a novel explanation for quantum oscillations in electron-doped cuprates through density wave models and advanced computational methods.

Findings

Quantum oscillations observed in electron-doped cuprates are explained by density wave formation.

The transfer matrix method successfully reproduces conductance oscillations as a function of magnetic field.

Results suggest a common underlying Fermi surface reconstruction in both electron- and hole-doped cuprates.

Abstract

Quantum oscillations in hole doped high temperature superconductors are difficult to understand within the prevailing views. An emerging idea is that of a putative normal ground state, which appears to be a Fermi liquid with a reconstructed Fermi surface. The oscillations are due to formation of Landau levels. Recently the same oscillations were found in the electron doped cuprate, $\mathrm{Nd_{2-x}Ce_{x}CuO_{4}}$, in the optimal to overdoped regime. Although these electron doped non-stoichiometric materials are naturally more disordered, they strikingly complement the hole doped cuprates. Here we provide an explanation of these observations from the perspective of density waves using a powerful transfer matrix method to compute the conductance as a function of the magnetic field.