Quantum oscillations from the reconstructed Fermi surface in electron-doped cuprate superconductors. (12th April 2018)

• Record Type: Journal Article
• Authors: Higgins, J S; Chan, M K; Sarkar, Tarapada; McDonald, R D; Greene, R L; Butch, N P
• Is Part Of: New journal of physics. Volume 20:Number 4(2018:Apr.)
• Publication Date: 2018-04-12
• Subjects: superconductivity -- cuprate -- electron-doped -- Fermi surface -- Shubnikov–de Hass; Physics -- Periodicals; Physics; Periodicals; 530.05
• DOI: 10.1088/1367-2630/aab7e7
• Languages: English
• ISSNs: 1367-2630

Abstract

Abstract: We have studied the electronic structure of electron-doped cuprate superconductors via measurements of high-field Shubnikov–de Haas oscillations in thin films. In optimally doped Pr2− x Ce x CuO4± δ and La2− x Ce x CuO4± δ, quantum oscillations indicate the presence of a small Fermi surface, demonstrating that electronic reconstruction is a general feature of the electron-doped cuprates, despite the location of the superconducting dome at very different doping levels. Negative high-field magnetoresistance is correlated with an anomalous low-temperature change in scattering that modifies the amplitude of quantum oscillations. This behavior is consistent with effects attributed to spin fluctuations.