Reconstructing the bulk Fermi surface and the superconducting gap properties from Neutron Scattering experiments

Abstract

We develop an analytical tool to extract bulk electronic properties of unconventional superconductors through inelastic neutron scattering (INS) spectra. Since the spin excitation spectrum in the superconducting (SC) state originates from Bogoliubov quasiparticle scattering associated with Fermi surface nesting, its energy-momentum relation--the so called `hour-glass' feature--can be inverted to reveal the Fermi momentum dispersion of the single-particle spectrum as well as the corresponding SC gap function. The inversion procedure is analogous to the quasiparticle interference (QPI) effect in scanning tunneling microscopy (STM). Whereas angle-resolved photoemission spectroscopy (ARPES) and STM provide surface sensitive information, our inversion procedure provides bulk electronic properties. The technique is essentially model independent and can be applied to a wide variety of materials.

8 pages, 4 figures

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Cited by in corpus (13)

• Intermediate Coupling Model of the Cuprates
• Evidence of Nodal Line in the Superconducting Gap Symmetry of Noncentrosymmetric ThCoC${}_2$
• Magnonlike dispersion of spin resonance in Ni-doped BaFe${}_2$As${}_2$
• Q=0 collective modes originating from the low-lying Hg-O band in the superconducting HgBa2CuO4+δ
• Theory of nodal s+- wave pairing symmetry in the Pu-based 115 superconductor family
• Phase Competition and Anomalous Thermal Evolution in High-Temperature Superconductors
• Visualizing electron pockets in cuprate superconductors
• Doping evolution of the normal state magnetic excitations in pressurized La3Ni2O7
• Crossover from inelastic magnetic scattering of Cooper pairs to spin-wave dispersion produces low-energy kink in cuprates
• Testing the sign-changing superconducting gap in iron-based superconductors with quasiparticle interference and neutron scattering
• Discerning electronic fingerprints of nodal and antinodal nestings and their phase coherences in doped cuprate superconductors
• The commensurate magnetic excitations induced by band-splitting and Fermi surface topology in n-type Cuprates
• Variational Monte Carlo study of spin dynamics in underdoped cuprates