Neutron Scattering and Its Application to Strongly Correlated Systems

Abstract

Neutron scattering is a powerful probe of strongly correlated systems. It can directly detect common phenomena such as magnetic order, and can be used to determine the coupling between magnetic moments through measurements of the spin-wave dispersions. In the absence of magnetic order, one can detect diffuse scattering and dynamic correlations. Neutrons are also sensitive to the arrangement of atoms in a solid (crystal structure) and lattice dynamics (phonons). In this chapter, we provide an introduction to neutrons and neutron sources. The neutron scattering cross section is described and formulas are given for nuclear diffraction, phonon scattering, magnetic diffraction, and magnon scattering. As an experimental example, we describe measurements of antiferromagnetic order, spin dynamics, and their evolution in the La(2-x)Ba(x)CuO(4) family of high-temperature superconductors.

31 pages, chapter for "Strongly Correlated Systems: Experimental Techniques", edited by A. Avella and F. Mancini

References in corpus (6)

• CODATA Recommended Values of the Fundamental Physical Constants: 2010
• Striped superconductors: How the cuprates intertwine spin, charge and superconducting orders
• Anomalous High-Energy Spin Excitations in La2CuO4
• Magnetic neutron scattering in hole doped cuprate superconductors
• High-energy magnetic excitations from dynamic stripes in LBCO (x=1/8)
• Transport Properties of Stripe-Ordered High Tc Cuprates

Cited by in corpus (5)

• Cuprate superconductors as viewed through a striped lens
• Doping Dependence of Collective Spin and Orbital Excitations in Spin 1 Quantum Antiferromagnet La${}_{2-x}$Sr${}_x$NiO${}_4$ Observed by X-rays
• "Quasi-particle breakdown" in the quasi-one-dimensional Ising ferromagnet CoNb${}_2$O${}_6$
• Low energy magnons in the chiral ferrimagnet ${\text{Cu}}_2{\text{OSeO}}_3$: a coarse-grained approach
• Understanding Spin Configuration in the Geometrically Frustrated Magnet TbB${}_4$: a Resonant Soft X-ray Scattering Study