Theory of Neutron Scattering in High-T$_c$ Cuprates: Two Component Spin-Fermion Model

Details Theory of Neutron Scattering in High-T$_c$ Cuprates: Two Component Spin-Fermion Model Theory of Neutron Scattering in High-T$_c$ Cuprates: Two Component Spin-Fermion Model

2007-06-11

arxiv.org/abs/0706.1387v2

Physics

Condensed Matter

Strongly Correlated Electrons

Correction of legend in Fig.1, No changes of contents

Scientific paper

Recent neutron scattering experiments have revealed that the generic form of the magnetic excitations in the high-Tc cuprates of wide range of doping has the so-called "hourglass" shape; it features both upward and downward excitations at the incommensurate (IC) momenta spanning from the resonance peak at the commensurate momentum $(\pi,\pi)$. We propose the two-component spin-fermion model as a minimal phenomenological model which has both local spins and itinerant fermions as independent degrees of freedom. Our calculations of the dynamic spin correlation function provide good agreement with experiments and show: (1) the upward dispersion branch of magnetic excitations is mostly due to the local spin excitations; (2) the downward dispersion branch is from collective spin excitations of fermions; (3) the resonance mode is a mixture of both degrees of freedom.

Affiliated with

Also associated with

No associations

Rating

Theory of Neutron Scattering in High-T$_c$ Cuprates: Two Component Spin-Fermion Model does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Theory of Neutron Scattering in High-T$_c$ Cuprates: Two Component Spin-Fermion Model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Theory of Neutron Scattering in High-T$_c$ Cuprates: Two Component Spin-Fermion Model will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-178922