Spin vs charge excitations in heavy-fermion compounds*

TL;DR

This paper argues that neutral spin-like excitations, rather than charge excitations, are responsible for the heavy-fermion phenomena, providing insight into their physical origin.

Contribution

It clarifies the dominant role of spin excitations over charge excitations in heavy-fermion compounds, advancing understanding of their underlying physics.

Findings

Spin-like excitations are responsible for heavy-fermion phenomena.

Charge excitations play a negligible role.

Supports the spin-based explanation of heavy-fermion behavior.

Abstract

It is pointed out that the answer on the question about the role played by spin and charge excitations will help to solve the physical origin of the heavy- fermion phenomena. Our answer is that neutral spin-like excitations are responsible for the heavy-fermion phenomena whereas the role of the charge excitations is negligible. Keywords: heavy fermion, spin excitations, charge excitations PACS No: 75.20.H