The Spin Mass of an Electron Liquid

Abstract

We show that in order to calculate correctly the {\it spin current} carried by a quasiparticle in an electron liquid one must use an effective "spin mass" $m_s$, that is larger than both the band mass, $m_b$, which determines the charge current, and the quasiparticle effective mass $m^{\ast }$, which determines the heat capacity. We present microscopic calculations of $m_s$ in a paramagnetic electron liquid in three and two dimensions, showing that the mass enhancement $m_s/m_b$ can be a very significant effect.

10 pages, 1 figure

References in corpus (4)

• Very large magnetoresistance in lateral ferromagnetic (Ga,Mn)As wires with nanoconstrictions
• Spin diffusion at finite electric and magnetic fields
• Analytical expressions for the charge-charge local-field factor and the exchange-correlation kernel of a two-dimensional electron gas
• Analytical expressions for the spin-spin local-field factor and the spin-antisymmetric exchange-correlation kernel of a two-dimensional electron gas

Cited by in corpus (3)

• Spin Drag and Spin-Charge Separation in Cold Fermi Gases
• The intrinsic charge and spin conductivities of doped graphene in the Fermi-Liquid regime
• Matsubara-Frequency-Resolved Spin Exchange-Correlation Kernel for the Three-Dimensional Uniform Electron Gas