Parity-dependent Kondo effect in ultrasmall metallic grains

Abstract

We study the Kondo effect in an ultrasmall metallic grain, i.e. small enough to have a discrete energy-level spectrum, by calculating the susceptibility chi of the magnetic impurity. Our quantum Monte Carlo simulations, and analytic solution of a simple model, show that the behavior changes dramatically depending on whether the number of electrons in the grain is even or odd. We suggest that the measurements of chi provide an effective experimental way of probing the grain's number parity.

7 pages, 5 figures, accepted for publication on Europhysics Letters

References in corpus (7)

• Revival of the Kondo effect
• Spectroscopy of discrete energy levels in ultrasmall metallic grains
• The Kondo Box: A Magnetic Impurity in an Ultrasmall Metallic Grain
• Detecting the Kondo screening cloud in conductance measurements on quantum dots
• Re-entrant spin susceptibility of a superconducting grain
• Kondo impurities in nanoscopic systems: new confinement-induced regimes
• Mesoscopic fluctuations in superconducting dots at finite temperatures

Cited by in corpus (4)

• Many-Body Physics and Quantum Chaos
• Competition between Kondo screening and indirect magnetic exchange in a quantum box
• The Mesoscopic Kondo Box: A Mean-Field Approach
• Kondo Screening and Indirect Magnetic Exchange through a Conventional Superconductor Studied by the Density-Matrix Renormalization Group