Oscillations of the magnetic polarization in a Kondo impurity at finite magnetic fields
arXiv:0901.3347 · doi:10.1140/epjb/e2009-00405-y
Abstract
The electronic properties of a Kondo impurity are investigated in a magnetic field using linear response theory. The distribution of electrical charge and magnetic polarization are calculated in real space. The (small) magnetic field does not change the charge distribution. However, it unmasks the Kondo cloud. The (equal) weight of the d-electron components with their magnetic moment up and down is shifted and the compensating s-electron clouds don't cancel any longer (a requirement for an experimental detection of the Kondo cloud). In addition to the net magnetic polarization of the conduction electrons an oscillating magnetic polarization with a period of half the Fermi wave length is observed. However, this oscillating magnetic polarization does not show the long range behavior of Rudermann-Kittel-Kasuya-Yosida oscillations because the oscillations don't extend beyond the Kondo radius. They represent an internal electronic structure of the Kondo impurity in a magnetic field. PACS: 75.20.Hr, 71.23.An, 71.27.+a
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Cited by in corpus (5)
- Real-space renormalization group flow in quantum impurity systems: local moment formation and the Kondo screening cloud
- Friedel Oscillation about a Friedel-Anderson Impurity
- Numerical Calculation of the Fidelity for the Kondo and the Friedel-Anderson Impurities
- Long-range Entanglement of Kondo Clouds in Open Triple Quantum Dots
- A universal definition of the Kondo energy from the orthogonality catastrophe