Spatiotemporal buildup of the Kondo screening cloud

Scaling theory of the Kondo screening cloud.

A scaling form for the local susceptibility, derived from renormalization group arguments, is proposed. The scale over which the uniform part of this scaling form varies can be viewed as a definition of the Kondo “screening cloud” ∼ ξK . The proposed scaling form interpolates between Ruderman-KittelKasuya-Yosida (RKKY) results in the high temperature limit, T ≫ TK , and Fermi liquid results in ...

Spatiotemporal Variations of Total Cloud Cover and Cloud Optical Thickness in Iran

A knowledge of cloud properties and spatiotemporal variations of clouds is especially crucial to understand the radiative forcing of climate. This research aims to study cloudiness in Iran using the most recent satellite data, powerful databases, and regional and seasonal analyses. In this study, three data series were used for the spatiotemporal variations of cloudiness in the country: A) Clou...

Photoelectrons and Multipacting in the LHC: Electron Cloud Buildup

A simple quasi-analytic model is developed for the dynamics of electron cloud generated by synchrotron radiation of the beam in the LHC beam pipe. The model allows to obtain a multipacting condition for the LHC parameters, takes into account the space charge effect and predicts an equilibrium density of the electrons. Based on this model, we find the electron lifetime and estimate the energy de...

Kondo Screening Cloud and the Charge Staircase in One- Dimensional Mesoscopic Devices

Quantitative Calculation of the Spatial Extension of the Kondo Cloud

The internal s-electron polarization in the ground state of a Friedel-Anderson and a Kondo impurity is calculated. The Wilson basis with exponentially fine energies close to the Fermi level is used and expressed in terms of free electron waves with linear energy-momentum dispersion. It is found that in the singlet state the magnetic moment of the d-electron is screened by an s-electron cloud. T...