From nanostructures to nanosensing applications = Dalle nanostrutture alle applicazioni nanosensoriali / edited by A. D'Amico and A. Paoletti, directors of the course and G. Balestrino ; Varenna on Lake Como, Villa Monastero, 20-30 July 2004.

Includes bibliographical references.

Print version record.

Title Page -- Indice -- Preface -- Gruppo fotografico dei partecipanti al Corso -- Spin dephasing and ''hot spins'' -- Introduction -- NEGF method -- What constitutes a dephasing process? -- Proposed ''spin-charge transducer'' -- Spin valve with magnetic impurities -- Hot-spin effect -- NEGF equations: A summary -- Inputs to the NEGF model -- NEGF equations -- NEGF model: Spin valve with impurities -- Channel -- Contacts -- Current -- Green function, spectral function and the correlation function -- Spin-flip current -- NEGF vs. equivalent circuit -- ''Hot spin'' effect.

Dynamic polarization of impurities -- Time constant for impurity polarization -- Concluding remarks -- Appendix A. Dephasing in the NEGF formalism -- Evaluating Dn and Dp using eqs (A.4) -- Appendix B. MATLAB codes used to generate text figures -- Ginzburg-Landau phenomenology: its role in the modern theory of superconductivity and studies of nanograin properties -- Introduction -- Qualitative picture of fluctuations in superconductors -- Ginzburg-Landau theory -- GL functional -- Heat capacity jump -- GL equations -- Fluctuation contribution to heat capacity of the superconducting nanograin.

Ultrasmall superconducting grains -- Superconducting drops in system with quenched disorder: the smearing of the superconducting transition -- Josephson coupled superconducting grains and drops -- Classical phase transition in granular superconductors -- XY-model for granular superconductor -- GL description of the granular superconductor -- The broadening of the superconducting transition by quenched disorder -- Percolation superconductivity in granular and drop systems -- Wigner transport in the presence of phonons: Particle models of electron kinetics -- Introduction.

Classical and quantum distribution functions -- Classical statistical mechanics -- The Weyl transform -- The density matrix -- The Wigner function for pure state -- Properties of the Wigner function -- Classical limit of the Wigner equation -- Quantum-statistical mechanics -- Appendix -- Generalized Wigner function of the coupled electron-phonon system -- Weak coupling and equilibrium phonons approximations -- Weak coupling -- Equilibrium phonon averages -- Models for the electron Wigner function -- Main model for the electron Wigner function -- The Levinson equation.

Collisional broadening and retardation -- The intra-collisional field effect (ICFE) -- Approximate model for the reduced WF -- Classical limit in the electron-phonon interaction -- Particle models for the Wigner-Boltzmann equation -- Concepts of Monte Carlo method -- Random variable -- Evaluation of integrals -- Evaluation of integral equations -- Physical averages in the stationary Wigner-Boltzmann transport: probabilistic analysis -- Formulation and reformulation of the transport problem -- Integro-differential form revised -- Integral form -- Adjoint equation -- Analysis of A.

Nanoscience and Nanotechnologies have grown increasingly fast for the last 20 years - after a somehow slow start - with an exceptional impact upon understanding of Nature, development of Science and related applications. Several new materials have been built and the possibility of tailoring their properties for particular purposes has opened unexpected perspectives in a multidisciplinary scenario. Furthermore, economy has also been deeply involved in this effort as a consequence of the fact that a significant amount of money has been invested in new enterprises with the hope of duplicating the.

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