# Grégoire Bonfait

## Associate Professor (with “Habilitation”), Physics Departement

Faculty of Sciences and Technology, Universidade Nova de Lisboa (email)

Faculty of Sciences and Technology, Universidade Nova de Lisboa (email)

Offered:

2015 **I- Phenomenology of superconductivity** (Resistivity and Meissner effect, phase diagrams, superconductors type I and II)**II- Introduction to phenomenological theories** (Theory London. magnetic fiel penetration length. *Ginzburg-Landau theory: free energy "à la Landau" order parameter equations of Ginzburg Landau, comprimentode consistency,* vortices, and Bc1 Bc2.)**III- Application to superconducting coils** (Resistance of superconductors, vortex pinning, critical current, technology of superconducting wires, calculating a coil)

Semester:

Fall
Offered:

2015 **1. Introduction: **Why and When. The main issues of Cryogenics**2. Cryogenics liquids: **My first cryostat. Cryogenics liquids. The case of 3He and 4He. Main features of Cryogenics Liquids**3. Heat transfer by radiation: **Stefan-Boltzman law. Thermal shields at constant temperature. Multilayers insulation, MLI

Semester:

Spring **1.Random Walk. Probability and statistics****2. Fundamentals of Thermodynamics.****3. Microcanonical statistics.****4. Canonical statistics****5 The Perfect classical Gas****6. Grande Canonical statistics. Quantum statistics****7. Sommerfeld model for electrons in metals**