Mesoscopic physics

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Information about the exam

Mesoscopic physics is a given by professor Houssa. There is only a final exam, consisting of two questions. Mathematical detail is not required and the emphasis is more on the physical interpretation of the formulas discussed during the lectures.

Exam questions

14/01/2019

  • Question 1

Explain the occurrence of a metal-insulator transition in a disordered solid.

  • Question 2

Describe the Stoner criterion for magnetism. Use this criterion to explain the occurrence of a ferromagnetic order in 2D material, like e.g. hole-doped SnO monolayers.

Questions from earlier years

  • Explain why the Drude model breaks down in mesoscopic systems and describe with respect to characteristic length scales.
  • Explain the quantum Hall effect, the quantum spin Hall effect and topological insulators.
  • What is the Mott transition?
  • Explain the type of tunneling that happens in an Si/SiO2 interface.
  • What is resonant tunneling?
  • What is the Landau model?
  • How is a CNT conceptually formed, starting from a graphene sheet? What are the different types of CNT, based on their symmetry properties, and what is the implication on their transport properties? Oral questions: Dependence of SC CNTs Band Gap with its geometry. How to grow specific types of CNTs? Difference between Quantum Hall effect in Graphene and 2DEG? Difference regarding temperature?