Uusi opinto-opas (sisältäen myös opetusohjelmat) lukuvuodelle 2018-2019 sijaitsee osoitteessa https://opas.peppi.utu.fi . Tältä sivustolta löytyvät enää vanhat opinto-oppaat ja opetusohjelmat.

The new study guide (incl. teaching schedules) for academic year 2018-2019 can be found at https://studyguide.utu.fi. This site contains only previous years' guides.

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Arkistoitu opetussuunnitelma 2014–2016
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FFYS7026 Point-contact spectroscopy 4 op
Organised by
Physics
Person in charge
Kurt Gloos
Planned organizing times
Period(s) I II III IV
2015–2016 X

General description

Nanoscience nowadays studies more and more complex nano-sized structures. This is important for applications, but the complexity of such devices can lead to losing track of the underlying principles and mechanisms. Point-contact spectroscopy, on the other hand, focusses on the properties of one of the most simple electronic devices: a point contact between two conductors. Although a lot is known about the properties of such devices, they are far from being completely understood. This applies especially for contacts with new materials.

Learning outcomes

In this course the students will learn the various methods to fabricate point-contact devices and to measure them. We will investigate the most basic transport mechanisms through such contacts: backscattering, tunneling, Andreev reflection, and the Josephson effect. We will apply this knowledge to discuss some of the most recent research papers on actual topics in point-contact spectroscopy. The students also have the opportunity to do a real experiment in the laboratory that involves fabrication, measurement, and analysis of a point contact. Choices are: a) Electron-phonon interaction at a N-N junction; b) Andreev reflection at a N-S contact; c) Josephson effect at a S-S junction.

Contents

Methods to fabricate point contacts between two conductors and their measurement.
Spectroscopy of normal-normal (N-N) structures: thermal and ballistic transport, electron-phonon interaction and backscattering, tunneling.
Andreev reflection at normal-superconducting (N-S) junctions and the BTK model.
Josephson effect at superconducting-superconducting (S-S) junctions and the RCSJ model.
Local heating and the dissipation of heat in the contact region.
Coulomb blockade, single-electron effects, Nazarov's horizon model.
Transport through single atoms and molecules.

Teaching methods

Teaching method Contact Online
Lectures 28 h 0 h
Exercises 12 h 0 h

Teaching language

English

Modes of study

Option 1
Available for:
  • Degree Programme Students
  • Other Students
  • Doctoral Students
  • Exchange Students
Written exam
  • In English
Participation in classroom work
  • In English

Exercise bonus

Evaluation

Numeric 0-5.

Recommended year of study

4. year autumn
5. year autumn

Belongs to following study modules

Fysiikan ja tähtitieteen laitos
Fysiikan ja tähtitieteen laitos
Kemian laitos
2015–2016
Teaching
Archived Teaching Schedule. Please refer to current Teaching Shedule.
Fysiikan ja tähtitieteen laitos
Opintokokonaisuudet