COOKIES: By using this website you agree that we can place Google Analytics Cookies on your device for performance monitoring. |

University of Cambridge > Talks.cam > Isaac Newton Institute Seminar Series > Fermi surface topology and topological numbers in conductivity of normal metals

## Fermi surface topology and topological numbers in conductivity of normal metalsAdd to your list(s) Download to your calendar using vCal - Mal'tsev, A (Landau Institute for Theoretical Physics, Moscow)
- Wednesday 21 November 2012, 11:30-12:30
- Seminar Room 1, Newton Institute.
If you have a question about this talk, please contact Mustapha Amrani. Topological Dynamics in the Physical and Biological Sciences We consider the geometry of the quasiclassical electron trajectories on complicated Fermi surfaces in the presence of a strong magnetic field. Using rigorous topological theorems we present the classification of different topological types of open electron trajectories on the Fermi surfaces and consider the corresponding conductivity regimes in the limit $B ightarrow infty$. It is shown that the presence of the regular non-closed electron trajectories always leads to the presence of ‘topological numbers’ observable in the conductivity behaviour. On the other hand, the appearance of unstable non-closed electron trajectories may lead to rather interesting behaviour of conductivity, in particular, to the freezing of the longitudinal conductivity in the limit $B ightarrow infty$. The full picture of different regimes of magneto-conductivity behaviour can be considered as an important characteristic of the dispersion relation in metals. (Joint work with S.P. Novikov). This talk is part of the Isaac Newton Institute Seminar Series series. ## This talk is included in these lists:- All CMS events
- Featured lists
- INI info aggregator
- Isaac Newton Institute Seminar Series
- School of Physical Sciences
- Seminar Room 1, Newton Institute
Note that ex-directory lists are not shown. |
## Other lists2016 lists Mr Keynes and the Moderns Cambridge Usability Group## Other talksRobert Hanson on Prediction Markets History of Migration Law Using Novel Data Sources to Model Commodity Markets “Learning Through Crowdfunding” Large Data Limits for Graphical Models Single Cell Seminars (October) |