|COOKIES: By using this website you agree that we can place Google Analytics Cookies on your device for performance monitoring.|
Fermi surface topology and topological numbers in conductivity of normal metals
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:
Note that ex-directory lists are not shown.
Other listsIndo-European Seminar Behaviour, Ecology & Evolution Seminar Series Festival of Ideas
Other talksGalactic Structure and Dynamics: Disc and Halo Privacy/Proxy/Perfidy -- what criminals (& others) put in domain whois In vivo models Comprehensive transcriptome and epigenome sequencing of hypoxic breast cancer reveals non-coding RNAs associated with clinicopathological features ‘Though this be madness, yet there is method in't’. Landscapes and Identities: the case of the English Landscape c. 1500 BC – AD 1086 E_6 and the arithmetic of some non-hyperelliptic curves