Verified Commit 4b4d0819 authored by Anton Akhmerov's avatar Anton Akhmerov
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actually remove cocalc links

parent 8b8e4647
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## Simulations
As usual, start by grabbing the notebooks of this week (`w10_extensions`). They are once again over [here](http://tiny.cc/topocm_smc).
### Weyl semimetal with time-reversal symmetry.
Time-reversal symmetry has a very similar effect on Weyl semimetals as it has on gapless superconductors: it keeps the value of the Chern number around the Weyl point the same, and leads to appearance of quadruplets of Weyl points.
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## Simulation: powers combined
As usual, start by grabbing the notebooks of this week (`w11_extensions2`). They are once again over [here](http://tiny.cc/topocm_smc).
Are you tired yet of all the different kinds of topology? If no, this assignment is for you :-)
By now you should have a feel for how to make new topological phases. Your task now is to combine the two systems you've learned about and to create a Floquet crystalline topological insulator. If you want even more challenge, create also a gapless Floquet topological material.
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This is especially true since both of the assignments constitute a complete paper :)
As usual, start by grabbing the notebooks of this week (`w2_majorana`). They are once again over [here](http://tiny.cc/topocm_smc).
### Tilted magnetic field
Explore what happens when we change one the important knobs of the nanowire model, the external magnetic field. We studied what happens when $B$ is pointing along the $z$ direction. However, what happens when the magnetic field is tilted?
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## Simulations: more Chern insulators
As usual, start by grabbing the notebooks of this week (`w4_haldane`). They are once again over [here](http://tiny.cc/topocm_smc).
### Yet another Chern insulator
One more tight binding of a Chern insulator that you can encounter in the wild is a regular square lattice with half a flux quantum of magnetic field per unit cell. If you made the Hofstadter butterfly assignment from the previous week, it's just in the middle of the butterfly. Half a flux quantum per unit cell means that the hoppings in one direction are purely imaginary, and different rows have alternating signs
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## Simulations: more Chern insulators
As usual, start by grabbing the notebooks of this week (`w6_3dti`). They are once again over [here](http://tiny.cc/topocm_smc).
Simulations of the three-dimensional systems are hard, mostly because they take a lot of computational power. That's why we'll do something relatively simple this time.
### Breaking time-reversal
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## Simulations: Majorana defects
As usual, start by grabbing the notebooks of this week (`w7_defects`). They are once again over [here](http://tiny.cc/topocm_smc).
### Quantum spin Hall junction
Let us study the spectrum of a Josephson junction on a quantum spin Hall edge in more detail. As in the lecture, we can add a magnet in the middle of the junction, which adds a Zeeman energy term to the Hamiltonian.
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