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3 votes

Is it possible to calculate/estimate the value of the J parameter to be used in the Heisenberg/Ising Hamiltonians?

I agree with Xivi76. One can use this method to determine J. However, a supercell should be used and the two atoms chosen for the four states should not interact with their periodic image. If the ...
Shashank's user avatar
2 votes

Original reference for gapped chiral fermion k·p model?

I am not sure whether the following are right, but these are what I ended up using: F. D. M. Haldane, Model for a Quantum Hall Effect without Landau Levels: Condensed-Matter Realization of the “...
TribalChief's user avatar
  • 2,361
2 votes

Is it possible to calculate/estimate the value of the J parameter to be used in the Heisenberg/Ising Hamiltonians?

For normal DFT use Noodleman’s broken symmetry approach. Noodleman This one may be relevant for magnetic systems: PRB2019 Edited: in the supporting information (p. 9) of JACS 2017, 139, 18448, Kieber-...
MSwart's user avatar
  • 1,084
2 votes

Where/when did the fields of Operations Research and Spin Physics or Molecular Dynamics begin to cross-pollinate?

The cross-pollination and exchange of ideas between the operations research and physics communities in the context of Ising optimization methods can be traced back to several key papers and ...
Jaafar Mehrez's user avatar
1 vote
Accepted

Electric-field/ length gauge : momentum displacement property

Thanks for adding your derivation. You made a common mistake, which is to treat $\hat{O}$ as an ordinary exponential function. However, here you are exponentiating an operator, which calls for more ...
Anyon's user avatar
  • 4,751

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