DMFT

Resolving the "chicken and egg" controversy in VO2

We study the Mott insulator state and the metal-insulator transition in the Dimer Hubbard Model. We argue that its basic physics may solve some longstanding controversies in VO2.

Our study predicts the correlated "monoclinic metal", which has been reported experimentally and remained puzzling.

Recent articles

Imaging the nanoscale phase separation in vanadium dioxide thin films at terahertz frequencies. H.T. Stinson, A. Sternbach, O. Najera, R. Jing, A.S. Mcleod, T.V. Slusar, A. Mueller, L. Anderegg, H.T. Kim, M. Rozenberg & D.N. Basov; Nature Communications 9, 3604 (2018).
Multiple crossovers and coherent states in a Mott-Peierls insulator. O. Nájera, M. Civelli, V. Dobrosavljevic, and M. J. Rozenberg, Phys. Rev. B 97, 045108 (2018)
Resolving the VO2 controversy: Mott mechanism dominates the insulator-to-metal transition. O. Nájera, M. Civelli, V. Dobrosavljević, and M. J. Rozenberg; Phys. Rev. B 95, 035113 (2017)

Tutorials and Book chapter

Dynamical Mean Field Theory and the Mott Transition. Is a friendly and physical introduction to the subject for both, theorist and experimentalist. Chapter in: Many-Body Methods for Real Materials Modeling and Simulation, Vol. 9, Eva Pavarini, Erik Koch, and Shiwei Zhang (eds.), Verlag des Forschungszentrum Jülich, (2019) ISBN 978-3-95806-400-3

(full book free available for download http://juser.fz-juelich.de/record/864818)

Numerical Exercises to solve the DMFT equations of the Hubbard model and observe the Mott transition

Review article

The Dynamical Mean Field Theory of Strongly Correlated Fermionic Systems and the Limit of Infinite Dimensions. A. Georges, G. Kotliar, W. Krauth and M. J. Rozenberg; Rev. Mod. Phys. 68, 13 (1996).