Orbital Mott transition in two dimensional pyrochlore lattice
Citation:
Saket, A., Tiwari, R., Orbital Mott transition in two dimensional pyrochlore lattice, Journal of Physics Condensed Matter, 2020, 32, 25Download Item:
Abstract:
We study orbital Mott transition in two dimensional pyrochlore lattice, using a two orbital Hubbard model with only inter-orbital electronic hopping. We use a real space Monte Carlo based approach to study the model at nite temperature, and establish temperature-interaction phase diagram that highlights the Mott transition, orbital ordering, and spectral trends, and possible window of pseudogap. Due to only inter-orbital hopping, the Mott insulator ‘generates’ ferro exchange resulting in ferro-orbital ordering, with Tcorr/t peaked at ≈0.2 around U/t ≈ 6. The optical conductivity shows unusual two peak feature due to two dimensional pyrochlore lattice.
Sponsor
Grant Number
European Research Council (ERC)
QUEST
TCD
Author's Homepage:
http://people.tcd.ie/tiwarirDescription:
PUBLISHED
Author: Tiwari, Rajarshi
Sponsor:
European Research Council (ERC)TCD
Type of material:
Journal ArticleCollections
Series/Report no:
Journal of Physics Condensed Matter;32;
25;
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Full text availableKeywords:
Monte Carlo, Pyrochlore lattice, Orbital Mott transitionSubject (TCD):
Computational Physics , Condensed Matter Theory , Condensed matter, electronic, magnetic and superconductive properties , PHYSICSDOI:
http://dx.doi.org/10.1088/1361-648X/ab7a4bISSN:
1361648X 09538984Metadata
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