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4 papers · 1 filter
KCrO predicted as a half-metallic ferromagnet: Scenario for a metal-insulator transition
M. Sakamaki, T. Konishi, Y. Ohta
Based on the first-principles electronic structure calculations, we predict that a chromium oxide KCrO of hollandite type should be a half-metallic ferromagnet where…
Effective Coulomb interactions in solids under pressure
Jan M. Tomczak, T. Miyake, R. Sakuma +1
Correlated materials are extremely sensitive to external stimuli, such as temperature or pressure. Describing the electronic properties of such systems often requires applying many…
Ring Exchange Mechanism for Triplet Superconductivity in a Two-Chain Hubbard Model: Possible Relevance to Bechgaard Salts
Y. Ohta, S. Nishimoto, T. Shirakawa +1
The density-matrix renormalization group method is used to study the ground state of the two-chain zigzag-bond Hubbard model at quarter filling. We show that, with a proper choice…
Phase Diagram of the ------ Model at Quarter Filling
Satoshi Ejima, Florian Gebhard, Satoshi Nishimoto +1
We examine the ground-state properties of the one-dimensional Hubbard model at quarter filling with Coulomb interactions between nearest-neighbors and next-nearest neighbors…