Properties of a band Jahn-Teller system with strong electron correlations: Application to Yb4As3
UNSPECIFIED. (1997) Properties of a band Jahn-Teller system with strong electron correlations: Application to Yb4As3. PHYSICAL REVIEW LETTERS, 78 (17). pp. 3386-3389. ISSN 0031-9007Full text not available from this repository.
We solve exactly a multiband one-dimensional Jahn-Teller (JT) model with strong electron correlations using the Lieb-Wu Bethe ansatz equations. As well as the metallic undistorted phase, we find two JT distorted phases. The first is a conducting phase, in which most carriers sit on one chain with the remaining carriers distributed equally among the other chains. We suggest that this phase is what is observed at low temperatures in Yb4As3 In the second phase all the carriers sit on one chain. This phase becomes a Mott insulator when the chain is half filled. We also show that a mean-field treatment of the model is misleading and that an exact treatment of interactions is essential.
|Item Type:||Journal Article|
|Subjects:||Q Science > QC Physics|
|Journal or Publication Title:||PHYSICAL REVIEW LETTERS|
|Publisher:||AMERICAN PHYSICAL SOC|
|Official Date:||28 April 1997|
|Number of Pages:||4|
|Page Range:||pp. 3386-3389|
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