Verma, A. K. ; Modak, P. ; Gaitonde, D. M. ; Rao, R. S. ; Godwal, B. K. ; Gupta, L. C. (2003) Possible high-temperature superconductivity in hole-doped MgB2C2 Europhysics Letters, 63 (5). pp. 743-749. ISSN 0295-5075
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Official URL: http://epljournal.edpsciences.org/articles/epl/abs...
Related URL: http://dx.doi.org/10.1209/epl/i2003-00592-1
Abstract
We report first-principles full potential linearised augmented plane wave calculations of the electronic band structure of the compound MgB2C2 and its hole-doped derivatives Mg0.5Li0.5B2C2, Mg0.5Na0.5B2C2, Mg0.9Na0.1B2C2 and Mg0.5K0.5B2C2. The parent compound MgB2C2 is a band insulator, which on hole doping, is predicted to turn metallic with a large density of states at the Fermi energy. Its band dispersion shows a flat band feature close to the Fermi energy, reminiscent of MgB2. Based on our estimates of changes in the density of states at the Fermi level, we predict that hole-doped MgB2C2 is a potential candidate for high-temperature superconductivity.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to EDP Sciences. |
| ID Code: | 11956 |
| Deposited On: | 10 Nov 2010 06:43 |
| Last Modified: | 02 Jun 2011 04:38 |
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