Electronic and Lattice Dynamical Properties of the Iron-Based Superconductors LiFeAs and NaFeAs
The electronic structure and lattice vibrational frequencies of the newly discovered superconductors, LiFeAs and NaFeAs, are calculated within density functional theory. We show that, in the vicinity of the Fermi energy, the density of states is dominated by contributions from Fe 3d states. We also...
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| Format: | Article |
| Language: | English |
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Wiley
2010-01-01
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| Series: | Advances in Condensed Matter Physics |
| Online Access: | http://dx.doi.org/10.1155/2010/804343 |
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| author | R. A. Jishi H. M. Alyahyaei |
| author_facet | R. A. Jishi H. M. Alyahyaei |
| author_sort | R. A. Jishi |
| collection | DOAJ |
| description | The electronic structure and lattice vibrational frequencies of the newly discovered superconductors, LiFeAs and NaFeAs, are calculated within density functional theory. We show that, in the vicinity of the Fermi energy, the density of states is dominated by contributions from Fe 3d states. We also calculate the electron-phonon coupling strength and show that it is too weak to account for the observed values of the superconducting transition temperatures. This seems to indicate that the iron-based superconductors are not of the conventional type. |
| format | Article |
| id | doaj-art-f2c6e1ae83e1453dba9b5962a7efaca2 |
| institution | Kabale University |
| issn | 1687-8108 1687-8124 |
| language | English |
| publishDate | 2010-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Condensed Matter Physics |
| spelling | doaj-art-f2c6e1ae83e1453dba9b5962a7efaca22025-02-03T06:01:09ZengWileyAdvances in Condensed Matter Physics1687-81081687-81242010-01-01201010.1155/2010/804343804343Electronic and Lattice Dynamical Properties of the Iron-Based Superconductors LiFeAs and NaFeAsR. A. Jishi0H. M. Alyahyaei1Department of Physics, California State University, Los Angeles, CA 90032, USADepartment of Physics, California State University, Los Angeles, CA 90032, USAThe electronic structure and lattice vibrational frequencies of the newly discovered superconductors, LiFeAs and NaFeAs, are calculated within density functional theory. We show that, in the vicinity of the Fermi energy, the density of states is dominated by contributions from Fe 3d states. We also calculate the electron-phonon coupling strength and show that it is too weak to account for the observed values of the superconducting transition temperatures. This seems to indicate that the iron-based superconductors are not of the conventional type.http://dx.doi.org/10.1155/2010/804343 |
| spellingShingle | R. A. Jishi H. M. Alyahyaei Electronic and Lattice Dynamical Properties of the Iron-Based Superconductors LiFeAs and NaFeAs Advances in Condensed Matter Physics |
| title | Electronic and Lattice Dynamical Properties of the Iron-Based Superconductors LiFeAs and NaFeAs |
| title_full | Electronic and Lattice Dynamical Properties of the Iron-Based Superconductors LiFeAs and NaFeAs |
| title_fullStr | Electronic and Lattice Dynamical Properties of the Iron-Based Superconductors LiFeAs and NaFeAs |
| title_full_unstemmed | Electronic and Lattice Dynamical Properties of the Iron-Based Superconductors LiFeAs and NaFeAs |
| title_short | Electronic and Lattice Dynamical Properties of the Iron-Based Superconductors LiFeAs and NaFeAs |
| title_sort | electronic and lattice dynamical properties of the iron based superconductors lifeas and nafeas |
| url | http://dx.doi.org/10.1155/2010/804343 |
| work_keys_str_mv | AT rajishi electronicandlatticedynamicalpropertiesoftheironbasedsuperconductorslifeasandnafeas AT hmalyahyaei electronicandlatticedynamicalpropertiesoftheironbasedsuperconductorslifeasandnafeas |