Multiband Semimetallic Electronic Structure of Superconducting Ta2PdSe5.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 25909894.
- Also identified by DOI 10.1371/journal.pone.0123667 and PMC identifier 4409351.
- Licence recorded as CC BY.
- The licence permits redistribution, so the abstract is shown in full and the full text is available from the publisher.
Abstract
We report the electronic structure and related properties of the superconductor Ta2PdSe5 as determined from density functional calculations. The Fermi surface has two disconnected sheets, both derived from bands of primarily chalcogenide p states. These are a corrugated hole cylinder and a heavier complex shaped electron sheet. The sheets contain 0.048 holes and a compensating number of electrons per formula unit, making the material a semimetallic superconductor. The results support the presence of two band superconductivity, although a discrepancy in the specific heat is noted. This discrepancy is discussed as a possible consequence of Pd deficiency in samples.
Medical subject headings
- Electric Conductivity
- Models, Theoretical