AI Article Synopsis
- Using a relativistic method, researchers examined the energy band structures and Fermi surfaces of the plutonium superconductor PuCoGa5 and the similar material NpCoGa5.
- They found that PuCoGa5 has large, cylindrical Fermi surface sheets akin to those in CeMIn5, whereas NpCoGa5's Fermi surfaces resemble those in UMGa5.
- The study suggests that these similarities offer insights into potential superconducting mechanisms in certain f-electron compounds like HoCoGa5.
Article Abstract
Using a relativistic linear augmented-plane-wave method, we clarify energy band structures and Fermi surfaces of recently discovered plutonium-based superconductor PuCoGa5 and the isostructural material NpCoGa5. For PuCoGa5, we find several cylindrical sheets of Fermi surfaces with large volume, similar to CeMIn5, while for NpCoGa5, the Fermi surfaces are found to be similar to those of UMGa5. These similarities are discussed based on the j-j coupling scheme, suggesting some hints for the superconducting mechanism in HoCoGa5-type f-electron compounds.
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| http://dx.doi.org/10.1103/PhysRevLett.90.207007 | DOI Listing |
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