Quantum oscillations in the parent pnictide BaFe2As2: Itinerant electrons in the reconstructed state
James G. Analytis, Ross D. McDonald, Jiun-Haw Chu, Scott C. Riggs, Alimamy F. Bangura, Chris Kucharczyk, Michelle Johannes, I. R. Fisher
DOI 10.1103/PhysRevB.80.064507 · Physical Review B
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Abstract
We report quantum-oscillation measurements that enable the direct observation of the Fermi surface of the low-temperature ground state of BaFe2As2. From these measurements we characterize the low-energy excitations, revealing that the Fermi surface is reconstructed in the antiferromagnetic state, but leaving itinerant electrons in its wake. The present measurements are consistent with a conventional band folding picture of the antiferromagnetic ground state, placing important limits on the topology and size of the Fermi surface.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| BaFe2As2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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