Journal
PHYSICAL REVIEW LETTERS
Volume 107, Issue 8, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.107.087201
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Funding
- Engineering and Physical Sciences Research Council (EPSRC) of the U.K.
- EPSRC [EP/G007489/2, EP/F032773/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/G007489/2, EP/F032773/1] Funding Source: researchfish
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First-principles density-functional-theory calculations show that compression of alkali metals stabilizes open structures with localized interstitial electrons which may exhibit a Stoner-type instability towards ferromagnetism. We find ferromagnetic phases of the lithium-IV-type, simple cubic, and simple hexagonal structures in the heavier alkali metals, which may be described as s-band ferromagnets. We predict that the most stable phases of potassium at low temperatures and pressures around 20 GPa are ferromagnets.
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