Journal
PHYSICAL REVIEW B
Volume 85, Issue 16, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.85.165111
Keywords
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Funding
- EPSRC [EP/I 004831/1]
- Engineering and Physical Sciences Research Council [EP/H049584/1, EP/I004831/2, EP/I004831/1, EP/I031014/1] Funding Source: researchfish
- EPSRC [EP/H049584/1, EP/I031014/1, EP/I004831/2, EP/I004831/1] Funding Source: UKRI
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The formation of new phases close to itinerant electron quantum critical points has been observed experimentally in many compounds. We present a unified analytical framework to explain the emergence of new types of order around itinerant ferromagnetic quantum critical points. The central idea of our analysis is that certain Fermi-surface deformations associated with the onset of the competing order enhance the phase space available for low-energy quantum fluctuations and so, self-consistently lower the free energy. We demonstrate that this quantum order-by-disorder mechanism leads to instabilities toward the formation of spiral and d-wave spin-nematic phases close to itinerant ferromagnetic quantum critical points in three spatial dimensions.
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