Quantum order-by-disorder driven phase reconstruction in the vicinity of ferromagnetic quantum critical points
MetadataShow full item record
The formation of new phases close to itinerant electron quantum critical points has been observed experimentally in many compounds. We present a unified analytical model that explains 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 towards the formation of spiral and d-wave spin nematic phases close to itinerant ferromagnetic quantum critical points in three spatial dimensions.
Karahasanovic , U , Kruger , F & Green , A 2012 , ' Quantum order-by-disorder driven phase reconstruction in the vicinity of ferromagnetic quantum critical points ' Physical Review. B, Condensed matter and materials physics , vol. 85 , no. 16 , 165111 . DOI: 10.1103/PhysRevB.85.165111
Physical Review. B, Condensed matter and materials physics
© 2012 American Physical Society
DescriptionThis work was supported by EPSRC under Grant No. EP/I 004831/1.
Items in the St Andrews Research Repository are protected by copyright, with all rights reserved, unless otherwise indicated.