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Quantum order-by-disorder near criticality and the secret of partial order in MnSi
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dc.contributor.author | Kruger, Frank | |
dc.contributor.author | Karahasanovic, Una | |
dc.contributor.author | Green, Andrew G. | |
dc.date.accessioned | 2014-06-06T09:31:00Z | |
dc.date.available | 2014-06-06T09:31:00Z | |
dc.date.issued | 2012-02-08 | |
dc.identifier.citation | Kruger , F , Karahasanovic , U & Green , A G 2012 , ' Quantum order-by-disorder near criticality and the secret of partial order in MnSi ' , Physical Review Letters , vol. 108 , no. 6 , 067003 . https://doi.org/10.1103/PhysRevLett.108.067003 | en |
dc.identifier.issn | 0031-9007 | |
dc.identifier.other | PURE: 15869803 | |
dc.identifier.other | PURE UUID: 5151ac07-68e5-4e7d-8a60-13e49b87e55f | |
dc.identifier.other | ArXiv: http://arxiv.org/abs/1111.3957v1 | |
dc.identifier.other | Scopus: 84856845719 | |
dc.identifier.uri | https://hdl.handle.net/10023/4860 | |
dc.description.abstract | The vicinity of quantum phase transitions has proven fertile ground in the search for new quantum phases. We propose a physically motivated and unifying description of phase reconstruction near metallic quantum-critical points using the idea of quantum order-by-disorder. Certain deformations of the Fermi surface associated with the onset of competing order enhance the phase space available for low-energy, particle-hole fluctuations and self-consistently lower the free energy. Applying the notion of quantum order-by-disorder to the itinerant helimagnet MnSi, we show that near to the quantum critical point, fluctuations lead to an increase of the spiral ordering wave vector and a reorientation away from the lattice favored directions. The magnetic ordering pattern in this fluctuation-driven phase is found to be in excellent agreement with the neutron scattering data in the partially ordered phase of MnSi. | |
dc.format.extent | 5 | |
dc.language.iso | eng | |
dc.relation.ispartof | Physical Review Letters | en |
dc.rights | © 2012 American Physical Society | en |
dc.subject | cond-mat.str-el | en |
dc.subject | QC Physics | en |
dc.subject.lcc | QC | en |
dc.title | Quantum order-by-disorder near criticality and the secret of partial order in MnSi | en |
dc.type | Journal article | en |
dc.contributor.sponsor | EPSRC | en |
dc.contributor.sponsor | EPSRC | en |
dc.contributor.sponsor | EPSRC | en |
dc.description.version | Publisher PDF | en |
dc.contributor.institution | University of St Andrews. School of Physics and Astronomy | en |
dc.identifier.doi | https://doi.org/10.1103/PhysRevLett.108.067003 | |
dc.description.status | Peer reviewed | en |
dc.identifier.grantnumber | EP/H049584/1 | en |
dc.identifier.grantnumber | EP/I031014/1 | en |
dc.identifier.grantnumber | EP/I004831/1 | en |
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