% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@ARTICLE{Chang:22702,
      author       = {Chang, L.-J. and Onoda, S. and Su, Y. and Kao, Y.-J. and
                      Tsuei, K.-D. and Yasui, Y. and Kakurai, K. and Lees, M.R.},
      title        = {{H}iggs transition from a manetic {C}oulomb liquid to a
                      ferromagnet in {Y}b2{T}i2{O}7},
      journal      = {Nature Communications},
      volume       = {3},
      number       = {Article number: 992},
      issn         = {2041-1723},
      address      = {London},
      publisher    = {Nature Publishing Group},
      reportid     = {PreJuSER-22702},
      year         = {2012},
      note         = {We thank J.S. Gardner, B.D. Gaulin and A. Yaouanc for
                      discussions. We thank Harald Schneider for technical
                      supports in the neutron scattering experiments. We
                      acknowledge Chih-Wen Pao and other staff of BL07A of the
                      NSRRC who helped perform the EXAFS measurements. This work
                      is partially supported by National Science Council, Taiwan,
                      under grants no. NSC 96-2739-M-213-001, NSC 99-2112M-007-020
                      (L.J.C.), NSC 100-2112-M-002-013-MY3, NSC-99-2120-M-002-005
                      (Y.J.K.), by NTU under grant no. 10R80909-4 (Y.J.K.), and by
                      grants-in-aid for Scientific Research under grant no.
                      21740275 and no. 24740253 from Japan Society for the
                      Promotion of Science (S.O.) and under grant no. 19052006
                      (S.O.) and no. 19052004 (K.K.) from the Ministry of
                      Education, Culture, Sports, Science and Technology, Japan.},
      abstract     = {In a class of frustrated magnets known as spin ice,
                      magnetic monopoles emerge as classical defects and interact
                      via the magnetic Coulomb law. With quantum-mechanical
                      interactions, these magnetic charges are carried by
                      fractionalized bosonic quasi-particles, spinons, which can
                      undergo Bose-Einstein condensation through a first-order
                      transition via the Higgs mechanism. Here, we report evidence
                      of a Higgs transition from a magnetic Coulomb liquid to a
                      ferromagnet in single-crystal Yb(2)Ti(2)O(7). Polarized
                      neutron scattering experiments show that the diffuse
                      [111]-rod scattering and pinch-point features, which develop
                      on cooling are suddenly suppressed below T(C)~0.21 K, where
                      magnetic Bragg peaks and a full depolarization of the
                      neutron spins are observed with thermal hysteresis,
                      indicating a first-order ferromagnetic transition. Our
                      results are explained on the basis of a quantum spin-ice
                      model, whose high-temperature phase is effectively described
                      as a magnetic Coulomb liquid, whereas the ground state shows
                      a nearly collinear ferromagnetism with gapped spin
                      excitations.},
      keywords     = {J (WoSType)},
      cin          = {PGI-4 / JCNS (München) ; Jülich Centre for Neutron
                      Science JCNS (München) ; JCNS-FRM-II / JCNS-2},
      ddc          = {500},
      cid          = {I:(DE-Juel1)PGI-4-20110106 /
                      I:(DE-Juel1)JCNS-FRM-II-20110218 /
                      I:(DE-Juel1)JCNS-2-20110106},
      pnm          = {Grundlagen für zukünftige Informationstechnologien},
      pid          = {G:(DE-Juel1)FUEK412},
      experiment   = {EXP:(DE-MLZ)DNS-20140101},
      shelfmark    = {Multidisciplinary Sciences},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:22871811},
      pmc          = {pmc:PMC3432460},
      UT           = {WOS:000308801100008},
      doi          = {10.1038/ncomms1989},
      url          = {https://juser.fz-juelich.de/record/22702},
}