% 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{Kulbakov:890315,
      author       = {Kulbakov, A. A. and Sarkar, R. and Janson, O. and Dengre,
                      S. and Weinhold, T. and Moshkina, E. M. and Portnichenko, P.
                      Y. and Luetkens, H. and Yokaichiya, F. and Sukhanov, A. S.
                      and Eremina, R. M. and Schlender, Ph. and Schneidewind, A.
                      and Klauss, H.-H. and Inosov, D. S.},
      title        = {{D}estruction of long-range magnetic order in an external
                      magnetic field and the associated spin dynamics in {C}u 2
                      {G}a{BO} 5 and {C}u 2 {A}l{BO} 5 ludwigites},
      journal      = {Physical review / B},
      volume       = {103},
      number       = {2},
      issn         = {2469-9950},
      address      = {Woodbury, NY},
      publisher    = {Inst.},
      reportid     = {FZJ-2021-00888},
      pages        = {024447},
      year         = {2021},
      abstract     = {The quantum spin systems Cu2MBO5 (M = Al, Ga) with the
                      ludwigite crystal structure consist of astructurally ordered
                      Cu2+ sublattice in the form of three-leg ladders,
                      interpenetrated by a structurally disorderedsublattice with
                      a statistically random site occupation by magnetic Cu2+ and
                      nonmagnetic Ga3+ or Al3+ ions. Amicroscopic analysis based
                      on density-functional-theory calculations for Cu2GaBO5
                      reveals a frustrated quasitwo-dimensional spin model
                      featuring five inequivalent antiferromagnetic exchanges. A
                      broad low-temperature11B nuclear magnetic resonance points
                      to a considerable spin disorder in the system. In zero
                      magnetic field,antiferromagnetic order sets in below TN ≈
                      4.1 K and ∼2.4 K for the Ga and Al compounds,
                      respectively. Fromneutron diffraction, we find that the
                      magnetic propagation vector in Cu2GaBO5 is commensurate and
                      lies on theBrillouin-zone boundary in the (H0L) plane, qm =
                      (0.45, 0, −0.7), corresponding to a complex
                      noncollinearlong-range ordered structure with a large
                      magnetic unit cell. Muon spin relaxation is monotonic,
                      consisting of afast static component typical for complex
                      noncollinear spin systems and a slow dynamic component
                      originatingfrom the relaxation on low-energy spin
                      fluctuations. Gapless spin dynamics in the form of a diffuse
                      quasielasticpeak is also evidenced by inelastic neutron
                      scattering. Most remarkably, application of a magnetic field
                      above1 T destroys the static long-range order, which is
                      manifested in the gradual broadening of the magnetic
                      Braggpeaks. We argue that such a crossover from a
                      magnetically long-range ordered state to a spin-glass regime
                      mayresult from orphan spins on the structurally disordered
                      magnetic sublattice, which are polarized in magnetic
                      fieldand thus act as a tuning knob for field-controlled
                      magnetic disorder.},
      cin          = {JCNS-FRM-II / MLZ / JCNS-2 / JCNS-4},
      ddc          = {530},
      cid          = {I:(DE-Juel1)JCNS-FRM-II-20110218 / I:(DE-588b)4597118-3 /
                      I:(DE-Juel1)JCNS-2-20110106 / I:(DE-Juel1)JCNS-4-20201012},
      pnm          = {632 - Materials – Quantum, Complex and Functional
                      Materials (POF4-632) / 6G4 - Jülich Centre for Neutron
                      Research (JCNS) (FZJ) (POF4-6G4)},
      pid          = {G:(DE-HGF)POF4-632 / G:(DE-HGF)POF4-6G4},
      experiment   = {EXP:(DE-MLZ)PANDA-20140101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000612211100003},
      doi          = {10.1103/PhysRevB.103.024447},
      url          = {https://juser.fz-juelich.de/record/890315},
}