English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Field-induced staggered moment stabilization in frustrated quantum magnets

MPS-Authors
/persons/resource/persons126833

Schmidt,  B.
Burkhard Schmidt, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126850

Siahatgar,  M.
Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126879

Thalmeier,  P.
Peter Thalmeier, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

External Ressource
No external resources are shared
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available
Citation

Schmidt, B., Siahatgar, M., & Thalmeier, P. (2013). Field-induced staggered moment stabilization in frustrated quantum magnets. Journal of the Korean Physical Society, 62(10), 1499-1503. doi:10.3938/jkps.62.1499.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0015-1EBA-F
Abstract
For low-dimensional frustrated quantum magnets, the dependence of the staggered moment on a magnetic field is nonmonotonic: For small and intermediate fields, quantum fluctuations are gradually suppressed, leading to an increase of the staggered moment as a function of the field strength. For large applied magnetic fields, the classically expected field dependence is recovered, namely a monotonous decrease with increasing field strength. The staggered moment is eventually suppressed when reaching the fully polarized state at the saturation field. The quantitative analysis of this behavior is an excellent tool to determine the frustration parameter of a magnetic compound. We have developed a general finite-size scaling scheme for numerical exact-diagonalization data of low-dimensional frustrated magnets, which we apply to the recently measured field dependence of the magnetic neutron scattering intensity of Cu(pz)(2)(ClO4)(2) in the framework of the S = 1/2 two-dimensional (2D) J (1)-J (2) Heisenberg model. We also apply linear spin-wave theory to complement our numerical findings. Our results show that Cu(pz)(2)(ClO4)(2) is a quasi-2D antiferromagnet with intermediate frustration J (2)/J (1) = 0.2.