English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Low-field behavior of an XY pyrochlore antiferromagnet: Emergent clock anisotropies

MPS-Authors
/persons/resource/persons145694

Moessner,  R.
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available
Citation

Maryasin, V. S., Zhitomirsky, M. E., & Moessner, R. (2016). Low-field behavior of an XY pyrochlore antiferromagnet: Emergent clock anisotropies. Physical Review B, 93(10): 100406. doi:10.1103/PhysRevB.93.100406.


Cite as: https://hdl.handle.net/11858/00-001M-0000-002A-3D91-1
Abstract
Using Er2Ti2O7 as motivation, we investigate finite-field properties of XY pyrochlore antiferromagnets. In addition to a fluctuation-induced six-fold anisotropy present in zero field, an external magnetic field induces a combination of two-, three-, and six-fold clock terms as a function of its orientation, providing for rich and controllable magnetothermodynamics. For Er2Ti2O7, we predict a phase transition in a weak magnetic field H vertical bar vertical bar [001]. Re-entrant transitions are also found for H vertical bar vertical bar [111]. We extend these results to the whole family the XY pyrochlore antiferromagnets and show that presence and number of low-field transitions for different orientations can be used for locating a given material in the parameter space of anisotropic pyrochlores. Finite-temperature classical Monte Carlo simulations serve to confirm and illustrate these analytic predictions.