de.mpg.escidoc.pubman.appbase.FacesBean
English
 
Help Guide Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Avoided ferromagnetic quantum critical point in CeRuPO

MPS-Authors
http://pubman.mpdl.mpg.de/cone/persons/resource/persons126728

Lengyel,  E.
Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons126743

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

http://pubman.mpdl.mpg.de/cone/persons/resource/persons126710

Krellner,  C.
Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons126614

Geibel,  C.
Christoph Geibel, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons126782

Nicklas,  M.
Michael Nicklas, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

Locator
There are no locators available
Fulltext (public)
There are no public fulltexts available
Supplementary Material (public)
There is no public supplementary material available
Citation

Lengyel, E., Macovei, M. E., Jesche, A., Krellner, C., Geibel, C., & Nicklas, M. (2015). Avoided ferromagnetic quantum critical point in CeRuPO. Physical Review B, 91(3): 035130, pp. 1-11. doi:10.1103/PhysRevB.91.035130.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0025-AFD1-D
Abstract
CeRuPO is a rare example of a ferromagnetic (FM) Kondo-lattice system. External pressure suppresses the ordering temperature to zero at about p(c) approximate to 3 GPa. Our ac-susceptibility and electrical-resistivity investigations evidence that the type of magnetic ordering changes from FM to antiferromagnetic (AFM) at about p* approximate to 0.87 GPa. Studies in applied magnetic fields suggest that ferromagnetic and antiferromagnetic correlations compete for the ground state at p > p*, but finally the AFM correlations win. The change in the magnetic ground-state properties is closely related to the pressure evolution of the crystalline-electric-field level scheme and the magnetic Ruderman-Kittel-Kasuya-Yosida exchange interaction. The Neel temperature disappears abruptly in a first-order-like fashion at p(c), hinting at the absence of a quantum critical point. This is consistent with the low-temperature transport properties exhibiting Landau-Fermi-liquid behavior in the whole investigated pressure range up to 7.5 GPa.