Deutsch
 
Hilfe Datenschutzhinweis Impressum
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT

Freigegeben

Zeitschriftenartikel

Signature of frustrated moments in quantum critical CePd1-xNixAl

MPG-Autoren
/persons/resource/persons182618

Lucas,  Stefan
Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126865

Stockert,  Oliver
Oliver Stockert, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

Externe Ressourcen
Es sind keine externen Ressourcen hinterlegt
Volltexte (beschränkter Zugriff)
Für Ihren IP-Bereich sind aktuell keine Volltexte freigegeben.
Volltexte (frei zugänglich)
Es sind keine frei zugänglichen Volltexte in PuRe verfügbar
Ergänzendes Material (frei zugänglich)
Es sind keine frei zugänglichen Ergänzenden Materialien verfügbar
Zitation

Sakai, A., Lucas, S., Gegenwart, P., Stockert, O., Loehneysen, H. V., & Fritsch, V. (2016). Signature of frustrated moments in quantum critical CePd1-xNixAl. Physical Review B, 94(22): 220405, pp. 1-5. doi:10.1103/PhysRevB.94.220405.


Zitierlink: https://hdl.handle.net/11858/00-001M-0000-002C-5199-9
Zusammenfassung
CePdAl with Ce 4f moments forming a distorted kagome network is one of the scarce materials exhibiting Kondo physics and magnetic frustration simultaneously. As a result, antiferromagnetic (AF) order setting in at T-N = 2.7 K encompasses only two-thirds of the Ce moments. We report measurements of the specific heat, C, and the magnetic Gruneisen parameter, Gamma(mag), on single crystals of CePd1-xNixAl with x <= 0.16 at temperatures down to 0.05 K and magnetic fields B up to 8 T. Field-induced quantum criticality for various concentrations is observed with the critical field decreasing to zero at x(c) approximate to 0.15. Remarkably, two-dimensional AF quantum criticality of Hertz-Millis-Moriya type arises for x = 0.05 and x = 0.1 at the suppression of three-dimensional magnetic order. Furthermore, Gamma(mag)(B) shows an additional contribution near 2.5 T for all concentrations, which is ascribed to correlations of the frustrated one-third of Ce moments.