Magnetic-field tuning of the low-temperature state of YbNiSi3

TitleMagnetic-field tuning of the low-temperature state of YbNiSi3
Publication TypeJournal Article
Year of Publication2007
AuthorsBud'ko SL, Canfield PC, Avila MA, Takabatake T
Journal TitlePhysical Review B
Volume75
Pages094433
Date PublishedMar
Type of ArticleArticle
ISBN Number1098-0121
Accession NumberISI:000245328500071
KeywordsHEAVY, QUANTUM CRITICALITY
Abstract

We present detailed data from low-temperature magnetization, magnetoresistance, and specific heat measurements on single-crystal YbNiSi3 with the magnetic field applied along the easy magnetic axis, H parallel to b. An initially antiferromagnetic ground state changes into a field-stabilized metamagnetic phase at similar to 16 kOe (T -> 0). On further increase of the magnetic field, magnetic order is suppressed at similar to 85 kOe. No non-Fermi-liquid-like power law was observed in the resistivity in the vicinity of the critical field for T >= 0.4 K. Heat capacity measurements suggest that the applied magnetic field splits the nearly degenerate crystal-electric-field levels that form the zero-field ground state of YbNiSi3. The functional behaviors of the resistivity and specific heat are discussed in comparison with those of the few other stoichiometric heavy fermion compounds with established field-induced quantum critical points.

DOI10.1103/PhysRevB.75.094433
Alternate JournalPhys. Rev. B