Field-induced quantum criticality in YbAgGe

TitleField-induced quantum criticality in YbAgGe
Publication TypeJournal Article
Year of Publication2008
AuthorsBud'ko SL, Canfield PC
Journal TitlePhysica B-Condensed Matter
Date PublishedApr
Type of ArticleProceedings Paper
ISBN Number0921-4526
Accession NumberISI:000254689900183
KeywordsHEAVY-FERMION YBAGGE, magnetic field, phase-diagram, quantum critical point, YbAgGe

YbAgGe is one of the very few stoichiometric, Yb-based, heavy fermion materials that exhibit field-induced quantum criticality. We will present an overview of thermodynamic and transport measurements in YbAgGe single crystals. Moderate magnetic field (45-90 kOe, depending on orientation) suppresses long range magnetic order, giving rise to non-Fermi-liquid behavior followed at higher field by a crossover to a heavy Fermi-liquid. Given the more accessible temperature and field scales, a non-Fermi liquid region rather than point for T -> 0K may be detected. (C) 2007 Elsevier B.V. All rights reserved.

Alternate JournalPhysica B