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Thermodynamics of field‐tuned quantum critical point in CeAgSb 2
Author(s) -
Zou Yang,
Logg Peter,
Barber Mark,
Feng Zhuo,
Ebihara Takao,
Grosche F. Malte
Publication year - 2013
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201200926
Subject(s) - magnetic refrigeration , condensed matter physics , intermetallic , quantum critical point , quantum , magnetic field , physics , critical point (mathematics) , lattice (music) , entropy (arrow of time) , materials science , thermodynamics , specific heat , quantum phase transition , magnetization , quantum mechanics , phase transition , mathematics , metallurgy , mathematical analysis , alloy , acoustics
The intermetallic compound CeAgSb 2 is a rare example of a ferromagnetically ordered Kondo lattice system. The transition temperature of 9.6 K in zero field is sensitive to the application of magnetic fields perpendicular to the easy axis. Therefore transverse field tuning could be used as an effective way to investigate quantum critical behaviour. In this work we present combined measurements of the specific heat and the magnetocaloric effect which allows a comprehensive thermodynamical study of the system. The entropy landscape is constructed as a function of temperature and field tuning.