Metamagnetism in CeIrIn5: Magnetoresistance and dHvA investigation

C. Capan, Louisiana State University
R. G. Goodrich, Louisiana State University
J. F. DiTusa, Louisiana State University
L. Balicas, National High Magnetic Field Laboratory
Y. J. Jo, National High Magnetic Field Laboratory
T. P. Murphy, National High Magnetic Field Laboratory
E. C. Palm, National High Magnetic Field Laboratory
R. Movshovich, Los Alamos National Laboratory
E. D. Bauer, Los Alamos National Laboratory
M. F. Hundley, Los Alamos National Laboratory
J. D. Thompson, Los Alamos National Laboratory
J. L. Sarrao, Los Alamos National Laboratory
D. Hall, National High Magnetic Field Laboratory
S. W. Tozer, National High Magnetic Field Laboratory

Abstract

We investigated the magnetoresistance and de-Haas-van-Alphen effect (dHvA) in CeIrIn5 for magnetic fields up to 45 T and in the temperature range 0.03-1 K. A concomitant drop in the resistivity and in the amplitude of the dHvA oscillations mark the onset of the metamagnetic transition at 28 T for field parallel to [0 0 1]. Both features are gradually suppressed when the field is rotated away from [0 0 1]. There is no significant change in the dHvA frequencies and the cyclotron effective masses, at odds with other known metamagnetic systems. © 2007.