Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2007-09-23
Physics
Condensed Matter
Strongly Correlated Electrons
2 pages, 2 figures, conference
Scientific paper
10.1016/j.physb.2007.10.254
Torque and magnetization measurements in magnetic fields $H$ up to 14 T were performed on CeCoIn$_5$ single crystals. The amplitude of the paramagnetic torque shows an $H^{2.3}$ dependence in the mixed state and an $H^{2}$ dependence in the normal state. In addition, the mixed-state magnetizations for both $H\parallel c$ and $H\parallel ab$ axes show anomalous behavior after the subtraction of the corresponding paramagnetic contributions as linear extrapolations of the normal-state magnetization. These experimental results point towards a nonlinear paramagnetic magnetization in the mixed state of CeCoIn$_5$, which is a result of the fact that both orbital and Pauli limiting effects dominate in the mixed state.
Almasan C. C.
Hu Tao
Maple Brian M.
Sayles T. A.
Xiao Hongda
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