1997
DOI: 10.1016/s0921-4526(97)81583-9 View full text |Buy / Rent full text
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Abstract: We investigate the phase transition of URu2Si 2 at To = 17.5 K by thermal expansion and heat capacity in magnetic fields, H, up to 25 T. At To an energy gap of A ~-115 K opens, which decreases to 65 K in 25 T. The H dependence of To scales with A, whereas a different H dependence and energy scale was observed for the ordered dipole moment. The anomalous H dependence of the thermal expansion coefficients may discriminate between the various scenarios for the primary order parameter of URu2Si2.

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