Exotic ground state and elastic softening under pulsed magnetic fields in PrTr2Zn20 (Tr = Rh, Ir)
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Contributors
Abstract
To investigate a field-induced level crossing of the ground-state doublet in PrTr2Zn20 (Tr = Rh, Ir), we performed ultrasonic measurements in pulsed magnetic fields applied along the [110] and [001] directions and analyzed the results in the framework of the strain-susceptibility approach. Above 40 T for H || [110], we observed an elastic softening of the transverse modulus (C11 C12)/2 corresponding to the ground-state doublet. In both compounds the softening is followed by a minimum at about 47 T at low temperatures. We predict the presence of a new field-induced phase boundary in PrTr2Zn20 at this field with two possible cases. The magnetic field of the minimum cannot be explained by only the quadrupole interaction.
Details
Original language | English |
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Article number | 043601 |
Journal | Journal of the Physical Society of Japan |
Volume | 85 |
Issue number | 4 |
Publication status | Published - 15 Apr 2016 |
Peer-reviewed | Yes |