Field-Induced Magnetostructural Transitions in Antiferromagnetic Fe1+yTe1-xSx
Masashi Tokunaga, Takumi Kihara, Yoshikazu Mizuguchi, Yoshihiko Takano
TL;DR
This study investigates how high magnetic fields influence the structural and magnetic properties of Fe1+yTe1-xSx crystals, revealing magnetoelastic coupling as key to their antiferromagnetic order.
Contribution
It provides new insights into the magnetostructural transitions and the role of magnetoelastic coupling in iron chalcogenides under high magnetic fields.
Findings
Positive magnetoresistance with hysteresis observed
Structural transitions occur simultaneously with magnetic changes
Magnetoelastic coupling drives magnetic order
Abstract
The transport and structural properties of Fe1+yTe1-xSx (x=0, 0.05, and 0.10) crystals were studied in pulsed magnetic fields up to 65 T. The application of high magnetic fields results in positive magnetoresistance effect with prominent hystereses in the antiferromagnetic state. Polarizing microscope images obtained at high magnetic fields showed simultaneous occurrence of structural transitions. These results indicate that magnetoelastic coupling is the origin of the bicollinear magnetic order in iron chalcogenides.
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