Magnetoelastic coupling and phases in the skyrmion lattice magnet Gd2PdSi3 discovered by high-resolution dilatometry
We report detailed thermodynamic studies on high-quality single crystals of the centrosymmetric skyrmion-hosting intermetallic Gd2PdSi3 by means of high-resolution capacitance dilatometry in fields up to 15 T which are complemented by specific heat and magnetization studies. Our dilatometric measure...
Gespeichert in:
| Hauptverfasser: | , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
21 May 2021
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| In: |
Physical review
Year: 2021, Jahrgang: 103, Heft: 18, Pages: 1-9 |
| ISSN: | 2469-9969 |
| DOI: | 10.1103/PhysRevB.103.184424 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevB.103.184424 Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevB.103.184424 
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| Verfasserangaben: | S. Spachmann, A. Elghandour, M. Frontzek, W. Löser, and R. Klingeler |
MARC
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| 245 | 1 | 0 | |a Magnetoelastic coupling and phases in the skyrmion lattice magnet Gd2PdSi3 discovered by high-resolution dilatometry |c S. Spachmann, A. Elghandour, M. Frontzek, W. Löser, and R. Klingeler |
| 246 | 3 | 3 | |a Magnetoelastic coupling and phases in the skyrmion lattice magnet Gd 2PdSi 3 discovered by high-resolution dilatometry |
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| 520 | |a We report detailed thermodynamic studies on high-quality single crystals of the centrosymmetric skyrmion-hosting intermetallic Gd2PdSi3 by means of high-resolution capacitance dilatometry in fields up to 15 T which are complemented by specific heat and magnetization studies. Our dilatometric measurements show magnetoelastic effects associated with antiferromagnetic order at TN1=22.3 K and TN2=19.7 K, as well as strong field effects in an applied magnetic field of 15 T up to 200 K (150 K) for B∥c (B∥a*, i.e., B⊥c). The data allow us to complete the magnetic phase diagram, including a feature at T∗≈13K below which an additional degree of freedom becomes relevant. The magnetic B vs T phase diagram for the a* axis is also reported. Grüneisen analysis shows the onset of magnetic contributions around 60 K, i.e., well above TN1. Uniaxial pressure dependencies of opposite signs, −1.3 and 0.3 K/GPa, are extracted for the out-of-plane and in-plane directions at TN1. For T∗ we obtain ∂T∗/∂pc=1.4 K/GPa. In particular we elucidate thermodynamic properties of the recently discovered skyrmion lattice phase and show that it is strongly enhanced by uniaxial pressure. | ||
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