Spin-glass phase transition revealed in transport measurements - Université de Lyon
Journal Articles Physical Review B Year : 2020

Spin-glass phase transition revealed in transport measurements

Abstract

We have measured the resistivity of magnetically doped Ag:Mn mesoscopic wires as a function of temperature and magnetic field. The doping has been made using ion implantation, allowing a distribution of the dopants in the middle of the sample. Comparison with an undoped sample, used as a reference sample, shows that the resistivity of the doped sample exhibits nonmonotonic behavior as a function of both magnetic field and temperature, revealing the competition between the Kondo effect and the RKKY interactions between spins. This proves that transport measurements are still a reliable probe of the spin-glass transition in nanoscopic metallic wire doped using implantation.
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Dates and versions

hal-03087819 , version 1 (09-09-2024)

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Guillaume Forestier, Mathias Solana, Cécile Naud, Andreas Wieck, François Lefloch, et al.. Spin-glass phase transition revealed in transport measurements. Physical Review B, 2020, 102 (2), pp.024206. ⟨10.1103/PhysRevB.102.024206⟩. ⟨hal-03087819⟩
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