Probing interactions in mesoscopic gold wires
F. Pierre, H. Pothier, D. Esteve, M. H. Devoret, A. B. Gougam, N. O. Birge
Abstract
We have measured in gold wires the energy exchange rate between quasiparticles, the phase coherence time of quasiparticles and the resistance vs. temperature, in order to probe the interaction processes which are relevant at low temperatures. We find that the energy exchange rate is higher than expected from the theory of electron-electron interactions, and that it has a different energy dependence. The dephasing time is constant at temperatures between 8 K and 0.5 K, and it increases below 0.5 K. The magnetoresistance is negative at large field scales, and the resistance decreases logarithmically with increasing temperatures, indicating the presence of magnetic impurities, probably Fe. Whereas resistivity and phase coherence measurements can be attributed to magnetic impurities, the question is raised whether these magnetic impurities could also mediate energy exchanges between quasiparticles.
Create a lesson
Related papers
Dynamical Keldysh model for colored noise and finite relaxation rate
F. Z. Bendjeddou, D. V. Efremov, M. N. Kiselev
When Molecular Dimerization Induces Magnetic Bi-Stability at the Metal-Organic Interface
Rouzhaji Tuerhong, Franck Ngassam, Mebarek Alouani et al.
Anisotropic g-tensor and strong spin-orbit interaction of holes in hexagonal germanium nanowires
Anirban Das, Baksa Kolok, Dániel Varjas et al.
Signature of chiral anomaly in a graphene-based heterostructure
Ivan S. Sokolov, Dmitry V. Averyanov, Oleg E. Parfenov et al.
Nonlinear Interaction and Topological Selection Rules in two Skyrmion Merging: Emergence of Skyrmionium Textures
M. Al Busaidi, T. Hakioglu, R. Sbiaa
Multi-Channel Non-Abelian Edge Pumping via Multi-Degeneracy Encircling
Qingyang Mo, Jiacheng Sun, Zhongfu Li et al.