Abstract
AbstractThe Kondo effect offers an important paradigm to understand strongly correlated many-body physics. Although under intensive study, some of the important properties of the Kondo effect, in systems where both itinerant coupling and localized coupling play significant roles, are still elusive. Here we report the evolution and universality of the two-stage Kondo effect, the simplest form where both couplings are important using single molecule transistor devices incorporating Manganese phthalocyanine molecules. The Kondo temperature T* of the two-stage Kondo effect evolves linearly against effective interaction of involved two spins. Observed Kondo resonance shows universal quadratic dependence with all adjustable parameters: temperature, magnetic field and biased voltages. The difference in nonequilibrium conductance of two-stage Kondo effect to spin 1/2 Kondo effect is also identified. Messages learned in this study fill in directive experimental evidence of the evolution of two-stage Kondo resonance near a quantum phase transition point, and help in understanding sophisticated molecular electron spectroscopy in a strong correlation regime.
Publisher
Springer Science and Business Media LLC
Subject
General Physics and Astronomy,General Biochemistry, Genetics and Molecular Biology,General Chemistry
Reference41 articles.
1. Kondo, J. Resistance minimum in dilute magnetic alloys. Prog. Theor. Phys. 32, 37 (1964).
2. Pruschke, T., Jarrell, M. & Freericks, J. K. Anomalous normal-state properties of high-Tc superconductors: intrinsic properties of strongly correlated electron systems? Adv. Phys. 44, 187–210 (1995).
3. Gruner, G. & Zawadowski, A. Magnetic-impurities in non-magnetic metals. Rep. Prog. Phys. 37, 1497–1583 (1974).
4. Gomilšek, M. et al. Kondo screening in a charge-insulating spinon metal. Nat. Phys. 15, 754–758 (2019).
5. Ikeda, M. S. et al. Kondo-like phonon scattering in thermoelectric clathrates. Nat. Commun. 10, 887 (2019).
Cited by
20 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献