Kavli Affiliate: Long Zhang
| First 5 Authors: Xiao-Tian Zhang, Yuya Ominato, Long Zhang, Mamoru Matsuo,
| Summary:
We propose that the spin pumping effect is a valuable probe to non-Fermi
liquid (NFL) metals in correlated electron systems. In a bilayer structure
composed of a NFL metal and a ferromagnetic insulator subjected to ac magnetic
field, the precessing spins in the FI inject spin current into the NFL metal,
which modulates the ferromagnetic resonance (FMR) as a backaction. For NFL
metals in the vicinity of a quantum critical point, the FMR modulation shows
power-law scaling with the frequency and the temperature, which is closely
related to the quantum critical behavior and reflects the non-quasiparticle
nature of spin relaxation in NFL metals.
| Search Query: ArXiv Query: search_query=au:”Long Zhang”&id_list=&start=0&max_results=3