6533b7d1fe1ef96bd125bad6
RESEARCH PRODUCT
Universal low-temperature behavior of the CePd_{1-x}Rh_x ferromagnet
Vladimir A. StephanovichV. R. ShaginyanKonstantin G. Popovsubject
PhysicsQuantum phase transitionCondensed matter physicsStrongly Correlated Electrons (cond-mat.str-el)CondensationGeneral Physics and AstronomyFOS: Physical sciencesFermionCondensed Matter - Strongly Correlated ElectronsFerromagnetismQuantum critical pointQuasiparticleAntiferromagnetismCondensed Matter::Strongly Correlated ElectronsQuantumdescription
The heavy-fermion metal CePd_{1-x}Rh_x evolves from ferromagnetism at x=0 to a non-magnetic state at some critical concentration x_c. Utilizing the quasiparticle picture and the concept of fermion condensation quantum phase transition (FCQPT), we address the question about non-Fermi liquid (NFL) behavior of ferromagnet CePd_{1-x}Rh_x and show that it coincides with that of both antiferromagnet YbRh_2(Si_{0.95}Ge_{0.05})_2 and paramagnet CeRu_2Si_2 and CeNi_2Ge_2. We conclude that the NFL behavior being independent of the peculiarities of specific alloy, is universal, while numerous quantum critical points assumed to be responsible for the NFL behavior of different HF metals can be well reduced to the only quantum critical point related to FCQPT.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2007-06-05 |