Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2011-05-04
Phys. Rev. B 82, 224416 (2010)
Physics
Condensed Matter
Strongly Correlated Electrons
Scientific paper
We investigate the interplay between the Kondo effect and randomness in MxTiSe2 (M = Co, Ni, and Fe) single crystals. Although the typical low-T upturn of resistivity implies the Kondo effect around the single-ion Kondo temperature \overline{T}_{K}, positive magnetoresistance linearly proportional to the magnetic field and the power-law scaling of magnetization suggest the forbidden coexistence between Kondo effect and time reversal symmetry breaking. This puzzling result is resolved by the Griffiths scenario - disorder-induced distribution of the Kondo temperature produces an effective Kondo temperature (\overline{T}_{K}) much lower than \overline{T}_{K}, allowing unscreened local moments above \overline{T}_{K} and resulting in non-Fermi liquid properties in MxTiSe2 below the percolation threshold (x
Kikuchi Takemasa
Kim Heon-Jung
Kim Ki-Seok
Kitaura Mamoru
Ohnishi Akimasa
No associations
LandOfFree
Interplay between the Kondo effect and randomness: Griffiths phase in MxTiSe2 (M = Co, Ni, and Fe) single crystals does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Interplay between the Kondo effect and randomness: Griffiths phase in MxTiSe2 (M = Co, Ni, and Fe) single crystals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Interplay between the Kondo effect and randomness: Griffiths phase in MxTiSe2 (M = Co, Ni, and Fe) single crystals will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-689000