Journal
APPLIED PHYSICS LETTERS
Volume 103, Issue 4, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4816381
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Funding
- Office of Basic Energy Sciences, Material Science Division of the U.S. Department of Energy [DE-FG02-06ER46291, DE-FG02-13ER46946]
- U.S. DOE [DE-FG02-07ER46420]
- U.S. Department of Energy (DOE) [DE-FG02-07ER46420] Funding Source: U.S. Department of Energy (DOE)
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An unusually large Kadowaki-Woods ratio of A/gamma(2) similar to 43 mu Omega.cm.mol(2).K-2.J(-2) has been observed for intermetallic Mn1-xFexCoGe compounds in the proximity of x = 0.2 where the magnetic state of itinerant electrons system changes. The ratio is approximately four times larger than observed for heavy fermion systems. The manifestation of the strong electron correlations can be realized from the anisotropic origin of the effect through the substantial reduction of interlayer transport of heavy quasiparticles with comparable mean-free path and interlayer spacing in the proximity of a noncollinear ferromagnetic state associated with a large density of states at the Fermi level. (C) 2013 AIP Publishing LLC.
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