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Anomalous charge transport in RB 12 (R = Ho, Er, Tm, Lu)
Author(s) -
Sluchanko N.,
Bogomolov L.,
Glushkov V.,
Demishev S.,
Ignatov M.,
Khayrullin Eu.,
Samarin N.,
Sluchanko D.,
Levchenko A.,
Shitsevalova N.,
Flachbart K.
Publication year - 2006
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200642197
Subject(s) - antiferromagnetism , charge (physics) , condensed matter physics , rare earth , charge ordering , charge carrier , spin (aerodynamics) , hall effect , materials science , chemistry , analytical chemistry (journal) , electrical resistivity and conductivity , physics , mineralogy , thermodynamics , chromatography , quantum mechanics
Abstract High precision measurements of Hall R H ( T ) and Seebeck S ( T ) coefficients have been carried out for the first time on single crystals of rare earth dodecaborides RB 12 (R = Ho, Er, Tm, Lu) at temperatures 1.8–300 K. Low temperature anomalies detected on the temperature dependencies of R H ( T ) and S ( T ) are associated with antiferromagnetic phase transitions in HoB 12 , ErB 12 and TmB 12 compounds. The observed discrepancy between the change of charge carriers' mobility and de‐Gennes factor ( g – 1) 2 J ( J + 1) ( J – angular momentum of the 4f shell) in the set of HoB 12 –TmB 12 allows us to conclude about the appreciable influence of spin fluctuations on the charge transport in these compounds with B 12 atomic clusters. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)