Effect of spin fluctuations on the resistivity of LaCrGe{sub 3}
- Low Temperature Laboratory, UGC-DAE Consortium for Scientific Research, University Campus, Khandwa road, Indore-452001 (India)
Resistivity of LaCrGe{sub 3} at low temperatures and high magnetic fields is reported for fields upto 12 T. Spin fluctuations play an important role in this compound whose T{sub C} is 90 K. The normal state above T{sub C} is anomalous in the sense that a T{sup 1/2} term is to be added to the normal phonon contribution [ρ=ρ{sub 0}+aT+bT{sup 1/2}] to get a good fit, whose origin is debatable. Magnetoresistance (MR) vs. applied field H in PM region confirms the presence of strong spin fluctuations in this material. Effect of magnetic field on resistivity shows marked deviation below 170 K. Suppression of resistivity in field up to 12 T near T{sub C} is observed. A negative magnetoresistance (MR) is seen and is consistent with the ferromagnetic behavior. The resistivity data fitted below 80 K could be fitted with an equation ρ(H,T) = ρ{sub 0}(H) + B(H)*T{sup n} where n varies between 2.3 − 2.4, closed to n=2, signifying the presence of possible spin fluctuation.
- OSTI ID:
- 22608802
- Journal Information:
- AIP Conference Proceedings, Vol. 1731, Issue 1; Conference: DAE solid state physics symposium 2015, Uttar Pradesh (India), 21-25 Dec 2015; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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