Sharp fall of electrical resistance for a small application of magnetic field on a metastable form of a compound, Tb5Si3, under pressure

Iyer, Kartik K.; Sampathkumaran, E. V.
October 2009
Applied Physics Letters;10/5/2009, Vol. 95 Issue 14, p142504
Academic Journal
We report an unusual sensitivity of electrical resistivity (ρ) to an application of a small magnetic field in an intermetallic compound, Tb5Si3, under pressure. In this compound, there is a magnetic-field-induced first-order magnetic transition at 1.8 K. Under pressure, there is a metastable magnetic phase after reducing the field to zero. This metastable phase is relatively of higher ρ and interestingly a small magnetic field (<2 kOe) in the reverse direction results in a sharp fall of ρ to restore virgin state ρ. The present finding could be relevant in spintronic applications.


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