Observation of the Anomalous Hall Effect in NdTiO3/SrTiO3Heterostructures

Mandal, P and Ojha, SK and Patel, RK and Kumar, S and Middey, S (2021) Observation of the Anomalous Hall Effect in NdTiO3/SrTiO3Heterostructures. In: Journal of Physical Chemistry C, 125 (23). pp. 12968-12974.

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Abstract

The nature of magnetism at the complex oxide interface has been a highly debated topic since its discovery. The metallic interface between polar and nonpolar insulating complex oxides is a testbed for observing such magnetic behaviors. In this work, we investigate the interface between Mott insulating NdTiO3 (NTO) and band insulating SrTiO3 (STO). Our NTO/STO heterostructures, grown by a pulsed laser deposition system, exhibit metallic behavior with high electrical conductivity. Most importantly, the sample with 2 unit cell NTO film on STO substrate exhibits the anomalous Hall effect (AHE) below 10 K. Our scaling analysis between longitudinal sheet resistance and the anomalous component of transverse sheet resistance infers that the AHE in this sample is related to the skew scattering. Since the carrier freezing effect is also observed below 10 K, we attribute these frozen electrons as the asymmetric skew-scattering centers.

Item Type:	Journal Article
Publication:	Journal of Physical Chemistry C
Publisher:	American Chemical Society
Additional Information:	The copyright for this article belongs to American Chemical Society
Keywords:	Hall effect; Insulation; Neodymium compounds; Pulsed laser deposition; Sheet resistance; Strontium titanates, Anomalous component; Anomalous hall effects; High electrical conductivity; Magnetic behavior; Metallic behaviors; Metallic interfaces; Scaling analysis; Skew scattering, Titanium compounds
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	29 Nov 2023 10:38
Last Modified:	29 Nov 2023 10:38
URI:	https://eprints.iisc.ac.in/id/eprint/82963

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