2026-10-12T19:33:40Z https://www.scidb.cn/oai

10.57760/sciencedb.05770 2022-11-24T17:47:07Z

2022-11-24 Anisotropic terahertz transmission induced by the external magnetic field in La0.67Ca0.33MnO3 film doi:10.57760/sciencedb.05770 en A systemic investigation of the terahertz (THz) transmission of La0.67Ca0.33MnO3 film on the (001)-oriented NdGaO3 substrate under external magnetic field and low temperature have been performed. The significant THz absorption difference between the out-of-plane and the in-plane magnetic field direction is observed, which is consistent with the electrical transport measurement using the standard four-probe technique. Furthermore, we find that the complex THz conductivities can be reproduced in terms of the Drude Smith equation as the magnetic field is perpendicular to the film plane, whereas it deviates from this model when the in-plane magnetic field is applied. We suggest that such anisotropies in THz transport dynamics have close correspondences with the phase separation and anisotropic magnetoresistance effects in the perovskite-structured manganites. Our work demonstrates that the THz time-domain spectroscopy (TDS) can be an effective non-contact method for studying the magneto-transport properties of the perovskite-structured manganites. (C) 2021 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license ROOM-TEMPERATURE; PHASE-SEPARATION; MAGNETORESISTANCE; TRANSITION Feng Chen PUBLIC https://creativecommons.org/licenses/by/4.0/ dataset http://www.doi.org/10.1063/4.0000123 Science Data Bank