Multifunctional Magnetic Oxide-MoS2 Heterostructures on Silicon

Allen Jian Yang; Liang Wu; Yanran Liu; Xinyu Zhang; Kun Han; Ying Huang; Shengyao Li; Xian Jun Loh; Qiang Zhu; Rui Su; Ce-Wen Nan; Xiao Renshaw Wang

doi:10.1002/adma.202302620

Multifunctional Magnetic Oxide-MoS₂ Heterostructures on Silicon

Adv Mater. 2023 Aug;35(33):e2302620. doi: 10.1002/adma.202302620. Epub 2023 Jul 6.

Authors

Allen Jian Yang¹, Liang Wu², Yanran Liu¹, Xinyu Zhang², Kun Han³, Ying Huang⁴, Shengyao Li¹, Xian Jun Loh⁵, Qiang Zhu^{5

6}, Rui Su^{1

7

8}, Ce-Wen Nan⁹, Xiao Renshaw Wang^{1

7}

Affiliations

¹ Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore.
² Faculty of Material Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan, 650093, China.
³ Information Materials and Intelligent Sensing Laboratory of Anhui Province, Institutes of Physical Science and Information Technology, Anhui University, Hefei, 230601, China.
⁴ State Key Laboratory of Environment-friendly Energy Materials, Southwest University of Science and Technology, Mianyang, 621010, China.
⁵ Institute of Materials Research and Engineering (IMRE), A*STAR, 2 Fusionopolis Way, Innovis, Singapore, 138634, Singapore.
⁶ School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore.
⁷ School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, 637371, Singapore.
⁸ MajuLab, International Joint Research Unit UMI 3654, CNRS, Université Côte d'Azur, Sorbonne Université, National University of Singapore, Nanyang Technological University, Singapore, 637371, Singapore.
⁹ State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China.

PMID: 37227936
DOI: 10.1002/adma.202302620

Abstract

Correlated oxides and related heterostructures are intriguing for developing future multifunctional devices by exploiting their exotic properties, but their integration with other materials, especially on Si-based platforms, is challenging. Here, van der Waals heterostructures of La_0.7 Sr_0.3 MnO₃ (LSMO) , a correlated manganite perovskite, and MoS₂ are demonstrated on Si substrates with multiple functions. To overcome the problems due to the incompatible growth process, technologies involving freestanding LSMO membranes and van der Waals force-mediated transfer are used to fabricate the LSMO-MoS₂ heterostructures. The LSMO-MoS₂ heterostructures exhibit a gate-tunable rectifying behavior, based on which metal-semiconductor field-effect transistors (MESFETs) with on-off ratios of over 10⁴ can be achieved. The LSMO-MoS₂ heterostructures can function as photodiodes displaying considerable open-circuit voltages and photocurrents. In addition, the colossal magnetoresistance of LSMO endows the LSMO-MoS₂ heterostructures with an electrically tunable magnetoresponse at room temperature. This work not only proves the applicability of the LSMO-MoS₂ heterostructure devices on Si-based platform but also demonstrates a paradigm to create multifunctional heterostructures from materials with disparate properties.

Keywords: 2D materials; correlated oxides; metal-semiconductor field-effect transistors; photodiodes; van der Waals heterostructures.

Abstract

Grants and funding