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In all van der Waals layered antiferromagnetic semiconductors investigated so far a negative magnetoresistance has been observed in vertical transport measurements, with characteristic trends that do not depend on applied bias. Here we…

Mesoscale and Nanoscale Physics · Physics 2024-10-24 Xiaohanwen Lin , Fan WU , Nicolas Ubrig , Menghan Liao , Fengrui Yao , Ignacio Gutiérrez-Lezama , Alberto F. Morpurgo

The electronic and magnetic structure of CrPS$_{4}$, a 2D magnetic semiconductor is examined by employing the SCAN meta-GGA density functional. We find the resulting magnetic moment and band gap are in excellent agreement with experiment.…

Strongly Correlated Electrons · Physics 2024-01-12 A. R. Alcantara , C. Lane , J. T. Haraldsen , R . M. Tutchton

Chromium thiophosphate (CrPS$_4$) is a layered two-dimensional antiferromagnetic semiconductor exhibiting intriguing spintronic and magneto-optical properties, yet its electronic band structure has remained experimentally uncharacterized.…

Van der Waals semiconducting magnets exhibit a cornucopia of physical phenomena originating from the interplay of their semiconducting and magnetic properties. However, a comprehensive understanding of how semiconducting processes and…

Studies on the phenomenon of magnetoresistance (MR) have produced intriguing and application-oriented outcomes for decades--colossal MR, giant MR and recently discovered extremely large MR of millions of percents in semimetals can be taken…

Strongly Correlated Electrons · Physics 2017-02-28 Abhishek Pandey , Chandan Mazumdar , R. Ranganathan , D. C. Johnston

We study magneto-transport in heterostructures composed of the van der Waals antiferromagnet CrPS$_{4}$ and the heavy metals Pt and Pd. The transverse resistance (R$_{xy}$) signal reveals the spin-flop transition of CrPS$_{4}$ and a…

Transistors realized on 2D antiferromagnetic semiconductor CrPS$_4$ exhibit large magnetoconductance, due to magnetic-field-induced changes in magnetic state. The microscopic mechanism coupling conductance and magnetic state is not…

Mesoscale and Nanoscale Physics · Physics 2023-09-11 Fan Wu , Marco Gibertini , Kenji Watanabe , Takashi Taniguchi , Ignacio Gutiérrez-Lezama , Nicolas Ubrig , Alberto F. Morpurgo

Two-dimensional (2D) van der Waals (vdW) magnets with layer-dependent magnetic states and/or diverse magnetic interactions and anisotropies have attracted extensive research interest. Despite the advances, a notable challenge persists in…

Compounds with two-dimensional (2D) layers of magnetic ions weakly connected by van der Waals bonding offer routes to enhance quantum behavior, stimulating both fundamental and applied interest. CrPS4 is one such magnetic van der Waals…

Strongly Correlated Electrons · Physics 2020-07-07 S. Calder , A. V. Haglund , Y. Liu , D. M. Pajerowski , H. B. Cao , T. J. Williams , V. O. Garlea , D. Mandrus

Colossal magnetoresistance (CMR) is highly applicable in spintronic devices such as magnetic sensors, magnetic memory, and hard drives. Typically, CMR is found in Weyl semimetals characterized by perfect electron-hole symmetry or…

Mesoscale and Nanoscale Physics · Physics 2023-11-28 Yiwen Zhang , Bo Xie , Yue Yang , Yueshen Wu , Xin Lu , Yuxiong Hu , Yifan Ding , Jiadian He , Peng Dong , Jinghui Wang , Xiang Zhou , Jianpeng Liu , Zhu-Jun Wang , Jun Li

Magnetoresistive effects are typically symmetric under magnetization reversal. However, nonlinear spin transport can give rise to unidirectional magnetoresistance in systems with strong spin-orbit interaction and broken inversion symmetry.…

Materials Science · Physics 2026-01-29 Xue He , Hans Gløckner Giil , Caiqiong Xu , Jicheng Wang , Arne Brataas , Jinbo Yang , Yanglong Hou , Rui Wu , Shilei Ding

Colossal magnetoresistance (CMR) is commonly observed in magnetic semiconductors when an external magnetic field is applied, usually accompanied by anomalous resistivity peaks or humps which were previously considered as evidence of a…

Materials Science · Physics 2025-03-26 Zhihao Liu , Zhong Fang , Hongming Weng , Quansheng Wu

Highly-anisotropic in-plane magneto-resistance (MR) in graphite (HOPG) samples has been recently observed (Y. Kopelevich et al., arXiv:1202.5642) which is negative and linear in low fields in some current direction while it is giant,…

Mesoscale and Nanoscale Physics · Physics 2012-08-15 A. S. Alexandrov , V. A. Dediu , V. V. Kabanov , R. R. da Silva , Y. Kopelevich

The recent discovery of magnetism within the family of exfoliatable van der Waals (vdW) compounds has attracted considerable interest in these materials for both fundamental research and technological applications. However current vdW…

The exploration of spin configurations and magnetoresistance in van der Waals magnetic semiconductors, particularly in the realm of thin-layer structures, is of paramount significance for the development of two-dimensional spintronic…

Mesoscale and Nanoscale Physics · Physics 2025-05-01 Ziqi Liu , Yichang Sun , Chengfeng Zhu , Canyu Hong , Yuchen Gao , Zeyuan Sun , Kenji Watanabe , Takashi Taniguchi , Shiwei Wu , Zuxin Chen , Pingfan Gu , Yu Ye

Unusual magnetic properties of Van der Waals type antiferromagnetic semiconductors make them highly attractive for spintronics and optoelectronics. A link between the magnetic and optical properties of those materials, required for…

Large positive (P) magnetoresistance (MR) has been observed in parallel magnetic fields in a single 2D layer in a delta-doped GaAs/AlGaAs heterostructure with a variable-range-hopping (VRH) mechanism of conductivity. Effect of large PMR is…

Disordered Systems and Neural Networks · Physics 2009-10-31 I. Shlimak , S. I. Khondaker , M. Pepper , D. A. Ritchie

Recent research has revealed remarkable properties of the two-dimensional (2D) van der Waals layered crystal CrSBr, which is both a semiconductor and an A-type antiferromagnet. Here we show the role of strong magnetoelastic coupling in the…

Magnetoresistance typically exhibits even symmetry with respect to the magnetic field, owing to time reversal symmetry (TRS) as dictated by Onsager reciprocity relations. However, in certain systems where TRS is broken, magnetoresistance…

Materials Science · Physics 2025-08-01 Tomoki Hotta , Le Duc Anh , Takahiro Chiba , Yohei Kota , Masaaki Tanaka

We make a theoretical study of the quantum oscillations of the tunneling magnetoresistance (TMR) as a function of the spacer layer thickness. Such oscillations were recently observed in tunneling junctions with a nonmagnetic metallic spacer…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 H. Itoh , J. Inoue A. Umerski , J. Mathon
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