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Over the past two decades, significant progress in two-dimensional (2D) materials has invigorated research in condensed matter and material physics in low dimensions. While traditionally studied in three-dimensional systems, magnetism has…

材料科学 · 物理学 2024-08-05 Rabindra Basnet , Jin Hu

We measure spin-orbit torque generated by exfoliated layers of the low-symmetry semi-metal ZrTe$_3$ using the spin-torque ferromagnetic resonance (ST-FMR) technique. When the ZrTe$_3$ has a thickness greater than about 10 nm, artifacts due…

SmB6 has been predicted and verified as a prototype of topological Kondo insulators (TKIs). Here we report longitudinal magnetoresistance and Hall coefficient measurements on co-sputtered nanocrystalline SmB6 films and try to find possible…

强关联电子 · 物理学 2015-07-23 Jie Yong , Yeping Jiang , Xiaohang Zhang , Jongmoon Shin , Ichiro Takeuchi , Richard L. Greene

Understanding of metal insulator transitions in a strongly correlated system, driven by Anderson localization (disorder) and/or Mott localization (correlation), is a long standing problem in condensed matter physics. The prevailing…

强关联电子 · 物理学 2014-12-05 Abhijit Biswas , Ki-Seok Kim , Yoon Hee Jeong

Anomalous Hall-like signals in platinum in contact with magnetic insulators are common observations that could be explained by either proximity magnetization or spin Hall magnetoresistance. In this work, longitudinal and transverse…

介观与纳米尺度物理 · 物理学 2019-09-18 Tobias Kosub , Saül Vélez , Juan M. Gomez-Perez , Luis E. Hueso , Jürgen Faßbender , Fèlix Casanova , Denys Makarov

The burgeoning fields of spintronics and topological electronics require materials possessing a unique combination of properties: ferromagnetism, metallicity, and chemical stability. SrRuO3 (SRO) stands out as a compelling candidate due to…

The magnetoresistance (MR) effect is widely employed in technologies that pervade our world from magnetic reading heads to sensors. Diverse contributions to MR, such as anisotropic, giant, tunnel, colossal, and spin-Hall, are revealed in…

Van der Waals heterostructures based on two-dimensional materials have recently become a very active topic of research in spintronics, both aiming at a fundamental description of spin dephasing processes in nanostructures and as a potential…

介观与纳米尺度物理 · 物理学 2021-03-03 Anderson L. R. Barbosa , Jorge Gabriel G. S. Ramos , Aires Ferreira

The crystalline structure, anisotropic magnetoresistance (AMR), and magnetization of La0.7Sr0.3MnO3/SrTiO3 (LSMO/STO) superlattices grown by an rf sputtering system are systematically analyzed to study the spin polarization of manganite at…

强关联电子 · 物理学 2015-06-25 L. M. Wang

This work presents a unified theoretical framework for spin-resolved electron transport in magnetic point contacts (PCs) in nanoscale dimensions. This work advances existing research by presenting a model which seamlessly transitions…

介观与纳米尺度物理 · 物理学 2026-03-18 Mudasar Bashir , Andrew Sanchez , Pranaba Muduli , Artur Useinov

In a topological insulator (TI)/magnetic insulator (MI) hetero-structure, large spin-orbit coupling of the TI and inversion symmetry breaking at the interface could foster non-planar spin textures such as skyrmions at the interface. This is…

介观与纳米尺度物理 · 物理学 2021-09-24 Dhavala Suri , Archit Bhardwaj , Satyaki Sasmal , Karthik Raman

Strong Coulomb repulsion and spin-orbit coupling are known to give rise to exotic physical phenomena in transition metal oxides. Initial attempts to investigate systems where both of these fundamental interactions are comparably strong,…

In bilayers consisting of a normal metal (N) with spin-orbit coupling and a ferromagnet (F), the combination of the spin-Hall effect, the spin-transfer torque, and the inverse spin-Hall effect gives a small correction to the in-plane…

介观与纳米尺度物理 · 物理学 2021-07-15 David A. Reiss , Tobias Kampfrath , Piet W. Brouwer

We report that the finite thickness of three-dimensional topological insulator (TI) thin films produces an observable magnetoresistance (MR) in phase coherent transport in parallel magnetic fields. The MR data of Bi2Se3 and (Bi,Sb)2Te3 thin…

介观与纳米尺度物理 · 物理学 2013-07-30 C. J. Lin , X. Y. He , J. Liao , X. X. Wang , V. Sacksteder , W. M. Yang , T. Guan , Q. M. Zhang , L. Gu , G. Y. Zhang , C. G. Zeng , X. Dai , K. H. Wu , Y. Q. Li

The magneto-optic Kerr effect is a powerful tool for measuring magnetism in thin films at microscopic scales, as was recently demonstrated by the major role it played in the discovery of two-dimensional (2D) ferromagnetism in monolayer…

介观与纳米尺度物理 · 物理学 2021-03-25 Freddie Hendriks , Marcos H. D. Guimarães

We utilize spin Hall magnetoresistance (SMR) measurements to experimentally investigate the pure spin current transport and magnetic properties of nickel ferrite (NiFe2O4,NFO)/normal metal (NM) thin film heterostructures. We use…

介观与纳米尺度物理 · 物理学 2019-10-02 Matthias Althammer , Amit Vikam Singh , Tobias Wimmer , Zbigniew Galazka , Hans Huebl , Matthias Opel , Rudolf Gross , Arunava Gupta

Antiferromagnetic spin motion at terahertz (THz) frequencies attracts growing interests for fast spintronics, however their smaller responses to external field inhibit device application. Recently the noncollinear antiferromagnet Mn$_3$Sn,…

Altermagnets with pronounced spin-splitting band structure, unconventional magnetic and crystal symmetries, and exotic magneto-transport properties have received immense interest in cutting-edge spintronics, materials science, and condensed…

Spin Hall magnetoresistance (SMR) is studied in metallic bilayers that consist of heavy metal (HM) layer and a ferromagnetic metal (FM) layer. We find nearly a ten-fold increase of SMR in W/CoFeB compared to previously studied…

介观与纳米尺度物理 · 物理学 2016-03-23 Junyeon Kim , Peng Sheng , Saburo Takahashi , Seiji Mitani , Masamitsu Hayashi

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…