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The discovery of altermagnet (AM) marks a significant advancement in magnetic materials, combining characteristics of both ferromagnetism and antiferromagnetism. In this Letter, we focus on CrSb, which has been verified to be an AM and to…

A magnetoresistance (MR) anomaly at low temperatures has been observed in a variety of systems, ranging from low-dimensional chalcogenides to spin and charge density wave (SDW/CDW) metals and, most recently, topological semimetals. In some…

Materials Science · Physics 2025-04-10 Yejun Feng , Yishu Wang , T. F. Rosenbaum , P. B. Littlewood , Hua Chen

We report the observation of the three-dimensional angular dependence of the spin Hall magnetoresistance (SMR) in a bilayer of the epitaxial antiferromagnetic insulator NiO(001) and the heavy metal Pt, without any ferromagnetic element. The…

Ferromagnetic resonance (FMR) serves as a powerful probe of magnetization dynamics and anisotropy in percolating ferromagnets, where short-range interactions govern long-range magnetic order. We apply this approach to Ga$_{1-x}$Mn$_x$N ($x…

Materials Science · Physics 2025-10-16 Y. K. Edathumkandy , K. Das , K. Gas , D. Sztenkiel , D. Hommel , H. Przybylińska , M. Sawicki

We present a thorough magnetization and magneto-transport study of the diluted Fe-intercalated CrTe2 family member, Fe1/5CrTe2, a van der Waals ferromagnet. Fe1/5CrTe2 shows an elevated Curie transition temperature of 182 K in comparison to…

Strongly Correlated Electrons · Physics 2026-04-07 M. Lamba , P. Saha , K. Yadav , N. Kamboj , S. Patnaik

Spin Hall magnetoresistance (SMR) has been investigated in Pt/NiO/YIG structures in a wide range of temperature and NiO thickness. The SMR shows a negative sign below a temperature which increases with the NiO thickness. This is contrary to…

Mesoscale and Nanoscale Physics · Physics 2017-04-05 Dazhi Hou , Zhiyong Qiu , Joseph Barker , Koji Sato , Kei Yamamoto , Saul Velez , Juan M. Gomez-Perez , Luis E. Hueso , Felix Casanova , Eiji Saitoh

In this work, we reveal the coexistence and correlation of a topological cusp anomaly in the planar Hall signal and a spin-flip scattering dominated positive longitudinal magnetoresistance (MR) across the entire temperature range below the…

Materials Science · Physics 2025-07-11 Alapan Bera , Soumik Mukhopadhyay

The recent realization of epitaxial SrCoO$_3$ thin films has triggered a renewed interest in their electronic, magnetic, and ionic properties. Here we uncover several unusual magneto-transport properties of this compound, suggesting that it…

Mesoscale and Nanoscale Physics · Physics 2018-07-31 Ding Zhang , Hiroaki Ishizuka , Nianpeng Lu , Yujia Wang , Naoto Nagaosa , Pu Yu , Qi-Kun Xue

In this review, we outline the important results on the resistivity encountered by an electron in magnetically ordered materials. The mechanism of the collision between the electron and the lattice spins is shown. Experiments on the spin…

Statistical Mechanics · Physics 2023-01-10 Danh-Tai Hoang , Hung T. Diep

Non-coplanar spin textures with scalar spin chirality can generate effective magnetic field that deflects the motion of charge carriers, resulting in topological Hall effect (THE), a powerful probe of the ground state and low-energy…

Next-generation spintronic sensors aim to overcome the limitations of traditional tunneling-magnetoresistance (TMR) devices, such as complex manufacturing, high $1/f$ noise, and significant offsets. This work presents a comprehensive…

Long-range magnetic textures, such as magnetic skyrmion, give rise to rich transport properties in magnetic metals, such as the anomalous Hall effect related to spin chirality, a.k.a. topological Hall effect. In addition to the topological…

Mesoscale and Nanoscale Physics · Physics 2024-06-19 Ryunosuke Terasawa , Hiroaki Ishizuka

The role of spin fluctuations near magnetic phase transitions is crucial for generating various exotic phenomena, including anomalies in the extraordinary Hall effect, excess spin-current generation through the spin-Hall effect (SHE), and…

We experimentally investigate and quantitatively analyze the spin Hall magnetoresistance effect in ferromagnetic insulator/platinum and ferromagnetic insulator/nonferromagnetic metal/platinum hybrid structures. For the ferromagnetic…

We review our studies of the effect of transverse fields on the susceptibility and magnetization of single crystals of the prototype single molecule magnet (SMM), Mn$_{12}$-acetate, and of a new high-symmetry variant,…

Mesoscale and Nanoscale Physics · Physics 2014-01-29 P. Subedi , Bo Wen , Y. Yeshurun , M. P. Sarachik , A. J. Millis , A. D. Kent

It is demonstrated that thermally induced longitudinal spin fluctuations (LSF) play an important role in itinerant Co$_3$Mn$_2$Ge at an elevated temperature. The effect of LSF is taken into account during {\it ab initio} calculations via a…

Materials Science · Physics 2022-06-01 Erna K. Delczeg-Czirjak , O. Eriksson , A. V. Ruban

We investigated spin Hall magnetoresistance in FeMn/Pt bilayers, which was found to be one order of magnitude larger than that of heavy metal and insulating ferromagnet or antiferromagnet bilayer systems, and comparable to that of NiFe/Pt…

Mesoscale and Nanoscale Physics · Physics 2016-10-13 Yumeng Yang , Yanjun Xu , Kui Yao , Yihong Wu

We have studied temperature dependence of both diagonal and Hall resistivity in the vicinity of $\nu=1/2$. Magnetoresistance was found to be positive and almost independent of temperature: temperature enters resistivity as a logarithmic…

Mesoscale and Nanoscale Physics · Physics 2009-10-30 L. P. Rokhinson , V. J. Goldman

This study aims to unravel the mechanism of colossal magnetoresistance (CMR) observed in n-type HgCr$_2$Se$_4$, in which low-density conduction electrons are exchange-coupled to a three-dimensional Heisenberg ferromagnet with a Curie…

Mesoscale and Nanoscale Physics · Physics 2016-12-21 Chaojing Lin , Changjiang Yi , Youguo Shi , Lei Zhang , Guangming Zhang , Jens Mueller , Yongqing Li

The rapidly expanding class of quantum materials known as {\emph{topological semimetals}} (TSM) display unique transport properties, including a striking dependence of resistivity on applied magnetic field, that are of great interest for…

Strongly Correlated Electrons · Physics 2018-11-05 Ian A. Leahy , Yu-Ping Lin , Peter E. Siegfried , Andrew C. Treglia , Justin C. W. Song , Rahul M. Nandkishore , Minhyea Lee