Article
Materials Science, Multidisciplinary
Jiahui Liu, Zhen Zhang, Maoxiang Fu, Xiaonan Zhao, Ronghuan Xie, Qiang Cao, Lihui Bai, Shishou Kang, Yanxue Chen, Shishen Yan, Liangmo Mei, Guolei Liu
Summary: In this study, we report the structural property of high quality Mn3Sn thin film on insulator substrate MgO(110) by molecular beam epitaxy, and the control of residual mismatch strain between Mn3Sn film and substrate on the anomalous Hall effect (AHE). Strain-free Mn3Sn(10 1 0) films or alternatively strained Mn3Sn(11 2 0) films were grown via a three-step process. The strain-free Mn3Sn film exhibits large anomalous Hall conductivity up to 30 Ω^-1cm^-1 at room temperature, comparable to bulk Mn3Sn. In contrast, AHE is switched off in strained Mn3Sn film due to piezomagnetic effect under a uniaxial compress strain of -2.0%.
RESULTS IN PHYSICS
(2023)
Review
Nanoscience & Nanotechnology
Libor Smejkal, Allan H. MacDonald, Jairo Sinova, Satoru Nakatsuji, Tomas Jungwirth
Summary: This review organizes the current understanding of anomalous antiferromagnetic materials that generate a Hall effect and discusses their applications in spintronics, topological condensed matter, and multipole magnetism.
NATURE REVIEWS MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Govindaraj Lingannan, Anupam K. Singh, Boby Joseph, Sanjay Singh, Sonachalam Arumugam
Summary: A systematic synchrotron high-pressure X-ray powder diffraction study of Mn3Sn up to 9 GPa reveals that the crystal symmetry remains in the hexagonal P6(3)/mmc space group with a continuous reduction of lattice parameters. Analysis suggests that the magnetic ground state of the Mn3Sn system may change above 4 GPa due to variations in local atomic interactions.
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
(2021)
Article
Chemistry, Physical
Tomasz Andrearczyk, Janusz Sadowski, Jerzy Wrobel, Tadeusz Figielski, Tadeusz Wosinski
Summary: The study found that adding 1% Bi atoms to the (Ga,Mn)(Bi,As) epitaxial layers significantly enhances the strength of the planar Hall effect. Additionally, Bi incorporation into the layers enhances their coercive fields and uniaxial magneto-crystalline anisotropy. This material may have potential applications in spintronic devices.
Article
Materials Science, Multidisciplinary
K. Hasegawa, T. Koyama, D. Chiba
Summary: The study found that inserting a thin Cu interlayer into the Pt/Co interface can enhance USMR, where the Cu/Co system exhibits a large GMR. Experimental results show that the spin current injection into the Co layer is not modulated by the Cu interlayer, and USMR increases with Cu thickness, reaching a peak before decreasing.
Article
Multidisciplinary Sciences
Masaki Uchida, Shin Sato, Hiroaki Ishizuka, Ryosuke Kurihara, Taro Nakajima, Yusuke Nakazawa, Mizuki Ohno, Markus Kriener, Atsushi Miyake, Kazuki Ohishi, Toshiaki Morikawa, Mohammad Saeed Bahramy, Taka-hisa Arima, Masashi Tokunaga, Naoto Nagaosa, Masashi Kawasaki
Summary: The study of the magnetic semiconductor EuAs revealed a new mechanism for inducing large anomalous Hall effect (AHE) in magnetic semiconductors through spin cluster scattering. This suggests potential for developing a field targeting diluted carriers strongly coupled to noncoplanar spin structures.
Article
Crystallography
Junhong Chen, Min Guan, Shangyu Yang, Siqi Zhao, Guoguo Yan, Zhanwei Shen, Wanshun Zhao, Lei Wang, Xingfang Liu, Guosheng Sun, Yiping Zeng
Summary: SiC is an excellent semiconductor material with high thermal conductivity, stable chemical properties, and high critical breakdown field strength. This paper investigates the epitaxial growth of SiC on n-type SiC substrates and analyzes the effects of growth temperature on the surface morphology of SiC epitaxial layers. The results show that higher growth temperature can lead to smoother surface and higher content of 4H-SiC.
JOURNAL OF CRYSTAL GROWTH
(2023)
Article
Physics, Applied
Daisuke Kan, Takahiro Moriyama, Ryotaro Aso, Shinji Horai, Yuichi Shimakawa
Summary: We grew epitaxial thin films of hematite on Al2O3 substrates and investigated their magnetic properties. The films undergo Morin transition at higher temperatures when grown at lower temperatures. The magnetic properties were characterized by spin Hall magnetoresistance, revealing tri-axial magnetic anisotropy and large changes in SMR ratio associated with Neel vector re-orientation due to Morin transition.
APPLIED PHYSICS LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Kacho Imtiyaz Ali Khan, Ram Singh Yadav, Himanshu Bangar, Akash Kumar, Niru Chowdhury, Prasanta Kumar Muduli, Pranaba Kishor Muduli
Summary: In this study, we investigate the growth of Fe3Sn2 thin films on Si/SiO2 substrates with two different seed layers (Ta and Pt). We find that Pt/Fe3Sn2 thin films form a pure ferromagnetic phase with higher saturation magnetization and exhibit an anomalous Hall coefficient that is two orders of magnitude higher than traditional ferromagnets. These results are important for the development of novel topological spintronic devices.
Article
Materials Science, Multidisciplinary
Qing Wang, Zhengguo Liang, Lingfei Wang, Jingdi Lu
Summary: Understanding the magnetotransport properties of SrRuO3 thin films and heterostructures is crucial for both fundamental research and practical applications. This study investigates the correlation between magnetoresistance and structure symmetry using SrRuO3/SrTiO3(001) epitaxial films. The results suggest that the relationship between structural symmetry and magnetoresistance is mediated by the modulations in magnetic anisotropy. These findings provide insights into harnessing the magnetotransport properties of SrRuO3 films and utilizing them in oxide-based spintronic devices.
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Arun Kumar, Raimondo Cecchini, Lorenzo Locatelli, Claudia Wiemer, Christian Martella, Lucia Nasi, Laura Lazzarini, Roberto Mantovan, Massimo Longo
Summary: This study achieved the optimized large-area growth of Bi2Te3 epitaxial layers on unbuffered i-Si(111) substrates via MOVPE and identified the key factors for maximizing layer quality. The grown Bi2Te3 thin layers exhibit high crystal quality, stoichiometry, uniformity, and topological insulator properties, showing potential for technology transfer to innovative devices.
CRYSTAL GROWTH & DESIGN
(2021)
Article
Nanoscience & Nanotechnology
Zuolun Chen, Xiang Liu, Jiawei Jiang, Rui Li, Yue Wang, Liu Guo, Yingdan Xu, Wenbo Mi
Summary: The integration of ferromagnetic/antiferromagnetic bilayers with exchange bias effect on flexible substrates is crucial for flexible spintronics. Here, the epitaxial Co/MnN bilayers are deposited on mica by facing-target sputtering. A large in-plane exchange bias field (HEB) of 1800 Oe with a coercive field (HC) of 2750 Oe appears in the Co (3.8 nm)/MnN (15.0 nm) bilayer at 5 K after field cooling from 300 to 5 K. Effective interfacial exchange energy Jeff of the Co/MnN bilayer is 0.83 erg/cm2. The strain-induced maximum increase of HEB and HC reaches 18% and 21%, respectively, in the Co(3.8 nm)/MnN(15.0 nm) bilayer. Strain-modulated HEB is attributed to the change of interfacial exchange coupling between Co and MnN layers. HEB is inversely proportional to Co thickness but independent of MnN thickness. The change of HEB is less than 5% after 100 bending cycles, indicating mechanical durability.。
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Z. J. Razi, A. Khajehnezhad
Summary: Lanthanum strontium manganite (LSMO) nanoparticles were synthesized by combustion method using different fuels, and their microstructure and properties were studied. The results showed that the samples had a rhombohedral perovskite structure and distinct chemical bonds. The saturation magnetization and metal-insulator transition temperature varied with different fuels.
Article
Materials Science, Ceramics
Ping Zhang, Mengjie Qin, Zhihao Lou, Shuyao Cao, Lingyun Gong, Jie Xu, Michael John Reece, Haixue Yan, Zinovi Dashevsky, Feng Gao
Summary: Textured ceramics of Sr0.9La0.1TiO3 were successfully fabricated using the reactive template grain growth method. The ceramics exhibited low lattice thermal conductivity and improved thermoelectric properties due to the enhanced phonon scattering by multi-scale boundaries and interfaces.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Chemistry, Physical
N. A. Liedienov, I. V. Fesych, V. K. Prokopenko, V. G. Pogrebnyak, A. V. Pashchenko, G. G. Levchenko
Summary: The physical properties of La0.6Sr0.3Mn1.1O3 (LSMO) nanopowder were comprehensively studied, revealing that it is a single-phase perovskite material with excellent magnetic, magneto-resonance, transport, and magnetoresistance properties. This material can be used to create highly sensitive current, magnetic field, temperature, and pressure sensors.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Physics, Applied
Yevgeniy Telepinsky, Vladislav Mor, Moty Schultz, Yu-Ming Hung, Andrew D. Kent, Lior Klein
APPLIED PHYSICS LETTERS
(2016)
Article
Nanoscience & Nanotechnology
Vladislav Mor, Debangsu Roy, Moty Schultz, Lior Klein
Article
Engineering, Electrical & Electronic
Anatoli Mordakhay, Yevgeniy Telepinsky, Lior Klein, Joseph Shor, Alexander Fish
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS
(2018)
Article
Multidisciplinary Sciences
Shubhankar Das, Liran Avraham, Yevgeniy Telepinsky, Vladislav Mor, Moty Schultz, Lior Klein
SCIENTIFIC REPORTS
(2018)
Article
Physics, Multidisciplinary
D. Christensen, Y. Frenkel, Y. Z. Chen, Y. W. Xie, Z. Y. Chen, Y. Hikita, A. Smith, L. Klein, H. Y. Hwang, N. Pryds, B. Kalisky
Article
Physics, Applied
Shubhankar Das, Ariel Zaig, Moty Schultz, Lior Klein
APPLIED PHYSICS LETTERS
(2020)
Article
Physics, Applied
Shubhankar Das, Ariel Zaig, Moty Schultz, Susana Cardoso, Diana C. Leitao, Lior Klein
APPLIED PHYSICS LETTERS
(2020)
Article
Physics, Applied
Hariharan Nhalil, Proloy T. Das, Moty Schultz, Shai Amrusi, Asaf Grosz, Lior Klein
APPLIED PHYSICS LETTERS
(2020)
Article
Physics, Applied
Proloy T. Das, H. Nhalil, M. Schultz, A. Grosz, L. Klein
Summary: The magnetization dynamics of nanomagnetic beads with a diameter ranging from 80 to 250 nm were studied using a high-resolution elliptical planar Hall effect (EPHE) sensor integrated with a fluidic channel. The dynamics were well described with Cole-Cole and exponential decay models for frequency and time domains, respectively. The potential use of EPHE sensors in lab-on-a-chip applications was discussed.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Chemistry, Analytical
Hariharan Nhalil, Moty Schultz, Shai Amrusi, Asaf Grosz, Lior Klein
Summary: The article describes a magnetic field gradiometer based on a single elliptical planar Hall effect sensor, capable of measuring magnetic fields at different positions within a small scale. It demonstrates good performance at various frequencies and shows promise in practical testing scenarios.
Article
Physics, Applied
Hariharan Nhalil, Moty Schultz, Shai Amrusi, Asaf Grosz, Lior Klein
Summary: We present a planar Hall effect magnetometer consisting of a parallel array of permalloy-based elliptical sensors. The array configuration and fabrication parameters are optimized using numerical simulations. The magnetometer achieves equivalent magnetic noise (EMN) of 16 pT/(sic) Hz at 100 Hz, 25 pT/(sic) Hz at 10 Hz, 98 pT/(sic) Hz at 1 Hz, and 470 pT/(sic) Hz at 0.1 Hz. The absence of magnetic flux concentrators in this design highlights its advantages. This straightforward, cost-effective magnetometer shows potential for applications requiring pT resolution at room temperature.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Ariel Zaig, Shubhankar Das, Moty Shultz, Lior Klein
Summary: Using bilayer films of-Ta/Ni0.8Fe0.2, elliptical structures with single magnetic domain behavior are fabricated. Giant response to induced spin-orbit torques is observed in these devices, which is quantitatively correlated with the in-plane angles of the magnetization and the magnetic field during magnetization reversal of the NiFe layer. Theoretical and applicative implications of this behavior are discussed.
Article
Engineering, Electrical & Electronic
Hariharan Nhalil, Tzahi Givon, Proloy Taran Das, Nir Hasidim, Vladislav Mor, Moty Schultz, Shai Amrusi, Lior Klein, Asaf Grosz
IEEE SENSORS LETTERS
(2019)
Article
Materials Science, Multidisciplinary
Debangsu Roy, Sagi Davidovitch, Yu-Ming Hung, Moty Schultz, Stephen D. Albright, M. D. Morales-Acosta, Frederick J. Walker, James W. Reiner, C. H. Ahn, Andrew D. Kent, Lior Klein
Article
Materials Science, Multidisciplinary
Debangsu Roy, Yiftach Frenkel, Sagi Davidovitch, Eylon Persky, Noam Haham, Marc Gabay, Beena Kalisky, Lior Klein
