Article
Physics, Applied
Yingyi Tian, Shuanhu Wang, Xiangyang Wei, Ruishu Yang, Kexin Jin
Summary: This study investigates the modulation of electric, magnetic, and thermal properties of transition metal oxide films by introducing a polycrystalline structure, and explores the mechanism through studying the two-channel anomalous Hall effect in polycrystalline SrRuO3 films.
APPLIED PHYSICS LETTERS
(2022)
Article
Chemistry, Physical
Han Li, Chaoyang Kang, Jiesong Liu, Zhenli Wang, Qingqing Miao, Liping Zhang, Xinxiu Wu, Xinqian Ren, Anxin Meng, Xuegang Chen, Weifeng Zhang
Summary: This study observes the unconventional hump-like anomalous Hall effect (AHE) in heterostructures and explains it using a two-domain model. The hump-like AHE can be controlled by external factors such as thickness, strain, and oxygen vacancies.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Hyeon Han, Hua Zhou, Charles Guillemard, Manuel Valvidares, Arpit Sharma, Yan Li, Ankit K. Sharma, Ilya Kostanovskiy, Arthur Ernst, Stuart S. P. Parkin
Summary: This study uses the hydrogen spillover method to tailor the properties of SrRuO3 thin films by incorporating hydrogen. It is found that the magnetization and Curie temperature of the films are significantly reduced, and the structure evolves from an orthorhombic to a tetragonal phase with increasing hydrogen content. In situ crystal truncation rod measurements show that the structural phase transition is related to tilting of the RuO6 octahedral units. Density functional theory analysis demonstrates that the significant changes in magnetization result from shifts in the Fermi level. These findings provide new insights into the physical properties of SrRuO3 through the modulation of its lattice symmetry and emergent physical phenomena using the hydrogen spillover technique.
ADVANCED MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Mo Zhu, Zhangzhang Cui, Weiwei Li, Zheling Shan, Jianlin Wang, Haoliang Huang, Zhengping Fu, Yalin Lu
Summary: The research reveals another type of THE-like anomaly in SrRuO3 films, demonstrating a method to quantitatively distinguish between THE and inhomogeneous AHE based on scanning the Hall resistivity minor loops.
Article
Multidisciplinary Sciences
Hasan Siddiquee, Christopher Broyles, Erica Kotta, Shouzheng Liu, Shiyu Peng, Tai Kong, Byungkyun Kang, Qiang Zhu, Yongbin Lee, Liqin Ke, Hongming Weng, Jonathan D. D. Denlinger, L. Andrew Wray, Sheng Ran
Summary: In this study, the authors report a large anomalous Hall conductivity in a Kondo lattice ferromagnet USbTe, which is dominated by intrinsic Berry curvature at low temperatures. However, the scaling relation derived from Fermi liquid theory does not hold for the Berry curvature induced anomalous Hall effect. The onset of the Berry curvature contribution is consistent with the Kondo coherent temperature. Combined with ARPES measurement and DMFT calculations, the results strongly suggest that Berry curvature is hosted by the flat bands induced by Kondo hybridization at the Fermi level. This highlights the need for new theories to explain the interaction between strong correlation and Berry curvature in anomalous Hall effect.
NATURE COMMUNICATIONS
(2023)
Article
Physics, Multidisciplinary
Zhen-Li Wang, Chao-Yang Kang, Cai-Hong Jia, Hai-Zhong Guo, Wei-Feng Zhang
Summary: In this study, we fabricated SrRuO3/PbZr0.52Ti0.48O3 heterostructures with an in-plane tensile-strained SrRuO3 layer and investigated the effect of an applied electric field on the anomalous Hall effect. The experiment results showed that the sign and magnitude of the anomalous Hall conductivity can be effectively controlled with an electric field, which is associated with the magnetization rotation in SrRuO3. These findings are significant for modulating the magnetization rotation in spintronic devices based on SrRuO3 heterostructures.
Article
Physics, Applied
Kartik Samanta, Marjana Lezaic, Stefan Bluegel, Yuriy Mokrousov
Summary: The study reveals that the anomalous Hall effect in SRO ultrathin films is influenced by substrate-induced strain and oxygen octahedral distortion, showing different structural and property variations under different strains. Berry curvature calculations predict positive and negative anomalous Hall conductivity values under specific strains, indicating a strong impact of longitudinal thermal fluctuations of Ru spin moments on the anomalous Hall effect in this system.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Seong Won Cho, Seung Gyo Jeong, Hee Young Kwon, Sehwan Song, Seungwu Han, Jung Hoon Han, Sungkyun Park, Woo Seok Choi, Suyoun Lee, Jun Woo Choi
Summary: Investigating the complex magnetic interactions on the formation of nontrivial magnetic phases is crucial for understanding magnetic materials. SrRuO3 heterostructures provide a suitable platform to study these interactions and their effects on topological magnetic phases. The variation of Hall effect with the repetition number in SrRuO3/SrTiO3 superlattices may be attributed to the interplay between different types of interactions, leading to a modulation of topological magnetic phases.
Article
Physics, Applied
Donghan Kim, Byungmin Sohn, Minsoo Kim, Sungsoo Hahn, Youngdo Kim, Jong Hyuk Kim, Young Jai Choi, Changyoung Kim
Summary: We investigated the anomalous Hall effect and hump structure in SrRuO3 ultra-thin films with an SrTiO3 capping layer and ionic liquid gating. The STO capping led to sign changes in the AHE and modulation of the hump structure, showing that the hump structure and AHE can be controlled by tuning inversion symmetry and the electric field at the interface.
APPLIED PHYSICS LETTERS
(2021)
Article
Physics, Multidisciplinary
V. K. Kozin, V. A. Shabashov, A. Kavokin, I. A. Shelykh
Summary: This study reveals that even in the absence of external electric fields, electrically neutral excitons can be influenced by crossed electric and magnetic fields, changing the direction of their propagation. The anomalous exciton Hall effect proposed in this research can be used for spatial separation of dark and bright excitons.
PHYSICAL REVIEW LETTERS
(2021)
Editorial Material
Nanoscience & Nanotechnology
Giulia Pacchioni
Summary: The article in Nature reports the observation of the quantum anomalous Hall effect in freestanding bilayer graphene.
NATURE REVIEWS MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Xiaokang Yao, Can Wang, Er-Jia Guo, Xinyan Wang, Xiaomei Li, Lei Liao, Yong Zhou, Shan Lin, Qiao Jin, Chen Ge, Meng He, Xuedong Bai, Peng Gao, Guozhen Yang, Kui-Juan Jin
Summary: The study investigates the physics and functionalities of interfaces between complex oxides through the fabrication of multilayers with atomically sharp interfaces. Atomically resolved transmission electron microscopy reveals the ferroelectric proximity effect, with a large ionic displacement in BiFeO3 penetrating into the SrRuO3 layers near the interfaces. Magnetic measurements further confirm the different magnetic ground states in the interfacial and middle regions of each SrRuO3 layer in the multilayers.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
Daisuke Kan, Lingling Xie, Yuichi Shimakawa
Summary: The study reveals the unique scaling behavior of the anomalous Hall conductivity sigma(AHE) in NiCo2O4 films, indicating the intrinsic contribution from Berry curvature dominates the anomalous Hall effect. When impurity scattering comes into play, the dominant contribution to sigma(AHE) shifts from the intrinsic Berry phase.
Article
Chemistry, Multidisciplinary
Lixuan Tai, Bingqian Dai, Jie Li, Hanshen Huang, Su Kong Chong, Kin L. Wong, Huairuo Zhang, Peng Zhang, Peng Deng, Christopher Eckberg, Gang Qiu, Haoran He, Di Wu, Shijie Xu, Albert Davydov, Ruqian Wu, Kang L. Wang
Summary: In this study, the researchers confirm the genuine topological Hall effect (THE) with the anomalous Hall effect (AHE) through transport and magneto-optical Kerr effect microscopy. The presence of magnetic skyrmions is directly observed, and genuine THE is found to occur in the transition region of the AHE. The researchers also distinguish between artifact THE and genuine THE using minor loops, temperature dependence, and gate dependence.
Article
Materials Science, Multidisciplinary
Lei Wang, Tai Min, Ke Xia
Summary: The abnormal scaling law of the anomalous Hall effect in L12-type Mn3X (X = Ir, Pt, Rh) is found to originate from a two-center scattering (TCS) contribution using a first-principles-based scattering wave-function approach in this study. The TCS contribution dominates the anomalous Hall effect in noncollinear antiferromagnetic metals, with the anomalous Hall conductivity being as large as & sigma;H <^> 5 x 104 (0 cm)-1 in L12-type Mn3Ir at low temperature, which is two orders of magnitude larger than the current Berry curvature calculations.
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
