npj Quantum Materials最新文献_第9页

Unveiling the quasiparticle behaviour in the pressure-induced high-Tc phase of an iron-chalcogenide superconductor 揭示铁-钙化物超导体压力诱导高锝相中的准粒子行为

IF 5.7 1区物理与天体物理

npj Quantum Materials Pub Date : 2024-07-08 DOI: 10.1038/s41535-024-00663-1

Z. Zajicek, P. Reiss, D. Graf, J. C. A. Prentice, Y. Sadki, A. A. Haghighirad, A. I. Coldea

{"title":"Unveiling the quasiparticle behaviour in the pressure-induced high-Tc phase of an iron-chalcogenide superconductor","authors":"Z. Zajicek, P. Reiss, D. Graf, J. C. A. Prentice, Y. Sadki, A. A. Haghighirad, A. I. Coldea","doi":"10.1038/s41535-024-00663-1","DOIUrl":"https://doi.org/10.1038/s41535-024-00663-1","url":null,"abstract":"Superconductivity of iron chalocogenides is strongly enhanced under applied pressure yet its underlying pairing mechanism remains elusive. Here, we present a quantum oscillations study up to 45 T in the high-Tc phase of tetragonal FeSe0.82S0.18 up to 22 kbar. Under applied pressure, the quasi-two-dimensional multi-band Fermi surface expands and the effective masses remain large, whereas the superconductivity displays a threefold enhancement. Comparing with chemical pressure tuning of FeSe1−xSx, the Fermi surface expands in a similar manner but the effective masses and Tc are suppressed. These differences may be attributed to the changes in the density of states influenced by the chalcogen height, which could promote stronger spin fluctuations pairing under pressure. Furthermore, our study also reveals unusual scattering and broadening of superconducting transitions in the high-pressure phase, indicating the presence of a complex pairing mechanism.","PeriodicalId":19283,"journal":{"name":"npj Quantum Materials","volume":"13 1","pages":""},"PeriodicalIF":5.7,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141561199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Phonon-mediated spin transport in quantum paraelectric metals 量子准电金属中声子介导的自旋输运

IF 5.7 1区物理与天体物理

npj Quantum Materials Pub Date : 2024-07-04 DOI: 10.1038/s41535-024-00662-2

Kyoung-Min Kim, Suk Bum Chung

{"title":"Phonon-mediated spin transport in quantum paraelectric metals","authors":"Kyoung-Min Kim, Suk Bum Chung","doi":"10.1038/s41535-024-00662-2","DOIUrl":"https://doi.org/10.1038/s41535-024-00662-2","url":null,"abstract":"The concept of ferroelectricity is now often extended to include continuous inversion symmetry-breaking transitions in various metals and doped semiconductors. Paraelectric metals near ferroelectric quantum criticality, which we term ‘quantum paraelectric metals,’ possess soft transverse optical phonons which can have Rashba-type coupling to itinerant electrons in the presence of spin-orbit coupling. We find through the Kubo formula calculation that such Rashba electron-phonon coupling has a profound impact on electron spin transport. While the spin Hall effect arising from non-trivial electronic band structures has been studied extensively, we find here the presence of the Rashba electron-phonon coupling can give rise to spin current, including spin Hall current, in response to an inhomogeneous electric field even with a completely trivial band structure. Furthermore, this spin conductivity displays unconventional characteristics, such as quadrupolar symmetry associated with the wave vector of the electric field and a thermal activation behavior characterized by scaling laws dependent on the phonon frequency to temperature ratio. These findings shed light on exotic electronic transport phenomena originating from ferroelectric quantum criticality, highlighting the intricate interplay of charge and spin degrees of freedom.","PeriodicalId":19283,"journal":{"name":"npj Quantum Materials","volume":"133 1","pages":""},"PeriodicalIF":5.7,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141521458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electrical detection of mobile skyrmions with 100% tunneling magnetoresistance in a racetrack-like device 在类似赛道的装置中利用 100% 隧道磁阻对移动天体进行电学检测

IF 5.7 1区物理与天体物理

npj Quantum Materials Pub Date : 2024-06-14 DOI: 10.1038/s41535-024-00655-1

Mengqi Zhao, Aitian Chen, Pei-Yuan Huang, Chen Liu, Laichuan Shen, Jiahao Liu, Le Zhao, Bin Fang, Wen-Cheng Yue, Dongxing Zheng, Ledong Wang, Hao Bai, Ka Shen, Yan Zhou, Shasha Wang, Enlong Liu, Shikun He, Yong-Lei Wang, Xixiang Zhang, Wanjun Jiang

{"title":"Electrical detection of mobile skyrmions with 100% tunneling magnetoresistance in a racetrack-like device","authors":"Mengqi Zhao, Aitian Chen, Pei-Yuan Huang, Chen Liu, Laichuan Shen, Jiahao Liu, Le Zhao, Bin Fang, Wen-Cheng Yue, Dongxing Zheng, Ledong Wang, Hao Bai, Ka Shen, Yan Zhou, Shasha Wang, Enlong Liu, Shikun He, Yong-Lei Wang, Xixiang Zhang, Wanjun Jiang","doi":"10.1038/s41535-024-00655-1","DOIUrl":"https://doi.org/10.1038/s41535-024-00655-1","url":null,"abstract":"Magnetic skyrmions are topological spin textures that are regarded as promising information carriers for next-generation spintronic memory and computing devices. For practical applications, their deterministic generation, manipulation, and efficient detection are the most critical aspects. Although the generation and manipulation of skyrmions have been extensively studied, efficient electrical detection of mobile skyrmions by using techniques that are compatible with modern magnetic memory technology, remains to be adequately addressed. Here, through integrating magnetic multilayers that host nanoscale skyrmions, together with the magnetic tunnel junctions (MTJ), we demonstrate the electrical detection of skyrmions by using the tunneling magnetoresistance (TMR) effect with a TMR ratio that reaches over 100% at room temperature. By building prototype three-terminal racetrack-like devices, we further show the electrical detection of mobile skyrmions by recording the time-dependent TMR ratios. Along with many recent developments, our results could advance the development of skyrmionic memory and logic devices.","PeriodicalId":19283,"journal":{"name":"npj Quantum Materials","volume":"1 1","pages":""},"PeriodicalIF":5.7,"publicationDate":"2024-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141319785","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Emergence of antiferromagnetic correlations and Kondolike features in a model for infinite layer nickelates 无穷层镍酸盐模型中出现的反铁磁关联和 Kondolike 特征

IF 5.7 1区物理与天体物理

npj Quantum Materials Pub Date : 2024-06-06 DOI: 10.1038/s41535-024-00659-x

Fangze Liu, Cheng Peng, Edwin W. Huang, Brian Moritz, Chunjing Jia, Thomas P. Devereaux

引用次数: 0

Cubic double perovskites host noncoplanar spin textures 立方双包晶石承载非共面自旋纹理

IF 5.7 1区物理与天体物理

npj Quantum Materials Pub Date : 2024-06-06 DOI: 10.1038/s41535-024-00650-6

Joseph A. M. Paddison, Hao Zhang, Jiaqiang Yan, Matthew J. Cliffe, Michael A. McGuire, Seung-Hwan Do, Shang Gao, Matthew B. Stone, David Dahlbom, Kipton Barros, Cristian D. Batista, Andrew D. Christianson

{"title":"Cubic double perovskites host noncoplanar spin textures","authors":"Joseph A. M. Paddison, Hao Zhang, Jiaqiang Yan, Matthew J. Cliffe, Michael A. McGuire, Seung-Hwan Do, Shang Gao, Matthew B. Stone, David Dahlbom, Kipton Barros, Cristian D. Batista, Andrew D. Christianson","doi":"10.1038/s41535-024-00650-6","DOIUrl":"https://doi.org/10.1038/s41535-024-00650-6","url":null,"abstract":"Magnetic materials with noncoplanar magnetic structures can show unusual physical properties driven by nontrivial topology. Topologically-active states are often multi-q structures, which are challenging to stabilize in models and to identify in materials. Here, we use inelastic neutron-scattering experiments to show that the insulating double perovskites Ba2YRuO6 and Ba2LuRuO6 host a noncoplanar 3-q structure on the face-centered cubic lattice. Quantitative analysis of our neutron-scattering data reveals that these 3-q states are stabilized by biquadratic interactions. Our study identifies double perovskites as a highly promising class of materials to realize topological magnetism, elucidates the stabilization mechanism of the 3-q state in these materials, and establishes neutron spectroscopy on powder samples as a valuable technique to distinguish multi-q from single-q states, facilitating the discovery of topologically-nontrivial magnetic materials.","PeriodicalId":19283,"journal":{"name":"npj Quantum Materials","volume":"70 1","pages":""},"PeriodicalIF":5.7,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141264803","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Atomic-scale visualization of a cascade of magnetic orders in the layered antiferromagnet GdTe3 层状反铁磁体 GdTe3 磁序级联的原子尺度可视化

IF 5.7 1区物理与天体物理

npj Quantum Materials Pub Date : 2024-06-01 DOI: 10.1038/s41535-024-00660-4

Arjun Raghavan, Marisa Romanelli, Julian May-Mann, Anuva Aishwarya, Leena Aggarwal, Anisha G. Singh, Maja D. Bachmann, Leslie M. Schoop, Eduardo Fradkin, Ian R. Fisher, Vidya Madhavan

引用次数: 0

The nematic susceptibility of the ferroquadrupolar metal TmAg2 measured via the elastocaloric effect 通过弹性焦化效应测量铁四极金属 TmAg2 的向列磁感应强度

IF 5.7 1区物理与天体物理

npj Quantum Materials Pub Date : 2024-05-29 DOI: 10.1038/s41535-024-00658-y

Elliott W. Rosenberg, Matthias Ikeda, Ian R. Fisher

引用次数: 0

Lattice-commensurate skyrmion texture in a centrosymmetric breathing kagome magnet 中心对称呼吸式卡戈米磁体中与晶格相称的天磁纹理

IF 5.7 1区物理与天体物理

npj Quantum Materials Pub Date : 2024-05-23 DOI: 10.1038/s41535-024-00654-2

Max Hirschberger, Bertalan G. Szigeti, Mamoun Hemmida, Moritz M. Hirschmann, Sebastian Esser, Hiroyuki Ohsumi, Yoshikazu Tanaka, Leonie Spitz, Shang Gao, Kamil K. Kolincio, Hajime Sagayama, Hironori Nakao, Yuichi Yamasaki, László Forró, Hans-Albrecht Krug von Nidda, Istvan Kezsmarki, Taka-hisa Arima, Yoshinori Tokura

{"title":"Lattice-commensurate skyrmion texture in a centrosymmetric breathing kagome magnet","authors":"Max Hirschberger, Bertalan G. Szigeti, Mamoun Hemmida, Moritz M. Hirschmann, Sebastian Esser, Hiroyuki Ohsumi, Yoshikazu Tanaka, Leonie Spitz, Shang Gao, Kamil K. Kolincio, Hajime Sagayama, Hironori Nakao, Yuichi Yamasaki, László Forró, Hans-Albrecht Krug von Nidda, Istvan Kezsmarki, Taka-hisa Arima, Yoshinori Tokura","doi":"10.1038/s41535-024-00654-2","DOIUrl":"https://doi.org/10.1038/s41535-024-00654-2","url":null,"abstract":"Skyrmion lattices (SkL) in centrosymmetric materials typically have a magnetic period on the nanometer-scale, so that the coupling between magnetic superstructures and the underlying crystal lattice cannot be neglected. We reveal the commensurate locking of a SkL to the atomic lattice in Gd3Ru4Al12 via high-resolution resonant elastic x-ray scattering (REXS). Weak easy-plane magnetic anisotropy, demonstrated here by a combination of ferromagnetic resonance and REXS, penalizes placing a skyrmion core on a site of the atomic lattice. Under these conditions, a commensurate SkL, locked to the crystal lattice, is stable at finite temperatures – but gives way to a competing incommensurate ground state upon cooling. We discuss the role of Umklapp-terms in the Hamiltonian for the formation of this lattice-locked state, its magnetic space group, and the role of slight discommensurations, or (line) defects in the magnetic texture. We also contrast our findings with the case of SkLs in noncentrosymmetric material platforms.","PeriodicalId":19283,"journal":{"name":"npj Quantum Materials","volume":"75 1","pages":""},"PeriodicalIF":5.7,"publicationDate":"2024-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141085334","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electric-field-induced crystallization of Hf0.5Zr0.5O2 thin film based on phase-field modeling 基于相场建模的电场诱导 Hf0.5Zr0.5O2 薄膜结晶

IF 5.7 1区物理与天体物理

npj Quantum Materials Pub Date : 2024-05-23 DOI: 10.1038/s41535-024-00652-4

Zhaobo Liu, Xiaoming Shi, Jing Wang, Houbing Huang

{"title":"Electric-field-induced crystallization of Hf0.5Zr0.5O2 thin film based on phase-field modeling","authors":"Zhaobo Liu, Xiaoming Shi, Jing Wang, Houbing Huang","doi":"10.1038/s41535-024-00652-4","DOIUrl":"https://doi.org/10.1038/s41535-024-00652-4","url":null,"abstract":"Ferroelectricity in crystalline hafnium oxide has attracted considerable attention because of its potential application for memory devices. A recent breakthrough involves electric-field-induced crystallization, allowing HfO2-based materials to avoid high-temperature crystallization, which is unexpected in the back-end-of-line process. However, due to the lack of clarity in understanding the mechanisms during the crystallization process, we aim to employ theoretical methods for simulation, to guide experimental endeavors. In this work, we extended our phase-field model by coupling the crystallization model and time-dependent Ginzburg-Landau equation to analyze the crystalline properties and the polarization evolution of Hf0.5Zr0.5O2 thin film under applying an electric field periodic pulse. Through this approach, we found a wake-up effect during the process of crystallization and a transformation from orthorhombic nano-domains to the stripe domain. Furthermore, we have proposed an innovative artificial neural synapse concept based on the continuous polarization variation under applied electric field pulses. Our research lays the theoretical groundwork for the advancement of electric-field-induced crystallization in the hafnium oxide system.","PeriodicalId":19283,"journal":{"name":"npj Quantum Materials","volume":"41 1","pages":""},"PeriodicalIF":5.7,"publicationDate":"2024-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141085409","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Higher order exchange driven noncoplanar magnetic state and large anomalous Hall effects in electron doped kagome magnet Mn3Sn 电子掺杂神目磁体 Mn3Sn 中的高阶交换驱动非共面磁态和大反常霍尔效应

IF 5.7 1区物理与天体物理

npj Quantum Materials Pub Date : 2024-05-22 DOI: 10.1038/s41535-024-00657-z

Charanpreet Singh, Sk Jamaluddin, Subhadip Pradhan, Ashis K. Nandy, Masashi Tokunaga, Maxim Avdeev, Ajaya K. Nayak

{"title":"Higher order exchange driven noncoplanar magnetic state and large anomalous Hall effects in electron doped kagome magnet Mn3Sn","authors":"Charanpreet Singh, Sk Jamaluddin, Subhadip Pradhan, Ashis K. Nandy, Masashi Tokunaga, Maxim Avdeev, Ajaya K. Nayak","doi":"10.1038/s41535-024-00657-z","DOIUrl":"https://doi.org/10.1038/s41535-024-00657-z","url":null,"abstract":"Owing to geometrical frustration in the kagome lattice, Mn3Sn displays a 120° in-plane triangular antiferromagnetic order, a manifestation of exchange interaction within the Heisenberg model. Here, we show the formation of a tunable noncoplanar magnetic ground state stabilized by higher-order exchange interactions in electron-doped Mn3Sn samples. Our density Functional Theory calculations reveal that the higher-order exchange induces a partial out-of-plane alignment of the Mn moments, resulting in a canted magnetic state, further experimentally confirmed by neutron diffraction study along with 60 T magnetic and Hall resistivity measurements. Interestingly, we find a large scalar spin chirality-induced Hall signal depending on the degree of non-coplanarity of the Mn moments. Additionally, we demonstrate simultaneous manipulation of two-component order-parameter in the system, where the two Hall signals can be independently manipulated. The present study explores the quantum phenomena associated with the coexistence of multiple magnetic orders and their prospective use in spintronic devices.","PeriodicalId":19283,"journal":{"name":"npj Quantum Materials","volume":"28 1","pages":""},"PeriodicalIF":5.7,"publicationDate":"2024-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141085310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0