Article
Materials Science, Multidisciplinary
Kapil Motla, Arushi, P. K. Meena, D. Singh, P. K. Biswas, A. D. Hillier, R. P. Singh
Summary: High-entropy alloys (HEAs) are a unique platform for discovering superconducting materials and exploring exotic superconductivity. Despite the highly disordered nature of HEAs, the study found that the superconducting properties within them are regular.
Article
Materials Science, Multidisciplinary
P. -C. Ho, D. E. MacLaughlin, M. B. Maple, Lei Shu, A. D. Hillier, O. O. Bernal, T. Yanagisawa, P. K. Biswas, Jian Zhang, Cheng Tan, S. D. Hishida, T. McCullough-Hunter
Summary: The properties of the Pr-rich end of the alloy series Pr1-xNdxOs4Sb12 have been studied, revealing that the presence of Nd doping eliminates the magnetic field associated with time-reversal symmetry (TRS), and the restoration of TRS does not strongly affect the superconducting state.
Article
Physics, Applied
V. A. Shestakov, M. M. Korshunov, Yu N. Togushova, O. Dolgov
Summary: The study reveals that with the increase of nonmagnetic disorders, the unconventional s(+/-) state in iron-based superconductors may transform into the s(++) state, and specific signatures of this transition process exist.
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
(2021)
Review
Materials Science, Multidisciplinary
Z. Guguchia, R. Khasanov, H. Luetkens
Summary: Kagome lattices are intriguing and rich platforms for studying the intertwining of topology, electron correlation, and magnetism. In this review, recent experimental progress on superconductivity and magnetic fingerprints of charge order in kagome-lattice systems is discussed. The systems include AV(3)Sb(5), LaRu3Si2, and CeRu2, which exhibit unique properties such as time-reversal symmetry-breaking charge ordered state, unconventional superconductivity, and rare nodeless magnetic kagome superconductivity.
NPJ QUANTUM MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
K. Motla, P. K. Meena, Arushi, D. Singh, P. K. Biswas, A. D. Hillier, R. P. Singh
Summary: Superconducting high entropy alloys exhibit bulk superconductivity, time-reversal symmetry, and superfluid density described by an isotropic s-wave model.
Article
Multidisciplinary Sciences
Hailong Wang, Shu Zhang, Nathan J. McLaughlin, Benedetta Flebus, Mengqi Huang, Yuxuan Xiao, Chuanpu Liu, Mingzhong Wu, Eric E. Fullerton, Yaroslav Tserkovnyak, Chunhui Rita Du
Summary: This study reports a noninvasive method to optically access the intrinsic spin transport properties of an antiferromagnetic insulator (α-Fe2O3) using nitrogen-vacancy (NV) quantum spin sensors. By measuring the dynamic fluctuations of spin density, an intrinsic spin diffusion constant of α-Fe2O3 is experimentally measured. This research highlights the importance of using NV centers for diagnosing high-frequency magnetic materials.
Article
Multidisciplinary Sciences
J. A. Wilcox, M. J. Grant, L. Malone, C. Putzke, D. Kaczorowski, T. Wolf, F. Hardy, C. Meingast, J. G. Analytis, J. -H. Chu, I. R. Fisher, A. Carrington
Summary: The authors observe the existence of non-linear Meissner effect in two unconventional nodal superconductors and demonstrate its use in distinguishing nodal and non-nodal characteristics.
NATURE COMMUNICATIONS
(2022)
Article
Physics, Multidisciplinary
Jia Yu, Tong Liu, BinBin Ruan, Kang Zhao, QingSong Yang, MengHu Zhou, ZhiAn Ren
Summary: The study investigates the evolution of superconductivity and magnetism in EuFeAs2 and Eu0.9Pr0.1FeAs2 through cobalt doping. Cobalt doping has little effect on the Eu-related antiferromagnetic transition in EuFeAs2, but rapidly decreases the Fe-related spin density wave transition temperature, while inducing superconductivity. In Eu0.9Pr0.1FeAs2, magnetism and superconductivity show similar evolutions upon cobalt doping, with the highest transition temperature reaching 30.6 K.
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
(2021)
Article
Materials Science, Multidisciplinary
K. P. Sajilesh, K. Motla, P. K. Meena, A. Kataria, C. Patra, K. Somesh, A. D. Hillier, R. P. Singh
Summary: Noncentrosymmetric materials are a promising avenue for studying unconventional superconductivity, with particular interest in Re-containing noncentrosymmetric materials that exhibit a superconducting state with time-reversal symmetry breaking. In this study, a comprehensive investigation of the superconducting ground state of NbReSi was conducted using magnetization, resistivity, and muon spin rotation/relaxation measurements. The results showed the preserved time-reversal symmetry below the superconducting transition temperature of 6.29(3) K, and confirmed the s-wave nature of the sample.
Article
Chemistry, Multidisciplinary
Erin S. Grant, Liam T. Hall, Lloyd C. L. Hollenberg, Gawain McColl, David A. Simpson
Summary: In this study, the magnetic properties of ferritin, the primary storage protein in the body, were systematically studied using diamond-based quantum spin relaxometry. An anomalous magnetic behavior was observed at relatively low iron loads due to a morphological change in the iron core of ferritin. The inclusion of this morphological change in a theoretical model was supported by electron microscopy studies and provided evidence for the magnetic consequence of the morphological change.
Article
Physics, Multidisciplinary
Z. H. Zhu, C. Tan, J. Zhang, P. K. Biswas, A. D. Hillier, M. X. Wang, Y. X. Yang, C. S. Chen, Z. F. Ding, S. Y. Li, L. Shu
Summary: Topological superconductivity is an exotic phenomenon characterized by the symmetry-protected topological surface state. This study investigates the time-reversal symmetry and gap symmetry of a topological noncentrosymmetric superconductor PbTaSe2 through muon spin relaxation/rotation experiments. The results reveal the absence of internal magnetic field in the superconducting state and a fully-gapped isotropic three-dimensional single-band gap. These findings contribute to the understanding of the pairing mechanism and classification of topological superconductivity in this system.
NEW JOURNAL OF PHYSICS
(2022)
Article
Multidisciplinary Sciences
C. Mielke, D. Das, J-X Yin, H. Liu, R. Gupta, Y-X Jiang, M. Medarde, X. Wu, H. C. Lei, J. Chang, Pengcheng Dai, Q. Si, H. Miao, R. Thomale, T. Neupert, Y. Shi, R. Khasanov, M. Z. Hasan, H. Luetkens, Z. Guguchia
Summary: The kagome lattice is a prominent structural motif in quantum physics that can host diverse quantum phases. Recent studies have shown that kagome superconductors exhibit unconventional chiral charge order, but direct evidence for time-reversal symmetry breaking is still lacking. Using muon spin relaxation, we observed an enhancement of the internal field width below the charge ordering temperature in KV3Sb5, indicating the presence of time-reversal symmetry-breaking charge order intertwining with unconventional superconductivity.
Article
Physics, Particles & Fields
Roberto Franceschini, Xiaoran Zhao
Summary: Dark Matter is a necessary ingredient for a complete theory of Nature, but it has been elusive in laboratory searches for new particles. Current and future colliders are a promising way to search for electroweak charged dark matter particles, but they fall short in sensitivity. This research shows that a high-energy muon collider could probe the whole allowed mass range for WIMP dark matter.
EUROPEAN PHYSICAL JOURNAL C
(2023)
Article
Physics, Applied
Rustem Khasanov
Summary: Pressure is an important parameter that can alter the properties of matter, and muon-spin rotation/relaxation (mu SR) experiments can be used to study the magnetic and superconducting responses of materials under extreme conditions.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Physics, Condensed Matter
Namrata Gurung, Chennan Wang, Nicholas S. Bingham, Joel A. T. Verezhak, Kazunari Yamaura, Giuseppe Allodi, Paola Caterina Forino, Samuele Sanna, Hubertus Luetkens, V Scagnoli
Summary: Using muon spin rotation and relaxation (μSR) and Na-23 nuclear magnetic resonance (NMR) spectroscopic methods, we investigated the temperature evolution of magnetic order parameters in the NaOsO3 antiferromagnetic phase, as well as the role of magnetic fluctuations at the Neel temperature. Our results suggest that anomalies in electrical resistivity near 30 K may be attributed to a reduction in Os magnetic moment associated with spin fluctuations, with no significant changes in spin fluctuations frequency or localized Os magnetic moment below 50 K.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2021)
Article
Physics, Multidisciplinary
Ningning Wang, Yuhao Gu, M. A. McGuire, Jiaqiang Yan, Lifen Shi, Qi Cui, Keyu Chen, Yuxin Wang, Hua Zhang, Huaixin Yang, Xiaoli Dong, Kun Jiang, Jiangping Hu, Bosen Wang, Jianping Sun, Jinguang Cheng
Summary: This study reports on the synthesis, structure, and physical properties of a bilayer kagome lattice compound V3Sb2. It was found that V3Sb2 undergoes a density-wave-like transition at T(dw) approximately 160 K. The study also revealed that V3Sb2 exhibits non-trivial topological crystalline properties.
Article
Materials Science, Multidisciplinary
Jun Cui, John Ormerod, David Parker, Ryan Ott, Andriy Palasyuk, Scott Mccall, M. Parans Paranthaman, Michael S. Kesler, Michael A. McGuire, Ikenna C. Nlebedim, Chaochao Pan, Thomas Lograsso
Summary: Permanent magnets using rare earth elements are crucial in electrical machines, but their scarcity poses a constraint. Improvements in manufacturing process can help alleviate the rare earth criticality issue.
Article
Materials Science, Multidisciplinary
Jun Cui, John Ormerod, David S. Parker, Ryan Ott, Andriy Palasyuk, Scott McCall, Mariappan Parans Paranthaman, Michael S. Kesler, Michael A. McGuire, Cajetan Nlebedim, Chaochao Pan, Thomas Lograsso
Summary: This article reviews the conventional manufacturing processes, bonding, emerging advanced manufacturing processes, and magnet recycling methods for permanent magnets, providing an overview of their current status, challenges, and future directions.
Article
Nanoscience & Nanotechnology
Hang Chen, Shahidul Asif, Kapildeb Dolui, Yang Wang, Jeyson Tamara-Isaza, V. M. L. Durga Prasad Goli, Matthew Whalen, Xinhao Wang, Zhijie Chen, Huiqin Zhang, Kai Liu, Deep Jariwala, M. Benjamin Jungfleisch, Chitraleema Chakraborty, Andrew F. May, Michael A. McGuire, Branislav K. Nikolic, John Q. Xiao, Mark J. H. Ku
Summary: The study reports on exfoliated flakes of cobalt-substituted Fe5GeTe2 (CFGT) that exhibit magnetism above room temperature. Ferromagnetism at room temperature was observed in CFGT flakes as thin as 16 nm using quantum magnetic imaging. This expands the portfolio of thin room temperature 2D magnet flakes exfoliated from robust single crystals.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Physics, Multidisciplinary
Hasitha W. Suriya Arachchige, William R. Meier, Madalynn Marshall, Takahiro Matsuoka, Rui Xue, Michael A. McGuire, Raphael P. Hermann, Huibo Cao, David Mandrus
Summary: Stacked vanadium kagome layers in AV(3)Sb(5) compounds have been found to exhibit unusual charge density waves. In this study, a different charge density wave phenomenon is observed in ScV6Sn6, offering further opportunities to explore density wave order in kagome lattice materials.
PHYSICAL REVIEW LETTERS
(2022)
Article
Materials Science, Multidisciplinary
J. -q. Yan, M. A. McGuire
Summary: This paper introduces a less well-known vapor transport technique called self-selecting vapor growth, and reports on the growth of transition-metal halides using this technique. The research shows that the self-selecting vapor transport technique can provide large single crystals of transition-metal halides, demonstrating its potential for providing high-quality single crystals of quantum materials.
PHYSICAL REVIEW MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Jierui Liang, Shanchuan Liang, Ti Xie, Andrew F. May, Thomas Ersevim, Qinqin Wang, Hyobin Ahn, Changgu Lee, Xixiang Zhang, Jian-Ping Wang, Michael A. McGuire, Min Ouyang, Cheng Gong
Summary: Exchange bias in van der Waals (vdW) magnets is crucial for magnetoresistive logic and memory devices. We demonstrate a facile method to achieve strong exchange bias in Fe5GeTe2 through atomic layer deposition (ALD) of oxides. By depositing Al2O3, ZnO, and V2O5 on Fe5GeTe2, exchange biases of 300-1500 Oe were obtained at 130 K. We show that the duration of oxidant pulse in each ALD cycle and the oxidant used in the process play a key role in enhancing the exchange bias strength. Our work highlights the importance of ALD-enabled oxidization of Fe5GeTe2 and establishes ALD of oxides as a promising approach for creating giant exchange bias in vdW magnets.
PHYSICAL REVIEW MATERIALS
(2023)
Article
Crystallography
Michael A. A. McGuire, Eleanor M. M. Clements, Qiang Zhang, Satoshi Okamoto
Summary: This article investigates the properties of Pt3X2 (X = In and Tl), which adopt a double-layer kagome net structure related to topologically nontrivial compounds Fe3Sn2 and V3Sb2. Through various measurements and calculations, it is found that the Fermi levels of Pt3X2 lie in pseudogaps, and several bands contribute to transport. Despite the extended nature of the Pt 5d states, the observed moderately large and non-saturating magnetoresistance values and quantum oscillations suggest the presence of the kagome nets in Pt.
Article
Crystallography
Duncan H. H. Moseley, Craig A. A. Bridges, Luke L. L. Daemen, Qiang Zhang, Michael A. A. McGuire, Ercan Cakmak, Raphael P. Hermann
Summary: Antimony oxides are important for catalysis and flame-retardant applications. Although the lattice dynamics properties of alpha-Sb2O3 and beta-Sb2O3 have been extensively studied, their anharmonicity and low-temperature structural information have not been directly investigated. In this study, we report the powder neutron diffraction data and structural information of both phases, revealing a small region of zero thermal expansion in beta-Sb2O3 along the c axis and a deviation in atomic displacement parameters in alpha-Sb2O3. These findings provide valuable insights for further investigations.
Article
Materials Science, Multidisciplinary
Andrew F. May, Eleanor M. Clements, Heda Zhang, Raphael P. Hermann, Jiaqiang Yan, Michael A. McGuire
Summary: EuCuP and EuCuAs were studied to investigate their magnetic phase transitions and magnetoelastic coupling. EuCuP exhibited two closely spaced features in thermal expansion and specific heat capacity around the Curie temperature, possibly indicating a cascading magnetic transition or an electronic transition closely coupled to the magnetic ordering. Stronger zero-field magnetoelastic coupling was observed in EuCuP compared to EuCuAs, which was attributed to the dominant ferromagnetic interaction in EuCuP and antiferromagnetic order in EuCuAs. Anisotropic thermal expansion and strong ferromagnetic correlations were observed in EuCuAs above T-N. Both compounds showed similar electrical and thermoelectric transport behaviors, suggesting intrinsic defects and potential for achieving narrow-gap semiconducting or semimetallic behavior with defect tuning.
PHYSICAL REVIEW MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Michael A. McGuire, Heda Zhang, Andrew F. May, Satoshi Okamoto, Robert G. Moore, Xiaoping Wang, Clement Girod, Sean M. Thomas, Filip Ronning, Jiaqiang Yan
Summary: Alloying indium into SnBi2Te4 induces bulk superconductivity with critical temperatures up to 1.85 K and upper critical fields up to about 14 kOe. This is confirmed by electrical and thermal measurements, and the presence of a superconducting gap near 0.25 meV is suggested. The superconductivity is type-II and the existence of topological surface states has been verified. The analogy with MnBi2Te4 motivates further interest in this family of compounds, which have potential for the study of topological superconductivity.
PHYSICAL REVIEW MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Daniel Multer, Jia-Xin Yin, Md. Shafayat Hossain, Xian Yang, Brian C. Sales, Hu Miao, William R. Meier, Yu-Xiao Jiang, Yaofeng Xie, Pengcheng Dai, Jianpeng Liu, Hanbin Deng, Hechang Lei, Biao Lian, M. Zahid Hasan
Summary: Direct imaging and magnetic tuning of flat band localization in kagome materials is achieved through scanning tunneling microscopy and photoemission spectroscopy. This study provides crucial insights into the localization of flat band states.
COMMUNICATIONS MATERIALS
(2023)
Article
Physics, Multidisciplinary
Ling-Fang Lin, Yang Zhang, Gonzalo Alvarez, Michael A. McGuire, Andrew F. May, Adriana Moreo, Elbio Dagotto
Summary: The stability range of the ferromagnetic phase in iron oxychalcogenide chain system is studied under modifications in the crystal fields and electronic correlation strength, leading to the discovery of a rich emergence of phases including ferromagnetic and antiferromagnetic metallic states. The results demonstrate the capability of the interorbital hopping mechanism in stabilizing ferromagnetic insulators, providing insights for the design of new ferromagnetic insulator materials.
COMMUNICATIONS PHYSICS
(2023)
Article
Physics, Multidisciplinary
K. M. Taddei, V. O. Garlea, A. M. Samarakoon, L. D. Sanjeewa, J. Xing, T. W. Heitmann, C. dela Cruz, A. S. Sefat, D. Parker
Summary: Researchers have identified a potential candidate material, KNiAsO4, that may exhibit a spin-liquid ground state based on the Kitaev spin Hamiltonian. Experimental measurements show evidence of magnetic order and a gapped spin-wave spectrum, suggesting the presence of a well-defined spin-liquid state.
PHYSICAL REVIEW RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Liurukara D. Sanjeewa, V. Ovidiu Garlea, Randy S. Fishman, Mahsa Foroughian, Li Yin, Jie Xing, David S. Parker, Tiffany Smith M. Pellizzeri, Athena S. Sefat, Joseph W. Kolis
Summary: In this study, the magnetic phase diagram of the compound CsCo2(MoO4)2(OH) was determined through magnetic and neutron scattering measurements. The magnetic properties of CsCo2(MoO4)2(OH) are strongly influenced by the crystal lattice and can be easily controlled by magnetic fields. The compound exhibits unique magnetic exchange interactions between two types of Co2+ ions. The magnetic structure is antiferromagnetic along the b-axis at TN = 5 K, with two successive metamagnetic transitions observed. The compound shows promising potential for studying new physics related to sawtooth chain magnetism. Rating: 6/10.
MATERIALS CHEMISTRY FRONTIERS
(2023)
