Article
Materials Science, Multidisciplinary
R. Waite, F. Orlandi, D. A. Sokolov, R. A. Ribeiro, P. C. Canfield, P. Manuel, D. D. Khalyavin, C. W. Hicks, S. M. Hayden
Summary: The tetragonal heavy-fermion compound CeAuSb2 undergoes a first-order transition to a spin-density wave (SDW) state under uniaxial stress, resulting in a change in the magnetic structure and a loss of spatial inversion in the metallic system.
Article
Materials Science, Multidisciplinary
Yuki Yanagi, Hiroaki Kusunose, Takuya Nomoto, Ryotaro Arita, Michi-To Suzuki
Summary: We propose a systematic method for generating symmetry-adapted magnetic structures to analyze complex modulated magnetic structures. The method extends the generation scheme based on multipole expansion, which was previously only applicable for k = 0. By mapping the multipole magnetic alignments to the periodic crystal structure with the phase factor for wave vector k, symmetry-adapted magnetic structures with ordering vector k can be obtained. This method provides all magnetic bases compatible with irreducible representations under a k group for a given crystal structure and wave vector k.
Article
Physics, Multidisciplinary
Noriki Terada, Dmitry D. Khalyavin, Pascal Manuel, Fabio Orlandi, Christopher J. Ridley, Craig L. Bull, Ryota Ono, Igor Solovyev, Takashi Naka, Dharmalingam Prabhakaran, Andrew T. Boothroyd
Summary: According to previous theoretical work, researchers have discovered that the binary oxide CuO can become a room-temperature multiferroic material by applying pressure. They confirmed this by neutron diffraction, showing that the multiferroic phase in CuO can reach 295 K with the application of 18.5 GPa pressure. They also developed a spin Hamiltonian based on density functional theory and employing superexchange theory, which was able to reproduce the experimental results. This study provides stimulus for developing room-temperature multiferroic materials using alternative methods, such as epitaxial strain, based on existing low temperature compounds, for tunable multifunctional devices and memory applications.
PHYSICAL REVIEW LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Noriki Terada, Tomohito Nakano, Claire Colin, Anne Stunault, Navid Qureshi, Bachir Ouladdiaf, Hirohiko Sato
Summary: The ferroelectricity and magnetic ordering of multiferroic orthorhombic perovskite YMnO3 were studied, revealing the ferroelectric polarization, magnetic structure, and collinear E-type ordering in the low-temperature ferroelectric phase. Experimental results indicated a single collinear E-type structure with small incommensurability as the magnetic ground state of YMnO3.
Review
Biochemistry & Molecular Biology
William T. Heller
Summary: SANS is a powerful tool for studying biological and model lipid membranes, enabling details to be revealed. This article provides an overview of its application for studying lipid bilayer vesicles, the advantages of selective deuteration and contrast variation methods, and approaches to modeling SANS data.
Article
Materials Science, Multidisciplinary
Hiroyuki Yamase, Muhammad Zafur
Summary: The study focuses on the longitudinal spin susceptibility within a magnetically ordered phase, where a superconducting instability leads to the coexistence of the two ordered phases. It is found that a linear term in the superconducting gap in a magnetic field applied along the direction of the magnetic moment causes a jump in the longitudinal spin susceptibility during a continuous phase transition at the superconducting instability. This anomaly is a thermodynamic signature of the microscopic coexistence of superconductivity and magnetism, and may be a general feature associated with the breaking of spin rotational symmetry within the magnetic phase.
Article
Physics, Multidisciplinary
Dan Sun, Dmitry A. Sokolov, Richard Waite, Seunghyun Khim, Pascal Manuel, Fabio Orlandi, Dmitry D. Khalyavin, Andrew P. Mackenzie, Clifford W. Hicks
Summary: The response of the 120-degree antiferromagnet state on a triangular lattice to lifting the triangular symmetry was investigated in PdCrO2 under uniaxial stress. It was found that the magnetic order's periodicity changes rapidly with applied stress, with magnetic anisotropy being roughly forty times the stress-induced bond length anisotropy. The magnetic structure undergoes a first-order transition at a compressive stress of around 0.4 GPa, switching from a double-to a single-q structure for interlayer ordering.
NEW JOURNAL OF PHYSICS
(2021)
Article
Physics, Applied
Xiaolin Li, Xu Liu, Hang Li, Ying-Qi Lue, Cunxu Gao
Summary: In this study, single-crystalline ultrathin Cu films with roughness as low as 1 nm were successfully obtained on the insulating substrate of SrTiO3(001) by studying the growth of 5-nm-thick Cu films. High crystalline quality α-FeMn films with smooth surface were subsequently obtained, and their antiferromagnetism was verified. The results of this study are of great significance for the experimental exploration of the fascinating properties of α-FeMn.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Physics, Multidisciplinary
M. A. Semkin, N. Urusova, A. Beskrovnyi, A. S. Volegov, A. P. Nosov, J-G Park, S. Lee, A. N. Pirogov
Summary: The heat capacity and neutron diffraction of LiNiPO4, LiNi0.9Mn0.1PO4, and LiNi0.9Co0.1PO4 single crystals were studied. First and second order phase transitions were observed in LiNiPO4 and LiNi0.9Co0.1PO4, while the magnetic phase transition in LiNi0.9Mn0.1PO4 was more complex.
Article
Chemistry, Physical
Erika Michela Dematteis, Jussara Barale, Giovanni Capurso, Stefano Deledda, Magnus H. Sorby, Fermin Cuevas, Michel Latroche, Marcello Baricco
Summary: Hydrogen, an efficient energy carrier produced from renewable sources, plays a vital role in the transition towards CO2-free energy. This study focuses on Ti-rich Ti(Fe,Mn)0.90 alloys and their deuterides, determining their crystal structure and analyzing the influence of Mn substitution on structural properties during reversible deuterium loading. The research provides valuable insights into hydrogen storage, structural knowledge, and the application of TiFe-type alloys in integrated hydrogen tank for energy storage systems.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Physics, Multidisciplinary
Ankush Pal, Devang Khakhar, Debes Ray, Vinod K. Aswal
Summary: Small-angle neutron scattering (SANS) was used to measure the bilayer thickness of SOPC lipid liposomes of different sizes. The results showed a slight reduction in bilayer thickness as liposome size increased. A model was developed to estimate the bilayer thickness based on liposome diameter, and it showed a small decrease in thickness as liposome size increased. The addition of ethanol to liposome suspensions also resulted in a decrease in bilayer thickness, with a reduction of 12%-15% at a concentration of 20 vol% ethanol.
Article
Materials Science, Multidisciplinary
Erik Wagner, Wolfram Brenig
Summary: In this study, a series expansion starting from the fully dimerized limit is performed on a bilayer of Kitaev magnets, revealing a rich structure of two-triplon scattering-state continua and several collective two-triplon (anti)bound states. Experimental probe shows a strong sensitivity of the magnetic Raman-scattering intensity on the two-triplon interactions and the scattering geometry, with the (anti)bound states only appearing in close proximity to the continuum.
Article
Physics, Nuclear
E. Khan
Summary: Generalized formula is provided to calculate the M-n/M-p ratio of multipole transition matrix elements, taking into account the difference between neutron and proton radii and diffuseness. Validity of the original Bernstein formula is limited for neutron-rich nuclei or when electromagnetic deformation parameter is larger than proton scattering parameter. Reduction in statistical error bars and study of neutron-rich nuclei would favor the use of generalized Bernstein formula.
Article
Chemistry, Physical
Simone Fabbrici, Francesco Cugini, Fabio Orlandi, Nicola Sarzi Amade, Francesca Casoli, Davide Calestani, Riccardo Cabassi, Greta Cavazzini, Lara Righi, Massimo Solzi, Franca Albertini
Summary: This study investigates the Curie transition of austenitic Ni-Mn-In full Heusler compounds by replacing Mn atoms with Fe or Cu. It is found that Fe and Cu modify the magnetic moments and interactions, resulting in changes in the Curie temperature and saturation magnetization of the compound. The study successfully synthesizes quinary compounds with tunable Curie temperature and high saturation magnetization, highlighting a promising strategy for designing regenerators for room temperature magnetocaloric applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Physics, Condensed Matter
V. Yu. Irkhin, Yu. N. Skryabin
Summary: This article introduces an exotic fractionalized Fermi-liquid theory that combines resonant-valence-bond state and the band of current carriers, and applies it to spin-liquid, antiferromagnetic, and nearly antiferromagnetic systems. Topological aspects, including the formation of small Fermi surfaces, are discussed. In the case of strong correlations, the ground state is considered as a direct product of resonant-valence-bond and fermion states. Examples of various systems and their analogies with copper-oxide systems are discussed.
PHYSICA B-CONDENSED MATTER
(2022)
Article
Chemistry, Multidisciplinary
Farhan Islam, Yongbin Lee, Daniel M. M. Pajerowski, JinSu Oh, Wei Tian, Lin Zhou, Jiaqiang Yan, Liqin Ke, Robert J. J. McQueeney, David Vaknin
Summary: Magnetic defects play a crucial role in magnetic topological insulators, influencing both the surface transport and bulk magnetic properties. In Bi2Se3-based dilute ferromagnetic (FM) TIs and MnBi2Te4-based antiferromagnetic (AFM) TIs, magnetic defects control the behavior. In Sb2Te3, a fraction of the Mn defects form strong AFM dimer singlets within a quintuple block, while in Sb1-xMnxTe3, the FM correlations are likely driven by magnetic defects in adjacent quintuple blocks.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Jonas Ruby Sandemann, Thomas Bjorn Egede Gronbech, Kristoffer Andreas Holm Stockler, Feng Ye, Bryan C. Chakoumakos, Bo Brummerstedt Iversen
Summary: ZnFe2O4 exhibits spin-glass transition and has dominant ferromagnetic and antiferromagnetic correlations. The 3D-m Delta PDF method is used to visualize the local magnetic ordering preferences.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Pousali Ghosh, Jiasen Guo, Feng Ye, Thomas Heitmann, Steven Kelley, Arthur Ernst, Vitalii Dugaev, Deepak K. K. Singh
Summary: This study investigates the potential of NiSi metal in high-temperature antiferromagnetic spintronics. It reveals high-temperature antiferromagnetism in single-crystal NiSi with a Neel temperature above 700 K. The antiferromagnetic order in NiSi has non-centrosymmetric magnetic character and a small ferromagnetic component in the a-c plane. Furthermore, NiSi exhibits different magnetic and electronic hysteresis responses to field applications due to the disparity in two moment directions, and these switching behaviors persist to high temperature. These findings highlight the importance of NiSi in the pursuit of antiferromagnetic spintronics.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Qiang Zhang, Wei Tian, Roshan Nepal, Ashfia Huq, Stephen Nagler, J. F. DiTusa, Rongying Jin
Summary: In this study, the relationship between the structure and magnetic transitions in FeMn2O4 is investigated by high-resolution neutron powder diffraction. It is found that FeMn2O4 undergoes a structural transition from a cubic phase to a tetragonal phase at around 750K, driven by the Jahn-Teller effect of the B-site Mn3+ ions. Another magnetic transition and structural distortion occur at around 400K, accompanied by changes in lattice constants. At 65K, a noncollinear ferrimagnetic order is observed with different moments at the B1 and B2 magnetic sites. The A-site and B-site magnetic cations play distinct roles in the structural and magnetic properties of FeMn2O4. This study demonstrates that FeMn2O4 is an excellent platform to study interesting magnetic orders and their correlations with polyhedral distortions and lattice.
CHEMISTRY OF MATERIALS
(2023)
Article
Physics, Condensed Matter
J. M. Wilde, A. Sapkota, Q-P Ding, M. Xu, W. Tian, S. L. Bud'ko, Y. Furukawa, A. Kreyssig, P. C. Canfield
Summary: The magnetic order of Mn-doped CaK(Fe1-xMnx)(4)As-4 compounds is consistent with the hedgehog spin vortex crystal (hSVC) order found in Ni-doped CaKFe4As4. The hSVC state is characterized by stripe-type propagation vectors and simple antiferromagnetic stacking. The hSVC state in Mn-doped 1144 compound coexists with superconductivity and shows a quantum phase transition associated with the suppression of the AFM transition temperature.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2023)
Article
Multidisciplinary Sciences
Bin Gao, Tong Chen, Xiao-Chuan Wu, Michael Flynn, Chunruo Duan, Lebing Chen, Chien-Lung Huang, Jesse Liebman, Shuyi Li, Feng Ye, Matthew B. Stone, Andrey Podlesnyak, Douglas L. Abernathy, Devashibhai T. Adroja, Manh Duc Le, Qingzhen Huang, Andriy H. Nevidomskyy, Emilia Morosan, Leon Balents, Pengcheng Dai
Summary: Magnetic order can still occur in materials with spin-singlet ground state due to exchange interactions mixing excited crystal electric field states. The study investigates Ni2Mo3O8 and finds that crystal electric field states in both the paramagnetic and antiferromagnetic states exhibit dispersive excitations.
NATURE COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Xiang Chen, Wei Tian, Yu He, Hongrui Zhang, Tyler L. Werner, Saul Lapidus, Jacob P. C. Ruff, Ramamoorthy Ramesh, Robert J. Birgeneau
Summary: The structural and magnetic properties of F5GT single crystals with minimal Fe deficiency were investigated using x-ray and neutron scattering techniques. It was found that the crystals undergo an irreversible, first-order transition at T_S≈110K upon first cooling, leading to a conversion of stacking order from ABC to AA. Importantly, the magnetic properties, including the direction of magnetic moment and the enhanced T_C after thermal cycling, are closely related to the change in stacking order. This work highlights the significant influence of lattice symmetry on the magnetism in F5GT.
PHYSICAL REVIEW MATERIALS
(2023)
Article
Chemistry, Physical
Nicholas J. Weadock, Tyler C. Hemamala, Julian A. Vigil, Aryeh Gold-Parker, Ian C. Smith, Ballal Ahammed, Matthew J. Krogstad, Feng Ye, David Voneshen, Peter M. Gehring, Andrew M. Rappe, Hans-Georg Steinrueck, Elif Ertekin, Hemamala I. Karunadasa, Dmitry Reznik, Michael F. Toney
Summary: This study determines the true structure of two hybrid lead-halide perovskites using single-crystal diffuse scattering, neutron inelastic spectroscopy, and molecular dynamics simulations. The research reveals a remarkable collective dynamics that induces longer-range intermolecular correlations and may increase charge carrier lifetimes and affect halide migration.
Article
Multidisciplinary Sciences
Nathan C. Drucker, Thanh Nguyen, Fei Han, Phum Siriviboon, Xi Luo, Nina Andrejevic, Ziming Zhu, Grigory Bednik, Quynh T. Nguyen, Zhantao Chen, Linh K. Nguyen, Tongtong Liu, Travis J. Williams, Matthew B. Stone, Alexander I. Kolesnikov, Songxue Chi, Jaime Fernandez-Baca, Christie S. Nelson, Ahmet Alatas, Tom Hogan, Alexander A. Puretzky, Shengxi Huang, Yue Yu, Mingda Li
Summary: The interplay between magnetism and electronic band topology enriches topological phases and has promising applications. Evidence for topology stabilized magnetism above the magnetic transition temperature in magnetic Weyl semimetal candidate CeAlGe was reported. This indicates the presence of locally correlated magnetism within a narrow temperature window well above the thermodynamic magnetic transition temperature and highlights the role of electronic band topology in stabilizing magnetic order even in the classically disordered regime.
NATURE COMMUNICATIONS
(2023)
Article
Physics, Multidisciplinary
Anjana M. Samarakoon, J. Strempfer, Junjie Zhang, Feng Ye, Yiming Qiu, J. -w. Kim, H. Zheng, S. Rosenkranz, M. R. Norman, J. F. Mitchell, D. Phelan
Summary: Quantum materials, especially low-dimensional ones, often exhibit competing or intertwining magnetic, electronic, and structural ordering phenomena. In the case of quasi-2D materials R4Ni3O10 (R = La, Pr), intertwined charge-and spin-density waves have been identified. However, for R = Pr, exchange coupling between the transition -metal and rare-earth sublattices leads to a dimensional crossover into a fully 3D-ordered and coupled SDW state, altering the structure of SDW on the Ni sublattice.
Article
Materials Science, Multidisciplinary
Keith M. Taddei, Bing-Hua Lei, Michael A. Susner, Hui-Fei Zhai, Thomas J. Bullard, Liurukara D. Sanjeewa, Qiang Zheng, Athena S. Sefat, Songxue Chi, Clarina dela Cruz, David J. Singh, Bing Lv
Summary: Majorana zero modes form as intrinsic defects in an odd-orbital one-dimensional superconductor, thus motivating the search for such materials in the pursuit of Majorana physics. We present experimental results and calculations suggesting that K2Cr3As3 is a quasi-one-dimensional superconductor with spin triplet behavior, making it a potential topological superconductor.
Article
Materials Science, Multidisciplinary
Mingfang Shu, Weicen Dong, Jinlong Jiao, Jiangtao Wu, Gaoting Lin, Yoshitomo Kamiya, Tao Hong, Huibo Cao, Masaaki Matsuda, Wei Tian, Songxue Chi, Zhongwen Ouyang, Hongwei Chen, Youming Zou, Zhe Qu, Qing Huang, Haidong Zhou, Jie Ma
Summary: In this study, we investigated the ground state and spin excitations in Ba3MnSb2O9, an easy-plane S = 5/2 triangular lattice antiferromagnet. Through various techniques including single-crystal neutron scattering, electric spin resonance, and spin wave calculations, we determined the spin Hamiltonian parameters describing the material. We found that Ba3MnSb2O9 is a nearly ideal triangular lattice antiferromagnet with quasiclassical spin S = 5/2, making it a potential candidate for the study of Z- or Z2-vortex excitations.
Article
Materials Science, Multidisciplinary
C. Dhital, R. L. Dally, R. Ruvalcaba, R. Gonzalez-Hernandez, J. Guerrero-Sanchez, H. B. Cao, Q. Zhang, W. Tian, Y. Wu, M. D. Frontzek, S. K. Karna, A. Meads, B. Wilson, R. Chapai, D. Graf, J. Bacsa, R. Jin, J. F. DiTusa
Summary: The magnetic structure, magnetoresistance, and Hall effect of the noncentrosymmetric magnetic semimetal NdAlGe are investigated. The study reveals an unusual magnetic state and anomalous transport properties that are associated with the electronic structure of the compound. The presence of Weyl nodes contributes to the large anomalous Hall conductivity.
Article
Physics, Multidisciplinary
Sachith E. Dissanayake, Masaaki Matsuda, Kazuyoshi Yoshimi, Shusuke Kasamatsu, Feng Ye, Songxue Chi, William Steinhardt, Gilberto Fabbris, Sara Haravifard, Jinguang Cheng, Jiaqiang Yan, Jun Gouchi, Yoshiya Uwatoko
Summary: MnP is a metal that exhibits paramagnetic, ferromagnetic, and helical magnetic phases, and shows superconductivity under high pressure. The magnetic transitions and quantum critical behavior play a crucial role in this material. Through experimental and theoretical calculations, the exchange interactions in the magnetic ground state adjacent to the superconducting phase have been elucidated, which is critical for understanding the pairing mechanism of unconventional superconductivity in MnP.
PHYSICAL REVIEW RESEARCH
(2023)
Article
Materials Science, Multidisciplinary
G. Gitgeatpong, Y. Zhao, J. A. Fernandez-Baca, T. Hong, T. J. Sato, P. Piyawongwatthana, K. Nawa, P. Saeaun, K. Matan
Summary: The magnetic properties of the antiferromagnet ZnxCu2-xV2O7 (ZnCVO) were thoroughly investigated. The study found similarities between ZnCVO and β-Cu2V2O7 (β-CVO) in terms of crystal structure and macroscopic magnetic properties. The spin network of ZnCVO was found to be better described by an anisotropic 2D spin network, different from the predicted 2D honeycomb structure.
