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
Chemistry, Multidisciplinary
Xueying Liu, Chenhai Shen, Xueping Li, Tianxing Wang, Mengjie He, Lin Li, Ying Wang, Jingbo Li, Congxin Xia
Summary: Due to unique magnetoelectric coupling effects, two-dimensional multiferroic van der Waals heterostructures (vdWHs) show great potential for next-generation information processing and storage devices. By designing vdWHs with different stacking patterns, different band alignments and semiconductor transitions can be achieved, providing a possible route to realize nanoscale multifunctional spintronic devices.
Article
Materials Science, Multidisciplinary
C. Dhital, R. L. Dally, D. Pham, T. Keen, Q. Zhang, P. Siwakoti, R. Nepal, R. Jin, R. Rai
Summary: HoFeWO6, a polar magnetic oxide, exhibits a polar crystal structure where the Fe sublattice magnetic structure plays a crucial role in generating spontaneous polarization through magnetoelectric coupling.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2022)
Article
Materials Science, Ceramics
Lu Liu, Yehui Zhang, Xin Xin Shi, Xiao Qiang Liu, Xiao Li Zhu, Bin Xu, Xiang Ming Chen
Summary: This study obtained Bi0.86Sm0.14FeO3 ceramics with near Pna2(1) single-phase structure through a repeated longtime sintering process. The evolution of Pna2(1) symmetry, ferroelectric transition, and magnetoelectric coupling were determined, revealing a giant electric field-controlled magnetism effect. The results deepen the understanding of Pna2(1) phase and offer insights for enhancing electric field-controlled magnetism in RE-substituted BiFeO3 multiferroic ceramics.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Multidisciplinary
Li-Hua Yin, Gaochao Zhao, Peng Tong, Jie Yang, Xuebin Zhu, Wenhai Song, Yuping Sun
Summary: In this study, it was discovered that significant and reproducible control of magnetism with low electric fields can be achieved in BF-BKT single crystals near the morphotropic phase boundary. This control is mainly attributed to lattice distortion and phase transformation induced by the electric field, rather than ferroelectric domain switching.
Article
Materials Science, Multidisciplinary
S. Mansouri, M. Balli, S. Jandl, A. O. Suleiman, P. Fournier, M. Orlita, I. A. Zobkalo, S. N. Barilo, M. Chaker
Summary: The multiferroic and rotating magnetocaloric properties of Nd0.8Tb0.2Mn2O5 are investigated in this study. The results show changes in the structural units and the impact of Nd-Tb interaction on the magnetic and ferroelectric properties of the sample. The study also provides insights into the magnetocrystalline anisotropy and rotating magnetocaloric effect of Nd0.8Tb0.2Mn2O5.
Article
Physics, Multidisciplinary
Congbin Liu, Jinbing Cheng, Junbao He, Yongsheng Zhu, Wan Chang, Xiaoyu Lu, Junfeng Wang, Meiyan Cui, Jinshu Huang, Dawei Zhou, Rui Chen, Hao Jiang, Chuangchuang Ma, Chao Dong, Yongsong Luo
Summary: This study reports on the polarization reversal controlled by an electric field in multiferroic MnWO4, and the unique properties of this reversal phenomenon under high magnetic fields. Additionally, it is found that the ferroelectric phase IV can be modulated by applying a magnetic field approximated to the c axis.
Article
Chemistry, Physical
J. Zhang, J. C. Ma
Summary: Rare-earth orthoferrite SmFeO3 (SFO) is a promising single-phase multiferroic material with simultaneous magnetic and ferroelectric orders at room temperature. In this study, SFO thin films with different thicknesses were prepared using pulsed laser deposition method, and it was found that they exhibit significant room temperature ferromagnetism under compressive strain. The synchronous reversal of ferroelectric and induced ferromagnetic domains can be achieved by applying opposite polarization voltages.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Physics, Condensed Matter
S. Rayaprol, K. K. Iyer, A. Hoser, M. Reehuis, A. Morozkin, V Siruguri, K. Maiti, E. Sampathkumaran
Summary: A compound containing Tb ions, Tb5Si3, with a honeycomb network of Tb ions, shows complete suppression of the features attributable to long-range magnetic ordering by a critical applied field, mimicking the behavior of Kitaev physics candidates.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2023)
Article
Materials Science, Multidisciplinary
J. F. Wang, W. X. Liu, Z. Z. He, C. B. Liu, M. Tokunaga, M. Li, C. Dong, X. T. Han, F. Herlach, C. L. Lu, Z. W. Ouyang, Z. C. Xia, K. Kindo, L. Li, M. Yang
Summary: This study on MnWO4 reveals that the direction of polarization of the high-field phase reverses when the magnetic field direction changes, attributed to a change in spin chirality. The control of the chiral plane through magnetic and electric fields is proposed as a potential mechanism for further investigation.
Article
Chemistry, Physical
R. Das, N. T. Dang, V Kalappattil, R. P. Madhogaria, D. P. Kozlenko, S. E. Kichanov, E. Lukin, A. Rutkaukas, T. P. T. Nguyen, L. T. P. Thao, N. S. Bingham, H. Srikanth, M. H. Phan
Summary: The structural and magnetic properties of quasi-one-dimensional spin-chain compounds Ca3Co2-xFexO6 were systematically studied, with Fe doping influencing the magnetic interactions and leading to spin state crossovers of Co ions. Magnetization measurements revealed that Fe substitution weakened both intra and interchain magnetic interactions.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Multidisciplinary Sciences
Haoxin Zhou, Ludwig Holleis, Yu Saito, Liam Cohen, William Huynh, Caitlin L. Patterson, Fangyuan Yang, Takashi Taniguchi, Kenji Watanabe, Andrea F. Young
Summary: Spin-polarized superconductivity is observed in Bernal bilayer graphene under a large applied perpendicular electric field. Electrostatic gate tuning leads to transitions between electronic phases with different polarizations in the spin space. A transition to a superconducting state is observed at a finite magnetic field, and the critical temperature is consistent with a spin-triplet order parameter.
Article
Materials Science, Multidisciplinary
Jieun Kim, Derek J. Meyers, Abinash Kumar, Abel Fernandez, Gabriel A. P. Velarde, Zishen Tian, Jong-Woo Kim, James M. LeBeau, Philip J. Ryan, Lane W. Martin
Summary: The dynamics of polarization evolution and rotation in 0.68PbMg(1/3)Nb(2/3)O(3)-0.32PbTiO(3) relaxor ferroelectric thin films have been studied via in operando synchrotron-based X-ray diffraction. A frequency-limited suppression of polarization rotation was observed above ultrasonic frequencies (>= 20 kHz). The suppression at ultrasonic frequencies is attributed to the large activation field needed to move domain walls when the polarization rotates between different monoclinic phases.
Article
Chemistry, Physical
Simon R. Larsen, Daniel Hedlund, Rebecca Clulow, Martin Sahlberg, Peter Svedlindh, Erna K. Delczeg-Czirjak, Johan Cedervall
Summary: The magnetic properties of the (Mn,Co)(23)B-6 compound were investigated using synchrotron X-ray diffraction, neutron powder diffraction, magnetometry, and electronic structure calculations. The study revealed mixed metal occupancies in the compound and a ferrimagnetic structure.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Xiaodong Zhang, Arnau Romaguera, Oscar Fabelo, Francois Fauth, Javier Herrero-Martin, Jose Luis Garcia-Munoz
Summary: YBaCuFeO5 is a candidate for high-temperature chiral multiferroics with strong magnetoelectric coupling. Doping with Mn increases the spin-orbit coupling effects and the overall Fe/Cu cation disorder at the B-sites. The presence of Mn results in a reorientation of the magnetic helix plane, potentially influencing the ferroelectric and magnetoelectric behavior.
Article
Materials Science, Multidisciplinary
R. Aeschlimann, M. N. Grisolia, G. Sanchez-Santolino, J. Varignon, F. Choueikani, R. Mattana, V Garcia, S. Fusil, T. Frohlich, M. Braden, B. Delley, M. Varela, P. Ohresser, J. Santamaria, A. Barthelemy, C. Piamonteze, M. Bibes
Summary: This study investigates the magnetic behavior of rare-earth titanates, revealing the ferrimagnetic nature of GdTiO3 and providing insights into its structural and electronic properties in bulk and thin film form. The research sheds light on the insufficiently explored magnetic states of these complex materials, particularly at oxide interfaces.
PHYSICAL REVIEW MATERIALS
(2021)
Article
Physics, Multidisciplinary
Alessandro Ricci, Nicola Poccia, Gaetano Campi, Shrawan Mishra, Leonard Mueller, Boby Joseph, Bo Shi, Alexey Zozulya, Marcel Buchholz, Christoph Trabant, James C. T. Lee, Jens Viefhaus, Jeroen B. Goedkoop, Agustinus Agung Nugroho, Markus Braden, Sujoy Roy, Michael Sprung, Christian Schuessler-Langeheine
Summary: Using x-ray photon correlation spectroscopy, fluctuations in stripe-type spin order of a layered nickelate were observed on timescales of tens of minutes across a wide temperature range. These fluctuations exhibit anomalous temperature dependence, slowing down at intermediate temperatures and speeding up during heating and cooling, reflecting a direct connection with spatial correlations. The decay of nickelate stripe correlations at low temperatures, similar to the competition between stripes and superconductivity in cuprates, occurs through loss of both spatial and temporal correlations.
PHYSICAL REVIEW LETTERS
(2021)
Review
Physics, Condensed Matter
Pau Jorba, Alexander Regnat, Anh Tong, Marc Seifert, Andreas Bauer, Michael Schulz, Christian Franz, Astrid Schneidewind, Stefan Kunkemoeller, Kevin Jenni, Markus Braden, Andre Deyerling, Marc A. Wilde, James S. Schilling, Christian Pfleiderer
Summary: The study demonstrates that tuning the crystallographic lattice constants can alter the electronic properties of transition-metal and rare-earth compounds, providing access to new forms of order. Experimental setups including tungsten carbide and moissanite cells, as well as bespoke diamond anvil cells, have successfully allowed studies on resistivity and neutron depolarization under high pressure conditions.
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
(2022)
Article
Physics, Multidisciplinary
Yongjian Wang, Henry F. Legg, Thomas Boemerich, Jinhong Park, Sebastian Biesenkamp, A. A. Taskin, Markus Braden, Achim Rosch, Yoichi Ando
Summary: Researchers have discovered that ZrTe5 crystals exhibit a gigantic magnetochiral anisotropy when they are in proximity to a topological quantum phase transition, which is the largest ever observed. The low carrier density, inhomogeneities, and torus-shaped Fermi surface induced by breaking of inversion symmetry in a Dirac material are argued to be central to explaining this extraordinary property.
PHYSICAL REVIEW LETTERS
(2022)
Article
Materials Science, Multidisciplinary
K. Jenni, S. Kunkemoeller, A. Tewari, R. A. Ewings, Y. Sidis, A. Schneidewind, P. Steffens, A. A. Nugroho, M. Braden
Summary: The magnetic excitations in ferromagnetic SrRuO3 were investigated using inelastic neutron scattering experiments on triple-axis and time-of-flight spectrometers. The low-energy low-temperature response exhibited a quadratic spin-wave dispersion with an anisotropy gap. The magnon dispersion extended up to 35 meV, with no evidence of a continuum of Stoner excitations below this energy. However, the magnon response weakened at higher energies. In addition to the anomalous softening of the spin-wave stiffness and gap induced by the topology of the Bloch states, the magnon excitations also showed broadening in energy, which increased with temperature.
Article
Materials Science, Multidisciplinary
A. Revelli, M. Moretti Sala, G. Monaco, M. Magnaterra, J. Attig, L. Peterlini, T. Dey, A. A. Tsirlin, P. Gegenwart, T. Froehlich, M. Braden, C. Grams, J. Hemberger, P. Becker, P. H. M. van Loosdrecht, D. I. Khomskii, J. van den Brink, M. Hermanns, M. Grueninger
Summary: Ba3InIr2O9 is a promising candidate for quantum spin-liquid behavior and exhibits magnetism from spin-orbit entangled quasimolecular moments. Our study reveals its unique electronic states and excitations through various experimental and computational methods.
Article
Materials Science, Multidisciplinary
I Vergara, M. Magnaterra, P. Warzanowski, J. Attig, S. Kunkemoeller, D. Khomskii, M. Braden, M. Hermanns, M. Grueninger
Summary: This article discusses the competition between spin-orbit coupling and crystal field splitting in Ca2RuO4, and explains the orbital occupation ratio using optical spectral weights. The study shows that Δ(CF)/ζ is between 2.4 and 4 at 15 K. The crystal field dominates the orbital order of the ground state, but spin-orbit coupling is necessary for a quantitative description of the properties. Furthermore, the crystal field splitting decreases with increasing temperature.
Article
Materials Science, Multidisciplinary
T. Gruner, S. Lucas, C. Geibel, K. Kaneko, S. Tsutsui, K. Schmalzl, O. Stockert
Summary: The superstructure and phonon softening in Lu(Pt0.5Pd0.5)2In indicate a continuous CDW transition, with the importance of critical fluctuations. The observed phonon dispersion relations are similar to theoretical calculations, but the softening occurs in a narrower momentum range.
Article
Materials Science, Multidisciplinary
K. Jenni, S. Kunkemoeller, W. Schmidt, P. Steffens, A. A. Nugroho, M. Braden
Summary: By conducting polarized inelastic neutron scattering experiments under magnetic fields, we have determined the chirality of ferromagnetic zone-center excitations as a function of temperature. The results show that the excitation is perfectly chiral in the ferromagnetic phase and when the spontaneous magnetization is almost completely suppressed, the chirality is reduced but does not change sign.
Article
Materials Science, Multidisciplinary
N. Biniskos, F. J. dos Santos, K. Schmalzl, S. Raymond, M. dos Santos Dias, J. Persson, N. Marzari, S. Bluegel, S. Lounis, T. Brueckel
Summary: This study investigates the magnetic exchange couplings, spin configurations, and magnon dispersion relations of the noncollinear antiferromagnetic phase of Mn5Si3 using inelastic neutron scattering measurements and density functional theory calculations. Additionally, the evolution of the spin texture under an external magnetic field and the field-induced phase transitions are explored. The study also reveals that magnetic moments in a frustrated arrangement can be tuned by a magnetic field.
Article
Materials Science, Multidisciplinary
Zhen Ma, Zhao-Yang Dong, Jinghui Wang, Shuhan Zheng, Kejing Ran, Song Bao, Zhengwei Cai, Yanyan Shangguan, Wei Wang, M. Boehm, P. Steffens, L. -P. Regnault, Xiao Wang, Yixi Su, Shun-Li Yu, Jun-Ming Liu, Jian-Xin Li, Jinsheng Wen
Summary: The study explores the disorder effect in quantum spin liquids by investigating the magnetic-field dependence of low-energy magnetic excitations in a triangular-lattice frustrated magnet. The results demonstrate the critical role of disorder in broadening the magnetic excitation spectra and mimicking the spin-liquid features in frustrated quantum magnets.
Article
Materials Science, Multidisciplinary
S. Biesenkamp, D. Gorkov, W. Schmidt, K. Schmalzl, Y. Sidis, P. Becker, L. Bohaty, M. Braden
Summary: This study investigates the magnetic structure and multiferroic relaxation dynamics of NaFeGe2O6 using neutron scattering, revealing an additional component of magnetic moments at lower temperatures and demonstrating the reversibility of controlling spin-spiral handedness with external electric fields. The time-resolved measurements show a simple temperature and electric-field dependence of multiferroic relaxation, similar to what has been observed in TbMnO3, with the maximum speed of domain wall motion comparable to the spin-wave velocity.
Article
Materials Science, Multidisciplinary
D. Breuning, T. Froehlich, D. Gorkov, I. Cisarova, Y. Skourski, L. Rossi, B. Bryant, S. Wiedmann, M. Meven, A. Ushakov, S. V. Streltsov, D. Khomskii, P. Becker, L. Bohaty, M. Braden, T. Lorenz
Summary: The Cs3Fe2Br9 material contains Fe2Br9 bi-octahedra with semiclassical S = 5/2 Fe3+ spins, leading to a rich magnetic phase diagram with different ordered phases. The high degree of magnetic frustration and strong magnetoelastic coupling result in a surprisingly complex magnetic behavior in this material.
Article
Materials Science, Multidisciplinary
I. Golosovsky, A. A. Mukhin, V Skumryev, M. Boehm, W. Schmidt, L-P Regnault, I. A. Gudim
Summary: Inelastic neutron scattering spectra of antiferromagnetic ferroborates Nd1-xTbxFe3(BO3)(4) show magnetic excitations of iron and rare-earth subsystems. The magnetic system evolves from easy-plane to easy-axis anisotropy with Tb substitution. The hybridized Fe and Nd branches are influenced by Fe-Nd exchange splitting and the Tb Ising-type anisotropy.
Article
Materials Science, Multidisciplinary
N. P. Hanni, D. Sheptyakov, M. Mena, E. Hirtenlechner, L. Keller, U. Stuhr, L-P Regnault, M. Medarde, A. Cervellino, Ch Ruegg, B. Normand, K. W. Kramer
Summary: The study reveals that in RbCoCl3, Co2+ ions form one-dimensional antiferromagnetic correlations along Ising chains below 90K, with partial three-dimensional magnetic order setting in below 28K. The system achieves a fully ordered state below the second magnetic phase transition.
