Article
Instruments & Instrumentation
Jakob Lass, Henrik Jacobsen, Kristine M. L. Krighaar, Dieter Graf, Felix Groitl, Frank Herzog, Masako Yamada, Christian Kagi, Raphael A. Muller, Roman Burge, Marcel Schild, Manuel S. Lehmann, Alex Bollhalder, Peter Keller, Marek Bartkowiak, Uwe Filges, Urs Greuter, Gerd Theidel, Henrik M. Ronnow, Christof Niedermayer, Daniel G. Mazzone
Summary: This article presents the commissioning results of CAMEA, a cold neutron secondary spectrometer designed for efficient data acquisition of scattered neutrons in the horizontal scattering plane at the Swiss Spallation Neutron Source. CAMEA allows for detailed and rapid mapping of low-energy excitations under extreme sample environment conditions.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2023)
Article
Physics, Multidisciplinary
Randy S. Fishman, Jason S. Gardner, Satoshi Okamoto
Summary: This study investigates the orbital angular momentum of magnons in collinear ferromagnetic and antiferromagnetic systems with nontrivial networks of exchange interactions. The results show that the orbital angular momentum of magnons becomes nonzero in zigzag and honeycomb lattices when the lattice contains two inequivalent sites and reaches its peak at avoided-crossing points or extremum of the frequency bands. Thus, the arrangement of exchange interactions may play a more significant role in generating the orbital angular momentum of magnons compared to spin-orbit coupling energy and the resulting noncollinear arrangement of spins.
PHYSICAL REVIEW LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Zhiling Dun, Marcus Daum, Raju Baral, Henry E. Fischer, Huibo Cao, Yaohua Liu, Matthew B. Stone, Jose A. Rodriguez-Rivera, Eun Sang Choi, Qing Huang, Haidong Zhou, Martin Mourigal, Benjamin A. Frandsen
Summary: The study confirms the realization of KT physics in TmMgGaO4 and determines the leading parameters of the low-energy effective Hamiltonian caused by Tm3+ ions. It further shows that the magnetic behavior of TmMgGaO4 is relatively unaffected by structural disorder in zero field.
Article
Computer Science, Information Systems
Bogdan Ksiezopolski, Katarzyna Mazur, Marek Miskiewicz, Damian Rusinek
Summary: This research investigates how practical knowledge affects the learning experience and measures the effectiveness of the proposed solution. For cybersecurity, practical problem-solving and theoretical teaching should go hand-in-hand, allowing students to learn in an interactive hands-on environment.
Article
Materials Science, Multidisciplinary
L. Stoppel, S. Hayashida, Z. Yan, A. Podlesnyak, A. Zheludev
Summary: In the S = 1 easy-plane-type triangular antiferromagnets CsFeCl3 and RbFeCl3, magnetic excitations were investigated using a combination of inelastic neutron scattering measurements and spin-wave theory calculations. An established exchange-coupling Hamiltonian was used, but failed to adequately describe the measured intensities, especially in RbFeCl3. The observed anomalies, such as anisotropic azimuthal intensity distribution, were attributed to long-range dipolar interactions.
Article
Multidisciplinary Sciences
Daisuke Yamamoto, Takahiro Sakurai, Ryosuke Okuto, Susumu Okubo, Hitoshi Ohta, Hidekazu Tanaka, Yoshiya Uwatoko
Summary: The study proposes and demonstrates a method for actively controlling the classical-quantum crossover in magnetic insulators by applying external pressure, showing evolution of magnetization process from semi-classical to highly-quantum regime in CsCuCl3. By compressing spin chains to alter the value of local spin quantum number in a two-dimensional model, quantum correlations are characterized and the tunable classical-quantum crossover of two-dimensional spin systems is accessed.
NATURE COMMUNICATIONS
(2021)
Article
Materials Science, Ceramics
Mbaye Ndour, Laurent Chaput, Philippe Jund
Summary: This study prepared ten small size samples of amorphous silica containing 78 atoms using classical molecular dynamics and the BKS empirical potential. The structural characteristics of these samples were found to be in good agreement with experimental data, and dynamical properties were also relatively well compared with neutron scattering experiments. These small dynamically stable structures can be used to study more complicated physical properties, such as thermal conductivity or diffusivity, at a reduced computational cost.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Materials Science, Multidisciplinary
Yanyan Shangguan, Song Bao, Zhao-Yang Dong, Zhengwei Cai, Wei Wang, Zhentao Huang, Zhen Ma, Junbo Liao, Xiaoxue Zhao, Ryoichi Kajimoto, Kazuki Iida, David Voneshen, Shun-Li Yu, Jian-Xin Li, Jinsheng Wen
Summary: The research demonstrates that excited quasiparticles in the compound Na2Cu2TeO6 can counter thermal decoherence and maintain strong correlations at elevated temperatures, showing unique dispersive and gap properties.
Article
Multidisciplinary Sciences
Motoi Kimata, Norimasa Sasabe, Kensuke Kurita, Yuichi Yamasaki, Chihiro Tabata, Yuichi Yokoyama, Yoshinori Kotani, Muhammad Ikhlas, Takahiro Tomita, Kenta Amemiya, Hiroyuki Nojiri, Satoru Nakatsuji, Takashi Koretsune, Hironori Nakao, Taka-hisa Arima, Tetsuya Nakamura
Summary: The observation of ferroic order of magnetic octupole in Mn3Sn by X-ray magnetic circular dichroism, which has only been predicted theoretically so far, indicates that the exotic material functionalities are closely related to the multipole order. The decoupling of observed signals from uniform magnetization suggests that X-ray magnetic circular dichroism in Mn3Sn is not originating from conventional magnetization, pointing to the possibility of unconventional cross correlation functionalities due to multipole order. The detection of magnetic octupole moment through X-ray magnetic circular dichroism has not been experimentally demonstrated before.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Carly C. Carter, Ryan A. Klein, Wei Zhou, Terrence J. Udovic, Craig M. Brown, Ting-Bin Wen, Thomas R. Cundari, Muhammed Yousufuddin
Summary: The study characterized the metal-hydrogen and hydrogen-hydrogen interactions in a previously reported compound using diffraction and inelastic neutron scattering measurements, paired with molecular and solid-state density functional theory. Based on the findings, the compound was reclassified as a rare example of a non-classical compressed dihydride species.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Jem Pitcairn, Andrea Iliceto, Laura Canadillas-Delgado, Oscar Fabelo, Cheng Liu, Christian Balz, Andreas Weilhard, Stephen P. Argent, Andrew J. Morris, Matthew J. Cliffe
Summary: Metal-organic magnets (MOMs) are promising candidates for next-generation quantum technologies. In this study, we report a new quasi-1D S = 2 MOM and show that it does not exhibit the Haldane phase, but its structure and properties suggest that layered Cr(II) MOMs are a promising family to search for the elusive S = 2 Haldane phase.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
Wenjing Zhu, Chengxiang Ding, Long Zhang, Wenan Guo
Summary: （English Summary:）
In a two-dimensional system, different surface critical behaviors were observed without dimerization. Surfaces along the chain direction showed typical critical behavior, while those perpendicular to the chain direction displayed nonordinary behavior, consistent with transitions found in dimerized Heisenberg models.
Article
Chemistry, Physical
A. J. Porter, A. J. O'Malley
Summary: The study examined the diffusion of water in zeolite HY at 300K, revealing that water loading significantly affects diffusivity, while a higher Si/Al ratio leads to lower diffusivity. The presence of silanol nest defects did not have a significant impact on water diffusivity in any condition.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Multidisciplinary
Alexander Baer, Ingo Hoffmann, Najet Mahmoudi, Alexandre Poulhazan, Matthew J. Harrington, Georg Mayer, Stephan Schmidt, Emanuel Schneck
Summary: To understand the mechanoresponsive behavior of the bio-adhesive slime, the nanostructural organization of its components was studied using small-angle scattering with neutrons and X-rays. It was found that the majority of slime proteins exist freely in solution, while only less than 10% are contained in nanoglobules. Comparing scattering data of slime re-hydrated with light and heavy water revealed that the majority of lipids are contained in nanoglobules with homogeneous distribution. Vibrating mechanical impact without air did not lead to fiber formation, suggesting that interfacial phenomena and directional shearing are required for fiber formation.
Article
Materials Science, Multidisciplinary
Satoru Kobayashi, Eiji Nomura, Momoko Chiba, Yukihiko Kawamura, Kazuki Ohishi, Kosuke Hiroi, Jun-ichi Suzuki
Summary: We conducted polarized small-angle and wide-angle neutron scattering experiments on 420 nm-sized hollow Fe3O4 spherical particles. Each particle is a mesocrystal composed of small nanoparticles with the same crystallographic orientation. We used polarized neutron experiments to evaluate the magnetic correlations during magnetization process. Our results show that the perpendicular magnetization component maximizes around zero applied field, while the parallel component minimizes, both below and above the Verwey transition temperature. Our calculations suggest the reorientation of the vortex core towards the magnetocrystalline anisotropy axis at low applied fields. We also found that the magnetic domain length obtained from wide-angle scattering is comparable to the size of the small nanoparticles forming the hollow sphere, indicating that magnetic correlations within the nanoparticles retain during magnetization process.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
E. Kermarrec, C. A. Marjerrison, C. M. Thompson, D. D. Maharaj, K. Levin, S. Kroeker, G. E. Granroth, R. Flacau, Z. Yamani, J. E. Greedan, B. D. Gaulin
Article
Materials Science, Multidisciplinary
Zahra Yamani, W. J. L. Buyers, F. Wang, Y. -J. Kim, J. -H. Chung, S. Chang, P. M. Gehring, G. Gasparovic, C. Stock, C. L. Broholm, J. C. Baglo, Ruixing Liang, D. A. Bonn, W. N. Hardy
Article
Materials Science, Multidisciplinary
B. Freelon, Yu Hao Liu, Jeng-Lung Chen, L. Craco, M. S. Laad, S. Leoni, Jiaqi Chen, Li Tao, Hangdong Wang, R. Flauca, Z. Yamani, Minghu Fang, Chinglin Chang, J. -H. Guo, Z. Hussain
Article
Physics, Multidisciplinary
Tom Hogan, Z. Yamani, D. Walkup, Xiang Chen, Rebecca Dally, Thomas Z. Ward, M. P. M. Dean, John Hill, Z. Islam, Vidya Madhavan, Stephen D. Wilson
PHYSICAL REVIEW LETTERS
(2015)
Article
Physics, Multidisciplinary
Ding Hu, Xingye Lu, Wenliang Zhang, Huiqian Luo, Shiliang Li, Peipei Wang, Genfu Chen, Fei Han, Shree R. Banjara, A. Sapkota, A. Kreyssig, A. I. Goldman, Z. Yamani, Christof Niedermayer, Markos Skoulatos, Robert Georgii, T. Keller, Pengshuai Wang, Weiqiang Yu, Pengcheng Dai
PHYSICAL REVIEW LETTERS
(2015)
Article
Materials Science, Multidisciplinary
J. J. Wagman, G. Van Gastel, K. A. Ross, Z. Yamani, Y. Zhao, Y. Qiu, J. R. D. Copley, A. B. Kallin, E. Mazurek, J. P. Carlo, H. A. Dabkowska, B. D. Gaulin
Article
Materials Science, Multidisciplinary
D. H. Ryan, A. Michels, F. Doebrich, R. Birringer, Z. Yamani, J. M. Cadogan
Article
Materials Science, Multidisciplinary
W. Ratcliff, Zahra Yamani, V. Anbusathaiah, T. R. Gao, P. A. Kienzle, H. Cao, I. Takeuchi
Article
Materials Science, Multidisciplinary
R. A. Cowley, W. J. L. Buyers, C. Stock, Z. Yamani, C. Frost, J. W. Taylor, D. Prabhakaran
Article
Materials Science, Multidisciplinary
Huiqian Luo, Xingye Lu, Rui Zhang, Meng Wang, E. A. Goremychkin, D. T. Adroja, Sergey Danilkin, Guochu Deng, Zahra Yamani, Pengcheng Dai
Article
Materials Science, Multidisciplinary
K. A. Ross, L. Harriger, Z. Yamani, W. J. L. Buyers, J. D. Garrett, A. A. Menovsky, J. A. Mydosh, C. L. Broholm
Article
Materials Science, Multidisciplinary
H. J. Silverstein, K. Fritsch, F. Flicker, A. M. Hallas, J. S. Gardner, Y. Qiu, G. Ehlers, A. T. Savici, Z. Yamani, K. A. Ross, B. D. Gaulin, M. J. P. Gingras, J. A. M. Paddison, K. Foyevtsova, R. Valenti, F. Hawthorne, C. R. Wiebe, H. D. Zhou
Article
Materials Science, Multidisciplinary
Chetan Dhital, Tom Hogan, Z. Yamani, Robert J. Birgeneau, W. Tian, M. Matsuda, A. S. Sefat, Ziqiang Wang, Stephen D. Wilson
Article
Physics, Multidisciplinary
Laura Toppozini, Sebastian Meinhardt, Clare L. Armstrong, Zahra Yamani, Norbert Kucerka, Friederike Schmid, Maikel C. Rheinstaedter
PHYSICAL REVIEW LETTERS
(2014)
Article
Multidisciplinary Sciences
Chetan Dhital, Tom Hogan, Wenwen Zhou, Xiang Chen, Zhensong Ren, Mani Pokharel, Yoshinori Okada, M. Heine, Wei Tian, Z. Yamani, C. Opeil, J. S. Helton, J. W. Lynn, Ziqiang Wang, Vidya Madhavan, Stephen D. Wilson
NATURE COMMUNICATIONS
(2014)
