Article
Materials Science, Multidisciplinary
Morad Ebrahimkhas, Goetz S. Uhrig, Walter Hofstetter, Mohsen Hafez-Torbati
Summary: In this paper, the existence of an antiferromagnetic Chern insulator (AFCI) in a square-lattice model is demonstrated. The study shows that the AFCI can be formed due to the spin-orbit coupling and strong electronic correlation, which suggests the generic consequence of these factors beyond a specific model or lattice structure. The AFCI has potential applications for a strong magnetic blueshift of the charge gap below the Neel temperature and for realizing the quantum anomalous Hall effect at higher temperatures.
Article
Physics, Multidisciplinary
Seung Hun Lee, Hong Chul Choi, Bohm-Jung Yang
Summary: By breaking inversion symmetry and effective time-reversal symmetry, we can achieve odd-parity spin-triplet superconductivity in metallic materials, leading to spin-polarized Fermi surfaces and nontrivial band topology in the superconducting ground states.
PHYSICAL REVIEW LETTERS
(2021)
Article
Chemistry, Physical
I Mallek-Zouari, W. Ben Taazayet, J-M Greneche, L. Bessais, B. Dkhil, N. Thabet Mliki
Summary: The multiferroic BiFeO3 (BFO) nanoparticles with an average size of 8 nm and a narrow size distribution were successfully synthesized by a hydrothermal method. The nanoparticles exhibit a cycloidal modulation with a period about 5 times smaller than that in the bulk material. The cycloidal modulation can be destabilized by a critical magnetic field of approximately 0.2 T, leading to a homogeneous antiferromagnetic state. Moreover, increasing the external magnetic field up to 8 T does not affect the average magnetic hyperfine field, but results in multiple Mossbauer sextets due to the flexomagnetic effect caused by strain gradients.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Physics, Multidisciplinary
Hong Jian Zhao, Xinran Liu, Yanchao Wang, Yurong Yang, Laurent Bellaiche, Yanming Ma
Summary: This study proposes a new paradigm for harnessing electronic spin in centrosymmetric antiferromagnets by controlling it with an electric field through the Zeeman spin splitting effect. By symmetry analysis, 21 centrosymmetric magnetic point groups that accommodate such an effect were identified, and two materials were predicted to be excellent candidates. The electronic spin magnetization associated with the splitting energy levels can be switched by reversing the electric field.
PHYSICAL REVIEW LETTERS
(2022)
Review
Chemistry, Multidisciplinary
Ifeanyichukwu C. Amaechi, Azza Hadj Youssef, Andreas Dorfler, Yoandris Gonzalez, Rajesh Katoch, Andreas Ruediger
Summary: This article discusses the application of noble-metal-free catalytic nanoparticles in photocatalysis and tribocatalysis, focusing on the use of non-centrosymmetric and polar oxide nanoparticles, as well as the role of different charges in catalytic reactions.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Materials Science, Multidisciplinary
Yang Shi, Ni Li, Junjie Ye, Juan Ma
Summary: This paper presents the constitutive modeling of magnetoelectric coupling in multiferroic nanocomposites induced by piezoelectric and piezomagnetic effects, as well as flexoelectric and flexomagnetic effects. The enhanced ME coupling via flexoeffect is highlighted, showing potential for significant ME coupling effects under certain conditions. The introduction of a new coupling mechanism based on flexo-coupling may lead to the development of high-performance ME nano-structures.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Gabriele Baglioni, Makars Siskins, Maurits Houmes, Martin Lee, Dong Hoon Shin, Samuel Manas-Valero, Eugenio M. Coronado, Yaroslav Blanter, Herre S. J. G. van der Zant, Peter Steeneken
Summary: Magnetostrictive coupling has become a sensitive method for studying magnetism in 2D materials by mechanical means. In this study, we optothermally modulate the magnetization in antiferromagnetic 2D material membranes to induce a high-frequency magnetostrictive driving force. The thermo-magnetostrictive effect near the critical temperature of magnetostrictive 2D materials provides a route for more efficient actuation of nano-magnetomechanical devices and studying the coupling among magnetic, mechanical, and thermodynamic degrees of freedom.
Editorial Material
Multidisciplinary Sciences
Kab-Jin Kim, Kyung-Jin Lee
Summary: Applying strain to an antiferromagnetic material allows its magnetization to be fully switched with an electric current, making it significant for next-generation magnetic memory devices.
Article
Mechanics
Akhilesh Pedgaonkar, Bradley T. Darrall, Gary F. Dargush
Summary: The classical theory of elasticity is an idealized model for many engineering applications, but may fail to describe behavior in fatigue, at small scales, and in structures with high stress concentrations. The consistent couple stress theory, which includes skew-symmetric couple stress mu(ij), has been developed to account for these effects. This theory introduces mean curvature kappa(ij) as the correct energy conjugate of couple stress, with strain e(ij) jointly contributing to elastic energy.
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS
(2021)
Article
Chemistry, Multidisciplinary
Yih-Ren Chang, Ryo Nanae, Satsuki Kitamura, Tomonori Nishimura, Haonan Wang, Yubei Xiang, Keisuke Shinokita, Kazunari Matsuda, Takashi Taniguchi, Kenji Watanabe, Kosuke Nagashio
Summary: The non-centrosymmetric layer stacking of SnS crystals grown on a van der Waals substrate is achieved by physical vapor deposition, and the shift current of SnS is demonstrated through polarization angle dependence and circular photogalvanic effect. The presence of 180 degrees ferroelectric domains in SnS is confirmed by multiple techniques, and an atomic model of the ferroelectric domain boundary is proposed. The direct observation of shift current and ferroelectric domains opens up new possibilities for future studies on shift-current photovoltaics.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yechao Ling, Xiao Yu, Shijun Yuan, Anpeng He, Zhida Han, Jun Du, Qi Fan, Shicheng Yan, Qingyu Xu
Summary: Freestanding thin films of functional materials can have their properties tuned via strain and strain gradients, expanding their range of applications. In this study, a systematic approach was used to fabricate freestanding CrMnFeCoNi high-entropy alloy thin films and it was found that the strain gradients in these films can induce structural phase transitions and changes in magnetic properties.
Article
Chemistry, Physical
Dawei Wang, Jizheng Wu, Chen Si
Summary: Using first-principles calculations, we find that 1T-HfTe2 shows stable 2 x 2 CDW order in its monolayer form due to enhanced electron-phonon coupling. The CDW induces metal-to-insulator transition and the suppression of CDW by electron doping leads to Ising superconductivity in centrosymmetric monolayer 1T-HfTe2, protected by spin-orbital locking. These results provide new insights for designing and controlling quantum states in two-dimensional matter.
Article
Multidisciplinary Sciences
Zhongyi Zhang, Shengshan Qin, Jiadong Zang, Chen Fang, Jiangping Hu, Fu-Chun Zhang
Summary: The presence of Dzyaloshinskii-Moriya (DM) interaction in limited noncentrosymmetric materials leads to unique spin textures and exotic chiral physics. The emergence of DM interaction in centrosymmetric crystals has the potential to greatly enhance material realization. In this study, we demonstrate that an itinerant centrosymmetric crystal respecting a nonsymmorphic space group can serve as a new platform for the DM interaction. Our findings reveal the role of nonsymmorphic symmetries in influencing magnetism and suggest that nonsymmorphic crystals can be promising platforms for designing magnetic interactions.
Review
Computer Science, Information Systems
Atsufumi Hirohata, David C. Lloyd, Takahide Kubota, Takeshi Seki, Koki Takanashi, Hiroaki Sukegawa, Zhenchao Wen, Seiji Mitani, Hiroki Koizumi
Summary: Spintronic devices show promise in replacing nanoelectronic memories and sensors due to their efficiency and scalability. To achieve further miniaturization, new materials development is necessary, such as increasing spin polarization or using antiferromagnets. Recent studies have found interesting properties in antiferromagnetic materials, such as 100% spin-polarized current and topological effects. This review summarizes the recent development of three types of antiferromagnets and discusses their potential for device applications.
Article
Chemistry, Physical
Akira Iyo, Izumi Hase, Hiroshi Fujihisa, Yoshito Gotoh, Nao Takeshita, Shigeyuki Ishida, Hiroki Ninomiya, Yoshiyuki Yoshida, Hiroshi Eisaki, Hishiro T. Hirose, Taichi Terashima, Kenji Kawashima
Summary: In the recently discovered antiperovskite phosphide (Ca,Sr)Pd3P, centrosymmetric (CS) and non-centrosymmetric (NCS) superconducting phases appear with a large difference in transition temperatures (T-c), primarily attributed to the decrease in N(0) associated with the structural phase transition.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
