Article
Geosciences, Multidisciplinary
Yuanyuan Hua, Dapeng Zhao, Yi-Gang Xu
Summary: This study investigates the complex mantle convection pattern in a subduction zone with slab-slab interactions. By inverting a large amount of seismic wave arrival time data, the researchers uncover the 3-D velocity structures of the Banda subduction zone and reveal the presence of high-velocity and anisotropic zones associated with the subducting slab. The findings provide new insights into the dynamics of subduction zones and mantle convection.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Chemistry, Inorganic & Nuclear
Tian Tian, Zefen Li, Naizheng Wang, Sangen Zhao, Jiayue Xu, Zheshuai Lin, Dajiang Mei
Summary: The study successfully synthesized a sulfide compound with a two-dimensional layered structure and large birefringence through structural transformation, providing important guidance for the synthesis of birefringent materials.
INORGANIC CHEMISTRY
(2021)
Article
Physics, Applied
Yihang Bai, Yaxuan Wu, Chaobin Jia, Lipeng Hou, Bing Wang
Summary: This paper presents a theoretical study on the two-dimensional (2D) ferromagnetic semiconductors EuSn2X2 (X = P, As) based on rare-earth cations with f-electrons. The results show that EuSn2X2 monolayers possess a large magnetization, controllable magnetic anisotropy energy, and a unique d-electron-mediated f-f exchange mechanism. Both types of EuSn2X2 monolayers are FMSs with indirect energy bandgaps, and can transform to direct bandgap semiconductors under strain. These monolayers exhibit an interesting change in the magnetic easy axis with spin-orbit coupling interaction. The study provides insights into the properties of 2D 4f rare-earth magnets and suggests a way to improve the performance of EuSn2X2 monolayers in nano-electronic devices.
APPLIED PHYSICS LETTERS
(2023)
Article
Chemistry, Physical
Chaoming Shen, Jie Huang, Zexin Zhang, Jingya Xue, Denghui Qian
Summary: This paper proposes a phononic crystal board structure for low-frequency vibration control in ship power systems. The band structure and displacement fields of the structure are calculated using the finite element method, and the band gap characteristics are studied. The results show that the structure has a multi-stage elastic wave band gap, which can inhibit the transmission of flexural waves and isolate low-frequency flexural vibration.
Article
Chemistry, Physical
Ryosuke Kikuchi, Toru Nakamura, Takahiro Kurabuchi, Yasushi Kaneko, Yu Kumagai, Fumiyasu Oba
Summary: YZn3N3 is a ternary zinc nitride with a direct-type band structure and a band gap of 1.80 eV, and its native defects are unlikely to have a significant impact on carrier lifetime. The experimentally determined band gap of YZn3N3 was 1.84 eV, close to the theoretical value, confirming the predicted crystal structure.
CHEMISTRY OF MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Ling Luo, Linan Wang, Jianbang Chen, Jiazheng Zhou, Zhihua Yang, Shilie Pan, Junjie Li
Summary: In this work, nine new noncentrosymmetric compounds are designed and fabricated by coupling alkali earth metal octahedra and nonlinear optical active tetrahedra units. The compound NaMg3Ga3Se8 shows potential as an infrared nonlinear optical material with its large SHG response, wide band gap, high laser-induced damage threshold, and suitable birefringence.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Geosciences, Multidisciplinary
Sheng Wang, Hrvoje Tkalcic
Summary: This study reveals a new class of J-wave anisotropy observations using earthquake coda-correlation wavefield, showing that J-waves traveling through the Earth's inner core exhibit speed differences due to cylindrical anisotropy possibly formed by the lattice-preferred-orientation mechanism of iron. These observations rule out one of the body-centered-cubic iron models, contributing to our understanding of deep Earth dynamics.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Materials Science, Multidisciplinary
C. Paulsen, G. Knebel, G. Lapertot, D. Braithwaite, A. Pourret, D. Aoki, F. Hardy, J. Flouquet, J-P Brison
Summary: Our study on single crystals of UTe2 reveals interesting findings, such as the diamond-shaped hysteresis curves and the 100% shielding effect of the Meissner state. However, the flux pinning effect due to ferromagnetism becomes significant at lower magnetic fields.
Article
Multidisciplinary Sciences
I. F. Llovo, C. Carballeira, D. Sonora, A. Pereiro, J. J. Ponte, S. Salem-Sugui Jr, A. S. Sefat, J. Mosqueira
Summary: Detailed measurements were performed on a high-quality Ba(Fe1-xCox)2As2 (x=0.065) single crystal, revealing a significant rounding of the resistivity above the superconducting critical temperature Tc due to Cooper pairs. The analysis indicates that the angular dependence of the upper critical field, Hc2(theta), deviates significantly from the single-band model, particularly for large angles.
SCIENTIFIC REPORTS
(2021)
Article
Geochemistry & Geophysics
Shibo Xu, Alexey Stovas
Summary: The critical angle is crucial in data processing for refraction seismology. This study proposes a method to determine the critical angle and analyzes its sensitivity to model parameters and azimuthal range. Sensitivity analysis is applied to examine the existence of the critical angle and determine its corresponding values to variations in model parameters and azimuthal range.
GEOPHYSICAL PROSPECTING
(2023)
Article
Geosciences, Multidisciplinary
U. Nanajee, Sunil K. Roy, M. Ravi Kumar
Summary: The shear wave anisotropy of the crust beneath the Arunachal Himalaya was investigated using the splitting of direct S-phases from local earthquakes. The study found that there is a range of delay times between fast and slow waves, with the majority clustered around 0.07 seconds. The orientation of fast polarization directions was also found to vary significantly, with the smallest delay times and largest variation observed in the western part of the Arunachal Himalaya. This variation is likely due to heterogeneities in lithological properties and a combined effect of stress-induced and structure-induced anisotropy.
JOURNAL OF ASIAN EARTH SCIENCES
(2022)
Article
Geology
Fansheng Kong, Stephen S. Gao, Kelly H. Liu, Yinxia Fang, Hejun Zhu, Robert J. Stern, Jiabiao Li
Summary: Approximately two-thirds of Earth's outermost shell is composed of oceanic plates that form at spreading ridges and recycle back to Earth's interior in subduction zones. New evidence reveals the presence of metastable olivine in the uppermost lower mantle within the ancient Farallon plate beneath the eastern United States. This low-density olivine layer compensates the high density of the rest of the subducted slab and prevents further sinking into the deeper part of the lower mantle.
Article
Geosciences, Multidisciplinary
Han Zhang, Brandon Schmandt, Jin S. Zhang
Summary: The measurement of anisotropy using seismic observations and constraints from mineral physics has advanced our understanding of mantle dynamics. In the Pacific Northwest, significant depth-integrated anisotropic signals have been recorded, likely due to mantle flow focusing through slab gaps leading to locally elevated stress.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Geochemistry & Geophysics
Jonathan Wolf, Maureen D. Long, Neala Creasy, Edward Garnero
Summary: This article discusses the feasibility of using S-diff waves to infer lowermost mantle anisotropy. The authors use global wavefield simulations to analyze the influence of various factors on S-diff polarizations and evaluate the effects of seismic anisotropy in both the upper and the lowermost mantle on SHdiff waves. The research results demonstrate that the effects of anisotropy can be clearly distinguished through the splitting parameters of S-diff waves.
GEOPHYSICAL JOURNAL INTERNATIONAL
(2023)
Article
Engineering, Civil
Yang Xiao, Haoyu Li, Jinquan Shi, Jian Hu, Lei Zhang, Hanlong Liu
Summary: Particle size plays a critical role in the engineering behavior of sand, but there is limited research on the effects of particle size on small strain stiffness in biocemented sand. This study found that particle size is the main characteristic that affects the change in small strain shear modulus Gmax. Tests were conducted to investigate Gmax and Gmax anisotropy in biocemented sand using isotropic consolidation tests with shear wave velocity measurement. The results showed that for uncemented sands, Gmax increases with increasing particle size. However, for biocemented sand, biocementation is more effective for smaller grain sizes. In coarse sand, biocementation can inhibit the stiffness increase caused by stress and, at higher stress levels, the Gmax of uncemented sand can even be higher than that of biocemented sand. Particle size does not have an impact on the small strain stiffness anisotropy of uncemented and biocemented sand for rounded glass beads.
TRANSPORTATION GEOTECHNICS
(2023)
Article
Chemistry, Physical
Soo-Whan Kim, Hyun-Kyung Kim, Kyujoon Lee, Kwang Chul Roh, Joong Tark Han, Kwang-Bum Kim, Sunghun Lee, Myung-Hwa Jung
Article
Physics, Applied
S. Jaiswal, K. Lee, J. Langer, B. Ocker, M. Klaeui, G. Jakob
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2019)
Article
Physics, Applied
Hyun-Woo Bang, Woosuk Yoo, Chungman Kim, Sunghun Lee, Jiyeong Gu, Yunchang Park, Kyujoon Lee, Myung-Hwa Jung
APPLIED PHYSICS LETTERS
(2019)
Article
Chemistry, Physical
Dong-Soo Han, Kyujoon Lee, Jan-Philipp Hanke, Yuriy Mokrousov, Kyoung-Whan Kim, Woosuk Yoo, Youri L. W. van Hees, Tae-Wan Kim, Reinoud Lavrijsen, Chun-Yeol You, Henk J. M. Swagten, Myung-Hwa Jung, Mathias Klaeui
Correction
Chemistry, Physical
Dong-Soo Han, Kyujoon Lee, Jan-Philipp Hanke, Yuriy Mokrousov, Kyoung-Whan Kim, Woosuk Yoo, Youri L. W. van Hees, Tae-Wan Kim, Reinoud Lavrijsen, Chun-Yeol You, Henk J. M. Swagten, Myung-Hwa Jung, Mathias Klaui
Article
Chemistry, Multidisciplinary
Chungman Kim, Woosuk Yoo, Hyun-Woo Bang, Sunghun Lee, Yun Chang Park, Young Haeng Lee, Joonyoung Choi, Younjung Jo, Kyujoon Lee, Myung-Hwa Jung
Article
Chemistry, Physical
Yunsun Jang, Woosuk Yoo, Hyun-Woo Bang, Chungman Kim, Young Haeng Lee, Kyujoon Lee, Myung-Hwa Jung
JOURNAL OF ALLOYS AND COMPOUNDS
(2019)
Article
Physics, Applied
Franziska Martin, Kyujoon Lee, Alexander Kronenberg, Samridh Jaiswal, Robert M. Reeve, Mariia Filianina, Sanghyun Ji, Myung-Hwa Jung, Gerhard Jakob, Mathias Klaeui
APPLIED PHYSICS LETTERS
(2020)
Article
Physics, Multidisciplinary
Mariia Filianina, Jan-Philipp Hanke, Kyujoon Lee, Dong-Soo Han, Samridh Jaiswal, Adithya Rajan, Gerhard Jakob, Yuriy Mokrousov, Mathias Klaeui
PHYSICAL REVIEW LETTERS
(2020)
Article
Physics, Applied
Jun-Young Kim, Dong-Soo Han, Mehran Vafaee, Samridh Jaiswal, Kyujoon Lee, Gerhard Jakob, Mathias Klaeui
APPLIED PHYSICS LETTERS
(2020)
Article
Materials Science, Multidisciplinary
Shilei Ding, Andrew Ross, Romain Lebrun, Sven Becker, Kyujoon Lee, Isabella Boventer, Souvik Das, Yuichiro Kurokawa, Shruti Gupta, Jinbo Yang, Gerhard Jakob, Mathias Klaui
Article
Materials Science, Multidisciplinary
G. V. Karnad, C. Gorini, K. Lee, T. Schulz, R. Lo Conte, A. W. J. Wells, D. -S. Han, K. Shahbazi, J. -S. Kim, T. A. Moore, H. J. M. Swagten, U. Eckern, R. Raimondi, M. Klaeui
Article
Physics, Applied
S. Jaiswal, K. Litzius, I. Lemesh, F. Buttner, S. Finizio, J. Raabe, M. Weigand, K. Lee, J. Langer, B. Ocker, G. Jakob, G. S. D. Beach, M. Klaeui
APPLIED PHYSICS LETTERS
(2017)
Article
Materials Science, Multidisciplinary
Tomek Schulz, Kyujoon Lee, Benjamin Krueger, Roberto Lo Conte, Gurucharan V. Karnad, Karin Garcia, Laurent Vila, Berthold Ocker, Dafine Ravelosona, Mathias Klaeui
Article
Engineering, Electrical & Electronic
Kai Litzius, Jonathan Leliaert, Pedram Bassirian, Davi Rodrigues, Sascha Kromin, Ivan Lemesh, Jakub Zazvorka, Kyu-Joon Lee, Jeroen Mulkers, Nico Kerber, Daniel Heinze, Niklas Keil, Robert M. Reeve, Markus Weigand, Bartel Van Waeyenberge, Gisela Schuetz, Karin Everschor-Sitte, Geoffrey S. D. Beach, Mathias Klaeui
NATURE ELECTRONICS
(2020)