Results 71 to 80 of about 86,392 (294)

Soft x-ray spectroscopy experiments on the near K-edge of B in MB2 (M=Mg, Al, Ta, and Nb)

, 2001
Soft X-ray absorption and emission measurements are performed for the K- edge of B in MB$_2$ (M=Mg, Al, Ta and Nb). Unique feature of MgB$_2$ with a high density of B 2$p_{xy}(\sigma)$-state below and above the Fermi edge, which extends to 1 eV above the
A.S. Cooper, David L. Ederer, G. Satta, H. Schmidt, J. Kortus, J. Nagamatsu, J.J. Jia, J.M. An, J.S. Slusky, Jin Nakamura, Jonathan D. Denlinger, K. Kuroki, K.D. Belashchenko, Kazuhiko Kuroki, L. Leyarovskaya, Nobuyoshi Yamada, Rupert C. C. Perera, S.L. Bud’ko, T.A. Callcott, Thomas A. Callcott, Y. Kong   +20 more
core   +1 more source

Activating a Metallization Switch for Record Hydrogen Evolution in Single‐Atom Modified Polar MOF Piezocatalysts

Advanced Materials, EarlyView.
ABSTRACT Piezocatalytic hydrogen evolution enables the conversion of mechanical energy into chemical fuels, but its efficiency is constrained by a trade‐off between piezoelectric polarization and electronic conductivity. Strong piezoelectric polarization is essential for sufficient driving force, yet highly polar materials typically suffer from poor ...
Chongyan Hao, Xinwei Guan, Yang Wu, Lingfeng Zhu, Yiwen Mai, Thomas Frauenheim, Zhenping Fu, Yalin Lu, Shidong Wang, Hanxing Liu, Hua Hao, Shujun Zhang, Zhenxiang Cheng, Xiaoning Li   +13 more
wiley   +1 more source

Electron Accumulation and Emergent Magnetism in LaMnO3/SrTiO3 Heterostructures

, 2017
Emergent phenomena at polar-nonpolar oxide interfaces have been studied intensely in pursuit of next-generation oxide electronics and spintronics. Here we report the disentanglement of critical thicknesses for electron reconstruction and the emergence of
Arenholz, E., Chen, Zhanghui, Chen, Zuhuang, Dedon, L. R., Fan, L. S., Frederick, C., Gao, R., Holtz, M. E., Li, C. J., Liu, J., Liu, Z. Q., Lv, W. M., Martin, L. W., Motapothula, M., Muller, D. A., Mundy, J. A., NDiaye, A. T., Turcaud, J. A., Venkatesan, T., Wang, L. -W., Wang, X. Renshaw, Xu, R. J.   +21 more
core   +1 more source

Boosting Seawater Desalination by Ampere‐Level Nitrate Electroreduction On Defect‐Rich Ultrathin RuCu Alloy Nanostructures

Advanced Materials, EarlyView.
Defect engineering of ultrathin RuCu alloy nanostructures has been successfully achieved to enhance ammonia electrosynthesis under indutrial‐level current density. Simultaneously, the stable ampere‐level operation of nitrate electroreduction on defective RuCu nanostructures can drive seawater desalination at an ultrafast salt removal rate, offering an ...
Juan Wang, Liang Guo, Qingbo Wa, Fengkun Hao, Fu Liu, Chaohui Wang, Yunhao Wang, Mingzheng Shao, Yiwei Guo, Guozhi Wang, Xiang Meng, Fangren Qian, Xiuyun Zhang, Chongyi Ling, Shengqi Chu, Zhanxi Fan   +15 more
wiley   +1 more source

Mott-Kondo Insulator Behavior in the Iron Oxychalcogenides

, 2015
We perform a combined experimental-theoretical study of the Fe-oxychalcogenides (FeO$\emph{Ch}$) series La$_{2}$O$_{2}$Fe$_{2}$O\emph{M}$_{2}$ (\emph{M}=S, Se), which is the latest among the Fe-based materials with the potential \ to show unconventional ...
Chang, Chinglin, Chen, Jeng-Lung, Chen, Jiaqi, Craco, L., Fang, Minghu, Flauca, R., Freelon, B., Guo, J. -H., Hussain, Z., Laad, M. S., Leoni, S., Liu, Yu Hao, Tao, Li, Wang, Hangdong, Yamani, Z.   +14 more
core   +1 more source

Wafer‐Scale 2D High‐Entropy Transition Metal Dichalcogenide Thin‐Film Catalysts for Efficient and Durable Photoelectrochemical Hydrogen Production

Advanced Materials, EarlyView.
A wafer‐scale 2D high‐entropy (MoWTaNbRu)S2 thin‐film catalyst with a distorted 1T phase integrated onto p‐Si photocathode is designed for highly efficient and durable photoelectrochemical hydrogen evolution reaction. The high‐entropy effect in layered transition metal dichalcogenides optimizes hydrogen adsorption energetics, accelerates photogenerated
Sang Eon Jun, Jin Ho Seo, Jaehyun Kim, Hyungsoo Lee, Seongbeen Kim, Woo Seok Cheon, Sabina Kim, In Hye Kwak, Byeong‐Gwan Cho, Ki Chang Kwon, Chul‐Ho Lee, Jungwon Park, Jooho Moon, Jennifer A. Dionne, Ho Won Jang   +14 more
wiley   +1 more source

Micro-spectroscopic investigation of selenium-bearing minerals from the Western US Phosphate Resource Area

Geochemical Transactions, 2005
Mining activities in the US Western Phosphate Resource Area (WPRA) have released Se into the environment. Selenium has several different oxidation states and species, each having varying degrees of solubility, reactivity, and bioavailability.
Gunter Mickey E, Johnson-Maynard Jodi L, Marcus Matthew A, Strawn Daniel G, Ryser Amy L, Möller Gregory   +5 more
doaj   +1 more source

Influence of laser-excited electron distributions on the x-ray magnetic circular dichroism spectra: Implications for femtosecond demagnetization in Ni

, 2009
In pump-probe experiments an intensive laser pulse creates non-equilibrium excited electron distributions in the first few hundred femtoseconds after the pulse.
Blaha P., D. Legut, Gómez-Abal R., K. Carva, Koopmans B., Oppeneer P. M., P. M. Oppeneer   +6 more
core   +1 more source

Phase Engineering of Nanomaterials (PEN): Evolution, Current Challenges, and Future Opportunities

Advanced Materials, EarlyView.
This review summarizes the synthesis, phase transition, advanced characterization spanning ex situ to in situ and operando techniques, and diverse applications of phase engineering of nanomaterials (PEN). It further outlines key challenges and future opportunities, such as phase stability, architecture control, and artificial intelligence (AI)‐driven ...
Ye Chen, Zhanxi Fan, Jingjie Ge, Qiyuan He, Zhuangchai Lai, Jiawei Liu, Chaoliang Tan, Hua Zhang   +7 more
wiley   +1 more source

Mott versus Slater-type metal-insulator transition in Mn-substituted Sr3Ru2O7

, 2012
We present a temperature-dependent x-ray absorption (XAS) and resonant elastic x-ray scattering (REXS) study of the metal-insulator transition (MIT) in Sr3(Ru1-xMnx)2O7.
Bohnenbuck, B., Chen, C. T., Chuang, Y. D., Cruz, A. G., Damascelli, A., Elfimov, I. S., Haverkort, M. W., Hossain, M. A., Hu, Z., Hussain, Z., Keimer, B., Lin, H. -J., Mathieu, R., Sawatzky, G. A., Tanaka, A., Tjeng, L. H., Tokura, Y., Yoshida, Y.   +17 more
core   +1 more source