Results 71 to 80 of about 6,781,577 (346)

Chiral Weyl Pockets and Fermi Surface Topology of the Weyl Semimetal TaAs.

Physical Review Letters, 2016
Tantalum arsenide is a member of the noncentrosymmetric monopnictides, which are putative Weyl semimetals. In these materials, three-dimensional chiral massless quasiparticles, the so-called Weyl fermions, are predicted to induce novel quantum mechanical
F. Arnold, M. Naumann, Shu-chun Wu, Yan Sun, M. Schmidt, H. Borrmann, C. Felser, Binghai Yan, E. Hassinger   +8 more
semanticscholar   +1 more source

Manipulating superconductivity in ruthenates through Fermi surface engineering [PDF]

, 2016
The key challenge in superconductivity research is to go beyond the historical mode of discovery-driven research. We put forth a new strategy, which is to combine theoretical developments in the weak-coupling renormalization-group approach with the ...
Yi-Ting Hsu, Weejee Cho, Bulat Burganov, C. Adamo, A. Rébola, K. Shen, D. Schlom, C. Fennie, Eun-Ah Kim   +8 more
semanticscholar   +1 more source

Elucidating Sodium Ion Storage Mechanisms in Hard Carbon Anodes at the Electronic Level

Advanced Functional Materials, EarlyView.
High‐resolution, multi‐frequency continuous wave, and pulsed Electron Paramagnetic Resonance (EPR) spectroscopy uncover the intricate Na ion storage mechanisms in hard carbon. This study reveals the coexistence of Na ion intercalation and solvent co‐intercalation, alongside a subsequent transition of Na ions from ionic to quasi‐metallic to metallic ...
Qingbing Xia, Cheng‐Lin Ko, Emily R. Cooper, Qinfen Gu, Ruth Knibbe, Jeffrey R. Harmer   +5 more
wiley   +1 more source

Quantum Oscillations without a Fermi Surface and the Anomalous de Haas-van Alphen Effect. [PDF]

Physical Review Letters, 2015
The de Haas-van Alphen effect (dHvAE), describing oscillations of the magnetization as a function of magnetic field, is commonly assumed to be a definite sign for the presence of a Fermi surface (FS).
J. Knolle, N. Cooper
semanticscholar   +1 more source

Artificial Modulation of the Hydrogen Evolution Reaction Kinetics via Control of Grain Boundaries Density in Mo2C Through Laser Processing

Advanced Functional Materials, EarlyView.
A laser‐driven strategy enables precise microstructural modulation of Mo₂C, achieving nanoscale grain control (15.6 ± 5 nm) and an ultrahigh grain boundary density (130 µm−1). Moreover, high‐angle grain boundaries enhance active sites, facilitate electron transport, and optimize hydrogen adsorption kinetics, significantly reducing overpotential.
Seok‐Ki Hyeong, Byung Joon Moon, Aram Lee, Min Ji Im, Hee Yun Yang, Ji‐Hee Choi, Seung‐Il Kim, Ji‐Yun Moon, Seoungwoong Park, Sung Kyu Jang, Tae‐Wook Kim, Jae‐Hyun Lee, Sukang Bae, Seoung‐Ki Lee   +13 more
wiley   +1 more source

Unconventional Fermi surface in an insulating state [PDF]

Science, 2015
Probing the insulating state of SmB6 When a metal is subjected to a strong magnetic field, its electrons start rearranging into new energy levels, causing its electronic properties to oscillate as a function of the field.
B. S. Tan, Yu-Te Hsu, B. Zeng, M. Hatnean, N. Harrison, Zengwei Zhu, M. Hartstein, M. Kiourlappou, A. Srivastava, M. Johannes, T. Murphy, J. Park, L. Balicas, G. Lonzarich, G. Balakrishnan, S. Sebastian   +15 more
semanticscholar   +1 more source

Photoswitchable Conductive Metal–Organic Frameworks

Advanced Functional Materials, EarlyView.
A conductive material where the conductivity can be modulated remotely by irradiation with light is presented. It is based on films of conductive metal–organic framework type Cu3(HHTP)2 with embedded photochromic molecules such as azobenzene, diarylethene, spiropyran, and hexaarylbiimidazole in the pores.
Yidong Liu, Mersad Mostaghimi, Abhinav Chandresh, Saibal Jana, Wolfgang Wenzel, Lars Heinke   +5 more
wiley   +1 more source

Scalable T2 resistivity in a small single-component Fermi surface [PDF]

Science, 2015
Trying to break a stubborn law The electrical resistivity of most metals at low temperatures has a characteristic quadratic dependence on temperature.
Xiao Lin, B. Fauqué, Kamran Behnia
semanticscholar   +1 more source

Exploring Electronic States and Ultrafast Electron Dynamics in AlInP Window Layers: The Role of Surface Reconstruction

Advanced Functional Materials, EarlyView.
This study examines the surface characteristics of AlInP (001), crucial for advanced solar cells and photoelectrochemical devices. Using theoretical modeling and experiments, it identifies how phosphorus‐rich and indium‐rich surfaces create mid‐gap states that pin the Fermi level and influence ultrafast electron dynamics.
Mohammad Amin Zare Pour, Sahar Shekarabi, Isaac Azahel Ruiz Alvarado, Jonathan Diederich, Yuyings Gao, Agnieszka Paszuk, Dominik C. Moritz, Wolfram Jaegermann, Dennis Friedrich, Roel van de Krol, Wolf Gero Schmidt, Thomas Hannappel   +11 more
wiley   +1 more source

The structural, magnetic, optoelectronic, and mechanical characteristics of NaGeX3 perovskites under pressure for soler-cell applications

Materials Research Express
This study examines the physical properties of germanium-based halide perovskite through Density Functional Theory (DFT) computations. The physical, optical, mechanical, and magnetic properties of NaGeX _3 (X = Cl, Br, and I) were examined with the ...
Istiak Ahmed Ovi, MD Ratul Hasan, Imtiaz Ahamed Apon, Fatema-Tuz Zahra   +3 more
doaj   +1 more source