Results 71 to 80 of about 321,049 (388)

Ferromagnetism in a hard-core boson model

, 2005
The problem of ferromagnetism -- associated with a ground state with maximal total spin -- is discussed in the framework of a hard-core model, which forbids the occupancy at each site with more than one particle.
A. Fledderjohann, A. Langari, Altman, Barbieri, Basile, Boninsegni, Boninsegni, E. M�ller-Hartmann, Eisenberg, Fehske, Fledderjohann, Gutzwiller, Hanisch, Hanisch, Hubbard, K.-H. M�tter, Kanamori, Lewenstein, Linden, Nagaoka, Riera, Shastry, Smakov, Tasaki, Wurth   +24 more
core   +1 more source

Room-Temperature Ferromagnetism in Transparent Transition Metal-Doped Titanium Dioxide

Science, 2001
Dilute magnetic semiconductors and wide gap oxide semiconductors are appealing materials for magnetooptical devices. From a combinatorial screening approach looking at the solid solubility of transition metals in titanium dioxides and of their magnetic ...
Y. Matsumoto, M. Murakami, Tomoji Shono, T. Hasegawa, T. Fukumura, M. Kawasaki, P. Ahmet, T. Chikyow, S. Koshihara, H. Koinuma   +9 more
semanticscholar   +1 more source

Enhancing Corrosion Resistance and Mechanical Strength of 3D‐Printed Iron Polylactic Acid for Marine Applications via Laser Surface Texturing

Advanced Engineering Materials, EarlyView.
Laser surface texturing significantly improves the corrosion resistance and mechanical strength of 3D‐printed iron polylactic acid (Ir‐PLA) for marine applications. Optimal laser parameters reduce corrosion by 80% and enhance tensile strength by 25% and ductility by 15%.
Mohammad Rezayat, Mojtaba Karamimoghadam, Mohammadreza Lalegani Dezaki, Ali Zolfagharian, Giuseppe Casalino, Antonio Mateo, Mahdi Bodaghi   +6 more
wiley   +1 more source

Defect-induced magnetism in undoped wide band gap oxides: Zinc vacancies in ZnO as an example

AIP Advances, 2011
To shed light on the mechanism responsible for the weak ferromagnetism in undoped wide band gap oxides, we carry out a comparative study on ZnO thin films prepared using both sol-gel and molecular beam epitaxy (MBE) methods. Compared with the MBE samples,
G. Z. Xing, Y. H. Lu, Y. F. Tian, J. B. Yi, C. C. Lim, Y. F. Li, G. P. Li, D. D. Wang, B. Yao, J. Ding, Y. P. Feng, T. Wu   +11 more
doaj   +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

Universal Superconductivity in FeTe and All‐Iron‐Based Ferromagnetic Superconductor Heterostructures

Advanced Functional Materials, EarlyView.
The first all‐iron‐based ferromagnetic superconductor heterostructures with high‐temperature superconductivity and strong ferromagnetism aredemonstrated. From this, it is discovered that FeTe becomes universallysuperconducting with a minute level of cationic impurities through doping ordiffusion from neighboring layers, suggesting its ground state can ...
Hee Taek Yi, Xiong Yao, Deepti Jain, Ying‐Ting Chan, An‐Hsi Chen, Matthew Brahlek, Kim Kisslinger, Kai Du, Myung‐Geun Han, Yimei Zhu, Weida Wu, Sang‐Wook Cheong, Seongshik Oh   +12 more
wiley   +1 more source

Magnon-assisted Andreev reflection in a ferromagnet-superconductor junction [PDF]

Europhys. Lett. 56, 583 (2001), 2000
We study subgap transport in a ferromagnet-superconductor junction at low temperature due to Andreev reflection. The mismatch of spin polarized current in the ferromagnet and spinless current in the superconductor results in an additional contact resistance which can be reduced by magnon emission in the ferromagnet.
arxiv   +1 more source

Weak ferromagnetism and glassy state in kappa-(BEDT-TTF)2Hg(SCN)2Br

, 2018
Since the first observation of weak ferromagnetism in the charge-transfer salt kappa-(BEDT-TTF)2-Cu[N(CN)2]Cl [U. Welp et al., Phys. Rev. Lett. 69, 840 (1992)], no further evidence of ferromagnetism in this class of organic materials has been reported ...
Dressel, M., Hemmida, M., Henderson, A., Loidl, A., Miksch, B., Pustogow, A., Samoilenko, L. L., Schlueter, J., Siegrist, T., von Nidda, H. -A. Krug, Widmann, S.   +10 more
core   +1 more source

Medium‐Entropy Engineering of Magnetism in Layered Antiferromagnet CuxNi2(1‐x)CrxP2S6

Advanced Functional Materials, EarlyView.
This study explores the aliovalent substitution strategy with Cu and Cr replacing Ni in Ni₂P₂S₆ compounds to engineer magnetism. By creating CuxNi2(1‐x)CrxP2S6 medium‐entropy alloys, the research reveals the evolution of distinct magnetic phases, including the creation of weak ferromagnetism in intermediate compositions.
Dinesh Upreti, Rabindra Basnet, M. M. Sharma, Santosh Karki Chhetri, Gokul Acharya, Md Rafique Un Nabi, Josh Sakon, Mourad Benamara, Mansour Mortazavi, Jin Hu   +9 more
wiley   +1 more source

The magnetic ordering in high magnetoresistance Mn-doped ZnO thin films

AIP Advances, 2016
We studied the nature of magnetic ordering in Mn-doped ZnO thin films that exhibited ferromagnetism at 300 K and superparamagnetism at 5 K. We directly inter-related the magnetisation and magnetoresistance by invoking the polaron percolation theory and ...
S. Venkatesh, A. Baras, J.-S. Lee, I. S. Roqan   +3 more
doaj   +1 more source