Results 41 to 50 of about 309,890 (334)

Ordered states in the Kitaev-Heisenberg model: From 1D chains to 2D honeycomb

Scientific Reports, 2018
We study the ground state of the 1D Kitaev-Heisenberg (KH) model using the density-matrix renormalization group and Lanczos exact diagonalization methods. We obtain a rich ground-state phase diagram as a function of the ratio between Heisenberg (J = cosϕ)
Cliò Efthimia Agrapidis, Jeroen van den Brink, Satoshi Nishimoto   +2 more
doaj   +1 more source

Experimental and computational study of nearly half-metallic V2CoGa [PDF]

AIP Advances
Here, we present the results of a combined computational and experimental study of electronic, magnetic, and structural properties of V2CoGa, a Heusler alloy that exhibits high spin polarization values in an ordered crystal structure.
Parashu Kharel, Caden Sadler, Ty Porter, Cole Brown, Mohd Anas, Paul M. Shand, Pavel V. Lukashev   +6 more
doaj   +1 more source

Topological Insulators from Spontaneous Symmetry Breaking Induced by Electron Correlation on Pyrochlore Lattices

, 2011
We study an extended Hubbard model with the nearest-neighbor Coulomb interaction on the pyrochlore lattice at half filling. An interaction-driven insulating phase with nontrivial Z_2 invariants emerges at the Hartree-Fock mean-field level in the phase ...
Andrei Bernevig B., Fu L., Fu L., Fu L., Guo H.-M., Hatsugai Y., Hsieh D., Imada M., Ishii F., Kane C. L., Klitzing K. v., König M., Laughlin R. B., Liu G., Mandrus D., Misawa T., Moore J. E., Pesin D., Raghu S., Roy R., Thouless D. J., Wen J., Yang B.-J., Young M. W., Zhang Y.   +24 more
core   +1 more source

Unraveling the nature of spin excitations disentangled from charge contributions in a doped cuprate superconductor

npj Quantum Materials, 2022
The nature of the spin excitations in superconducting cuprates is a key question toward a unified understanding of the cuprate physics from long-range antiferromagnetism to superconductivity.
Wenliang Zhang, Cliò Efthimia Agrapidis, Yi Tseng, Teguh Citra Asmara, Eugenio Paris, Vladimir N. Strocov, Enrico Giannini, Satoshi Nishimoto, Krzysztof Wohlfeld, Thorsten Schmitt   +9 more
doaj   +1 more source

Computational Lattice-Gas Modeling of the Electrosorption of Small Molecules and Ions

, 1994
We present two recent applications of lattice-gas modeling techniques to electrochemical adsorption on catalytically active metal substrates: urea on Pt(100) and (bi)sulfate on Rh(111).
A. Wieckowski, Acharyya, Armand, Barnes, Baxter, Binder, Blum, Blum, Blum, Blum, Blum, Collins, Domany, Domany, Edens, Einstein, Feibelman, Gamboa-Aldeco, Gamboa-Aldeco, H.L. Richards, Hightower, Huckaby, Itai, J. Zhang, Kittel, Kornyshev, M. Gamboa-Aldeco, M. Han, Magnussen, Mrozek, Nightingale, Ocko, P.A. Rikvold, Pascard-Billy, Peremans, Press, Privman, Q. Wang, Rikvold, Rikvold, Rikvold, Rikvold, Rikvold, Rikvold, Rikvold, Rikvold, Rubel, Sawatari, Schick, Zangwill   +49 more
core   +1 more source

On a relative uniform completion of an archimedean lattice ordered group

, 2009
The notion of a relatively uniform convergence (ru-convergence) has been used first in vector lattices and then in Archimedean lattice ordered groups.Let G be an Archimedean lattice ordered group.
Stefan Cernák, Judita Lihová
semanticscholar   +1 more source

Structural biology of ferritin nanocages

FEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Crystal structure of bis[(1-ammonio-1-phosphonoethyl)phosphonato]tetraaquacadmium dihydrate: a powder X-ray diffraction study

Acta Crystallographica Section E: Crystallographic Communications, 2015
In the title compound, [CdL2(H2O)4]·2H2O [L = (1-ammonio-1-phosphonoethyl)phosphonate, C2H8NO6P2−], the CdII ion is situated on an inversion centre being coordinated by four aqua molecules in the equatorial plane and two phosphonate O atoms from two ...
Mwaffak Rukiah, Thaer Assaad
doaj   +1 more source

Proof Theory and Ordered Groups

, 2017
Ordering theorems, characterizing when partial orders of a group extend to total orders, are used to generate hypersequent calculi for varieties of lattice-ordered groups (l-groups).
A Ciabattoni, A Ciabattoni, A Clay, BH Neumann, EC Weinberg, F Montagna, G Metcalfe, G Metcalfe, GB Dantzig, K Terui, L Fuchs, LH Smith, ME Anderson, N Galatos, P Jipsen, R Cignoli, S Burris, VM Kopytov, WC Holland, WC Holland, WC Holland   +20 more
core   +1 more source

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

Advanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur, Faruk Kaya, Bora Derin, Mustafa Lütfi Öveçoğlu, Ju Li, Duygu Ağaoğulları   +5 more
wiley   +1 more source