Results 61 to 70 of about 17,445 (204)

Sublattice pairing in pyrochlore Heisenberg antiferromagnets

Physical Review B, 2023
We argue that classical pyrochlore Heisenberg antiferromagnets with small further-neighbor couplings can order in a state where pairs of sublattices form antiparallel spirals. The spiral ordering wave vectors of the two pairs are in general different from each other, and are constrained by which sublattices are being paired.
Cecilie Glittum, Olav F. Syljuåsen
openaire   +3 more sources

Oxidative Coupling of Methane: Perspective for High-Value C₂ Chemicals

Crystals, 2021
The oxidative coupling of methane (OCM) to C2 hydrocarbons (C2H4 and C2H6) has aroused worldwide interest over the past decade due to the rise of vast new shale gas resources.
Palle Ramana Murthy, Yang Liu, Guohao Wu, Yanan Diao, Chuan Shi   +4 more
doaj   +1 more source

Interfacial Atomic and Electronic Structures of LSM/YSZ Thin Films as Models for SOC Air Electrodes

ChemElectroChem, Volume 13, Issue 6, 17 March 2026.
Lanthanum–strontium manganite/yttria‐stabilized zirconia thin films serve as model systems for solid oxide cell electrodes, where high‐resolution scanning transmission electron microscopy and X‐ray photoelectron spectroscopy reveal atomistic interfacial features and electronic structure supported by atomistic modeling of these interfaces.
Hebatallah Ali, Patricia König, Xuan Quy Tran, Anton Kaus, Hanna Türk, Adnan Hammud, Zahra Gheisari, Vaibhav Vibhu, Vladimir Roddatis, Franz‐Philipp Schmidt, Raoul Blume, Patrick Zeller, Till Frömling, Felix Gunkel, Axel Knop‐Gericke, Karsten Reuter, Rüdiger‐A. Eichel, Christoph Scheurer, Thomas Lunkenbein   +18 more
wiley   +1 more source

Valence-Bond Crystal, and Lattice Distortions in a Pyrochlore Antiferromagnet with Orbital Degeneracy

, 2005
We discuss the ground state properties of a spin 1/2 magnetic ion with threefold $t_{2g}$ orbital degeneracy on a highly frustrated pyrochlore lattice, like Ti$^{3+}$ ion in B-spinel MgTi$_2$O$_4$.
A. P. Ramirez, G. Jackeli, J. Villain, K. I. Kugel, M. Blume, M. Takahashi, M. Takhashi, N. B. Perkins, S. Di Matteo, S. Di Matteo, W. Harrison   +10 more
core   +1 more source

Impacts of A‐Site Composition on the Cation Dissolution‐Mediated Surface Restructuring of Layered Nickelate Oxide Electrocatalysts During Alkaline Oxygen Evolution Reaction

ChemElectroChem, Volume 13, Issue 6, 17 March 2026.
This work shows that A‐site composition dictates the restructuring of Ruddlesden–Popper nickelate oxides (A2‐xA’xNiO4; A = La, Eu, Gd; A’ = Sr; x = 0–1.5) under alkaline oxygen evolution reaction conditions and suggests that electrocatalytic stability is governed by an interplay between dissolution‐mediated site exposure and Ni oxidation state ...
Hyungdon Joo, Rachel A. Yang, Kai Sun, Eranda Nikolla   +3 more
wiley   +1 more source

Pyrochlore Photons: The U(1) Spin Liquid in a S=1/2 Three-Dimensional Frustrated Magnet

, 2003
We study the S=1/2 Heisenberg antiferromagnet on the pyrochlore lattice in the limit of strong easy-axis exchange anisotropy. We find, using only standard techniques of degenerate perturbation theory, that the model has a U(1) gauge symmetry generated by
A. Paramekanti, A.S. Goldhaber, A.W. Sandvik, C.L. Henley, D.A. Bonn, D.A. Huse, D.S. Rokhsar, E. Fradkin, G. Misguich, G.T. Barkema, J.B. Kogut, J.C. Wynn, L. Balents, L. Balents, L.D. Faddeev, Leon Balents, M. Levin, Matthew P. A. Fisher, Michael Hermele, N. Read, N. Read, N. Read, O.I. Motrunich, O.I. Motrunich, P. Fulde, P.W. Anderson, P.W. Anderson, P.W. Anderson, P.W. Leung, R. Moessner, S. Sachdev, S.-H. Lee, S.-H. Lee, T. Senthil, T. Senthil, T. Senthil, X.-G. Wen, X.-G. Wen, X.-G. Wen   +38 more
core   +1 more source

Adapting Planck's route to investigate the thermodynamics of the spin-half pyrochlore Heisenberg antiferromagnet

, 2020
The spin-half pyrochlore Heisenberg antiferromagnet (PHAF) is one of the most challenging problems in the field of highly frustrated quantum magnetism. Stimulated by the seminal paper of M.~Planck [M.~Planck, Verhandl. Dtsch. phys. Ges. {\bf 2}, 202-204 (
Derzhko, Oleg, Hutak, Taras, Krokhmalskii, Taras, Richter, Johannes, Schnack, Jürgen   +4 more
core   +1 more source

Fractional charges in pyrochlore lattices [PDF]

, 2002
A pyrochlore lattice is considered where the average electron number of electrons per site is half--integer, concentrating on the case of exactly half an electron per site.
B. KRAMER, E. MARIANI, M. SASSETTI, R. MAZZARELLO   +3 more
core   +6 more sources

Exploiting Two‐Photon Lithography, Deposition, and Processing to Realize Complex 3D Magnetic Nanostructures

Advanced Functional Materials, Volume 36, Issue 20, 9 March 2026.
Two‐photon lithography (TPL) enables 3D magnetic nanostructures with unmatched freedom in geometry and material choice. Advances in voxel control, deposition, and functionalization open pathways to artificial spin ices, racetracks, microrobots, and a number of additional technological applications.
Joseph Askey, Arjen van den Berg, Sandra Ruiz Gomez, Claire Donnelly, Dirk Grundler, Sam Ladak   +5 more
wiley   +1 more source

Quantum spin liquids: a large-S route

, 2003
This paper explores the large-S route to quantum disorder in the Heisenberg antiferromagnet on the pyrochlore lattice and its homologues in lower dimensions.
Fouet J B, Harris M J, Henley C L, Moessner R, Oleg Tchernyshyov, Schiffer P, Tchernyshyov O Yao H Moessner R   +6 more
core   +2 more sources