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48 papers · 1 filter
Torsion units in integral group rings of Conway simple groups
V. Bovdi, A. Konovalov, S. Linton
Using the Luthar--Passi method, we investigate the possible orders and partial augmentations of torsion units of the normalized unit group of integral group rings of Conway simple…
Aspects of Multi-Dimensional Modelling of Substellar Atmospheres
Ch. Helling, E. Pedretti, S. Berdyugina +6
Theoretical arguments and observations suggest that the atmospheres of Brown Dwarfs and planets are very dynamic on chemical and on physical time scales. The modelling of such subs…
Structural origin of apparent Fermi surface pockets in angle-resolved photoemission of BiSrLaCuO
P. D. C. King, J. A. Rosen, W. Meevasana +11
We observe apparent hole pockets in the Fermi surfaces of single-layer Bi-based cuprate superconductors from angle-resolved photoemission (ARPES). From detailed low-energy electron…
The role of bandstructure in the thermodynamic properties of itinerant metamagnets
A. M. Berridge
It is known that itinerant metamagnetic transitions can be driven by features in the electronic density of states. We study the signatures of these transitions in the entropy and s…
Dirac Strings and Magnetic Monopoles in Spin Ice Dy2Ti2O7
D. J. P. Morris, D. A. Tennant, S. A. Grigera +11
While sources of magnetic fields - magnetic monopoles - have so far proven elusive as elementary particles, several scenarios have been proposed recently in condensed matter physic…
Unconventional magnetization processes and thermal runaway in spin-ice DyTiO
D. Slobinsky, C. Castelnovo, R. A. Borzi +4
We investigate the non-equilibrium behavior of the spin-ice material DyTiO by studying its magnetization as a function of the rate at which an external field is swept.…