Spin ice
Low temperature magnetisation properties of the spin ice material Dy₂Ti₂O₇
... particular, spin ice can be prepared to obtain high magnetic contrast by polarising all spins to form the ‘x’ configuration in each tetrahedron via a strong enough magnetic field in the [100] ...
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Mean field theory for confinement transitions and magnetization plateaux in spin ice
... The lobe structure of the phase diagram follows immediately from this observation. Starting within a confining phase and changing the applied field will eventually tip the balance in favor of the Coulomb phase, whose ...
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Antiferroquadrupolar correlations in the quantum spin ice candidate Pr2Zr2O7
... the spin dynamics consists in a broad low-energy response whose structure factor resembles the specific pattern observed in classical spin ice, with armlike features along the (00) and (hhh) ...
17
Spin ice state in frustrated magnetic pyrochlore materials
... Each spin axis is along the local h111i quantization axis, which goes from one site to the middle of the opposing triangular face (as shown by the disks) and meets with the three other h111i axes in the middle of ...
11
Micromagnetic Investigation of Microwave Permeability of Magnetic Artificial Spin Ice
... The complex permeability of the artificial spin ice array at different magnetic states is calculated using the micromagnetic simulation method. It is observed that the permeability spectra are de- pendent ...
6
Experimental signature of the attractive Coulomb force between positive and negative magnetic monopoles in spin ice
... As emphasised above, the exp( √ H) behaviour is a defining characteristic of conduction in Coulomb gases where the deviation from Ohm’s law arises from the field-induced unbinding of microscopic charge pairs 1–3 . In ...
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Breakdown of a topological transition in two dimensional spin ice due to geometry effects
... the ice rules ...the spin field at a local level ...the ice-rule behave as magnetically charged ...the ice- rules are strictly enforced. The ice rule applied to every tetrahedron means ...
6
Entropy as a function of magnetisation for a 2D spin ice model exhibiting a Kasteleyn transition
... the spin ice model that we shall study, discuss its relationship to other models in the literature, and provide some analytical and numerical results on its thermodynamic properties in the absence of an ...
11
Disorder and quantum spin ice
... order parameter is already suppressed [see Fig. 5(a)], but antiferroquadrupolar correlations on neighboring sites are found to survive (see Fig. 4). However, owing to uncer- tainties on the precise value of δ v, we ...
11
Monopole ordered phases in dipolar and nearest neighbors Ising pyrochlore : from spin ice to the all in all out antiferromagnet
... dipolar model gives rise to a phase diagram which is quite comparable with those previously obtained for on-lattice systems of electric charges [29], and on spin ice models with a conserved number of single ...
8
Observation of magnetic fragmentation in spin ice
... positive, i.e. when the dipolar term overcomes the an- tiferromagnetic exchange, a very unusual magnetic state develops, the spin ice state. The system remains in a highly correlated but disordered ground ...
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Thermodynamics of the classical spin ice model with nearest neighbour interactions using the Wang Landau algorithm
... the spin projection) with the term arising from the entropic gain per segment (T ln ...the ice-rule is pre- served in the whole sample, that is to say, the Kasteleyn transition occurs between different ...
9
Candidate quantum spin ice in the pyrochlore Pr2Hf2O7
... stabilize spin liquids [1,2]. Of special interest are quantum spin liquids (QSLs), which arise from long-range entanglement in the ground state wave function [3,4] and which host fractionalized ...
8
Ferromagnetic Coulomb phase in classical spin ice
... in spin liquids, both classical and quantum, with magnetic ...of spin-liquid phases is fractional- ized excitations, such as magnetic monopoles in spin ice and spinons in quantum ...
12
Ladder Studies of Gapless Quantum Spin Liquids: Spin Bose metal and SU(2) invariant Majorana Spin Liquids
... quantum spin liquids with parton Fermi ...strong spin and spin-nematic fluctuations as manifested by the same power-law behavior in the correlations considered in our ...heat, spin ...
195
Electron Spin and Proton Spin in the Hydrogen and Hydrogen Like Atomic Systems
... of spin is ...the spin-dependent interaction energy with the field can be ...The spin magnetic moment is coupled with the spin angular momentum by a constant term which is twice as large as in ...
12
The Influence of Organo Clay Ratio in the HIPS OMMT Nanocomposites Analyzed by Proton Spin Lattice and Spin Spin Relaxation Times
... In the present work, NMR relaxometry was used to evaluate the different nanostructured materials based on high impact polystyrene and organic modified montmorillonite with the objective of obtaining responses about the ...
9
Femtosecond Spin Current Pulses Generated by the Nonthermal Spin Dependent Seebeck Effect and Interacting with Ferromagnets in Spin Valves
... Creating highly energetic electrons [5 – 9], femtosecond laser excitation is promising for SC pulse generation on subpicosecond time scales, before the electron-electron [9] and electron-lattice [8] equilibration is ...
6
Ice streams in the Laurentide Ice Sheet: Identification, characteristics and comparison to modern ice sheets
... the ice mass and the drag of the bed constitutes an important component of the force balance (Paterson, ...fast ice fl ow (Bell et ...fast ice fl ow and to exert a con- trol on the occurrence of ...
30
Proper Definition of Spin Current in Spin-Orbit Coupled Systems
... Generating pure spin current by applying electric field Present in non-magnetic semiconductors?. Mechanisms:.[r] ...
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