2024 Spin 1/2 dimer chain specific heat

Spin 1/2 dimer chain specific heat

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WebFeb 15, 2024 · (Left panel) Magnetization curves of the spin-1 2 Heisenberg octahedral chain with J 2 / J 1 = 1.8 obtained from the effective monomer-dimer model (MDM) vs the exact … WebFIG. 4. Magnetic phase diagram of Ba3Mn2O8. The circles are the positions of the peaks and shoulders in the specific heat at constant magnetic fields. The diamonds are the positions of the peaks and shoulders in the specific heat measured as a function of the magnetic field, while the current for the reservoir heater was held constant. The lines are …

[PDF] Low-temperature thermodynamics of spin-1/2 orthogonal …

WebFigure 1. Heat capacity (in units of k) as a function of the temperature T for a spin 1/2 dimer for both ferromagnetic (J > 0) and anti-ferromagnetic (J < 0) coupling between the spins. … Webanomalous behaviour of the dimer-chain iridate Ba 5AlIr 2O 11 S.V. Streltsov1,2, J. Terzic3, J. C ... Furthermore, according to our structural, transport, magnetic and specific heat measurements, it undergoes an intra-dimer charge ordering below T ... localized spin S=3/2, and the electrons on partially-filled e g levels in, say, La 1-xSr xMnO ... how clear out clutter

Covalency and spin-orbit coupling against double exchange: …

WebAug 5, 2011 · Abstract Heat-capacity and susceptibility measurements have been performed on the diluted spin dimer compound Ba₃ (Mn 1-x V x )₂O₈. The parent compound Ba₃Mn₂O₈ is a spin dimer system based on pairs of antiferromagnetically coupled S=1, 3d² Mn⁵⁺ ions such that the zero-field ground state is a product of singlets. WebFeb 2, 2015 · Alternating antiferromagnetic spin 1/2 chains and ladders exhibit spin dimers as the ground state. In particular, Cu (NO 3) 2 ⋅ 2.5D 2 O and NH 4 CuPO 4 ⋅ H 2 O have … WebWe present numerical and analytical results for the thermodynamical properties of the spin-1/2 Heisenberg chain at arbitrary external magnetic field. Special emphasis is placed on … how many planets including dwarf planets

[2101.11926] Modified strong-coupling treatment of a …

Exact solution for a quantum spin-$\\frac{1}{2}$ Ising …

WebMagnetic susceptibility and specific heat versus temperature measurements on polycrystalline samples of Sr3Cr2O8 and the isostructural, nonmagnetic compound Sr3V2O8 are reported. A Curie-Wiess fit to the high-temperature susceptibility data for Sr3Cr2O8 indicates that the Cr atoms are in the rare Cr^5+ (Spin S = 1/2) valence state as expected … WebMay 1, 2024 · Consequently, the spin-1 2 Heisenberg octahedral chain can be described by the one-dimensional lattice-gas model of hard-core monomers given by the Hamiltonian H … how clear npm cacheWebSep 20, 2024 · For instance, you can imagine that if there's a very strong magnetic field that wants to align the spins to face downwards, then will be close to -1. Or that if you heat everything up to very hot, then all the spins are scrambled to be randomly up or down, so will be close to 0. For the 1D Ising model, is the same for all values of . how clear my browser

"WebNov 30, 2011 · We report on magnetization and specific heat measurements on single-crystalline CuTe 2 O 5.The experimental data are directly compared to theoretical results for two different spin structures, namely an alternating spin-chain and a two-dimensional (2D) coupled dimer model, obtained by Das et al. [Phys. Rev. B 77, 224437 (2008)].While the … " - Spin 1/2 dimer chain specific heat

Spin 1/2 dimer chain specific heat

$Exact solution for a quantum spin-$\\frac{1}{2}$ Ising …$

WebJan 28, 2024 · Quantum spin-1/2 antiferromagnetic Heisenberg trimerized chain with strong intradimer and weak monomer-dimer coupling constants is studied using the novel many-body perturbation expansion, which is developed from the exactly solved spin-1/2 Ising-Heisenberg diamond chain preserving correlations between all interacting spins of the … WebThe investigated quantum spin system exhibits at zero temperature fractional plateaux at 1/4 and 1/2 of the saturation magnetization and it has a highly degenerate ground state at …

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WebThe investigated quantum spin system exhibits at zero temperature fractional plateaux at 1/4 and 1/2 of the saturation magnetization and it has a highly degenerate ground state at … WebJul 13, 2024 · (a) Specific heat C v of the isotropic (g = 1) spin-1 / 2 Kitaev chain on a closed chain of length L = 6 (red), 8 (green), 10 (blue), and 12 (pink). The solid circles mark the …

WebJul 1, 2005 · From this one might suggest a uniform spin-1 / 2 Heisenberg antiferromagnetic chain model for CaCuGe 2 O 6. However, the magnetic susceptibility of CaCuGe 2 O 6 … WebOct 1, 2024 · Very recently, the magnetic properties and the specific heat in a spin-1/2 Ising–Heisenberg butterfly-shaped chain have been investigated, [ 46] however, up to now the thermal entanglement properties in the Ising–Heisenberg butterfly-shaped spin chain model has not been discussed yet.

WebOct 21, 2013 · The quantum spin-12orthogonal-dimer chain with the Heisenberg intradimer and Ising interdimer interactions in a magnetic field is considered by a rigorous approach. The model conserves the zcomponent of total spin on vertical Heisenberg bonds, and this property is used to calculate exactly the partition function using the transfer-matrix method. Web2 =(g−1) e¯h 2m B int ·S = 2(g−1)Z eh¯ 2m 2 1 r3 l·S. H 1 is the interaction of the spin angular momentum with an external magnetic ﬁeldB. We have added the spin angular momentum to the orbital angular momentuml, which is a function of real space variables (recalll =r×p. H 2 is the interaction of the spin angular momentum with the ...

WebAug 3, 2013 · Download PDF Abstract: We revisit the description of the low-energy singlet sector of the spin-1/2 Heisenberg antiferromagnet on kagome in terms of an effective …

WebJun 3, 2013 · Exact solution for quantum spin-1/2 Ising-Heisenberg orthogonal-dimer chain with the Heisenberg intra-dimer and Ising inter-dimer interactions Taras Verkholyak, Jozef Strecka The quantum spin-1/2 orthogonal-dimer chain with the Heisenberg intra-dimer and Ising inter-dimer interactions in a magnetic field is considered by a rigorous approach. how many planets in astrologyWebFigure 2. Heat capacity (in units of k) for ferromagnetically coupled dimers with S = 1=2; 1; 3=2; and 2. 3.1 Ferromagnetic Case (J > 0) I will now discuss the speciﬁc heat trends for a ferromagnetic system with spin half, one, three-half, and two dimers. The speciﬁc heat curves for each case are presented in Fig. 2 where we see several how clear output in pythonWebOct 15, 2024 · J. Strecka, T. Verkholyak, J. Richter, K. Karlova, O. Derzhko, J. Schnack It is evidenced that effective lattice-gas models of hard-core monomers and dimers afford a proper description of low-temperature features of spin-1/2 Heisenberg diamond and octahedral chains. how clear outlook address cachedWebApr 10, 2024 · A robust interplay of intra-dimer and inter-dimer (both intra-chain and inter-chain) contacts has been used to explain the long-range antiferromagnetic ordering. ... entire spin entropy of Mn 2 ... how clear pdf formWebApr 11, 2024 · Download Citation Cycloidal spiral magnetic structures in the spin-chain compounds Ba R Fe O 4 ( R = Yb and Tm): Ordered Yb versus partly ordered Tm BaRFeO4 compounds containing magnetic rare ... how clear netflix historyWebThe magnetic susceptibility chi and specific heat C versus temperature T of the spin-1/2 antiferromagnetic alternating-exchange (J1 and J2) Heisenberg chain are studied for the entire range 0 \leq alpha \leq 1 of the alternation parameter alpha = J2/J1. how clearpay worksWebMay 1, 2024 · Low-temperature magnetization curves and thermodynamics of a spin-1/2 Heisenberg octahedral chain with the intra-plaquette and monomer-plaquette interactions are examined within a two-component lattice-gas model of hard-core monomers, which takes into account all low-lying energy modes in a highly frustrated parameter space … how clear out icloud storage