Spin 1/2 dimer chain specific heat

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August undefined, 2024

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 … WebFor example, for an Ising model with one spin, H= hs 1, the partition function is Z= Tr e h 0 0 e h = e h+ e h (19) Now consider two spins, under periodic B.C., H(s 1;s 2) = Js 1s 2 Js 2s …

Phys. Rev. B 107, 115143 (2024) - Phases of the spin-$\frac{1}{2 ...

WebWe have investigated the dielectric and magnetic properties of the spin-1/2 compounds Ba3Cr2O8 and Sr3Cr2O8. For Ba3Cr2O8, the real part dielectric constant ε′ (T) exhibit a... WebSep 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 . culver flights

Magnetization process and low-temperature thermodynamics of a spin-1/2 …

WebMar 22, 2024 · The spin-1/2 Heisenberg antiferromagnet on the frustrated diamond-decorated square lattice is known to feature various zero-field ground-state phases, consisting of extended monomer-dimer and dimer-tetramer ground states as well as a ferrimagnetic regime. 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 … easton ghost x hyperlite bat

Singlet ground state in the spin-1/2 dimer compound Sr3Cr2O8

Magnetization process and low-temperature thermodynamics of a spin-1/2 …

WebMay 14, 2024 · A quantum spin- 1 2 antiferromagnetic Heisenberg trimerized chain with strong intradimer and weak monomer-dimer coupling constants is studied using the 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 … WebNov 15, 2016 · The mixed spin-(1,1/2) Ising–Heisenberg model on a distorted diamond chain with the spin-1 nodal atoms and the spin-1/2 interstitial atoms is exactly solved by the transfer-matrix method. An influence of the geometric spin frustration and the parallelogram distortion on the ground state, magnetization, susceptibility and specific heat of the … easton ghost x evolution usabatWebFigure 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 culver football 2022

"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 … " - Spin 1/2 dimer chain specific heat

Spin 1/2 dimer chain specific heat

Cycloidal spiral magnetic structures in the spin-chain

WebDec 1, 2024 · Spinon continuum and spin-singlet dimer excitations are observed in the inelastic neutron scattering spectra, which is in excellent agreement with a theoretical … 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 …

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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 … WebApr 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 ...

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 … 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 …

WebApr 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 ... 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 …

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 = E FM 0 − h ( 2 N + ∑ j = 1 N S 1, j z) − μ 1 ∑ j = 1 N n 1, j − μ 2 ∑ j = 1 N n 2, j, where n 1, j = 0 1 and n 2, j = 0 1 denote the respective occupation numbers of two kinds of the …

Webheat and (b) the specific heat divided by temperature (squares) together with theoretically suggested magnetic contributions for an alternating spin chain Calt/T(dashed) and a … culver food deliveryWebIn this paper we report results for magnetic observables of finite spin clusters composed of S = 1/2 ions. We consider clusters of two, three and four spins in distinct spatial … culver flavor of the monthWebMay 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 … culver floor coveringWeb2 =(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 ... easton ghost x hyperlite baseball batWebOct 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. culver fort atkinson wiWebFeb 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 … culver flavor.of.the dayWebJan 28, 2024 · Abstract: Quantum spin-1/2 antiferromagnetic Heisenberg trimerized chain with strong intradimer and weak monomer-dimer coupling constants is studied using the … easton ghost x hyperlite 30