2024 Spin-peierls transition

Spin-peierls transition

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August undefined, 2024

WebAbstract. We study the spin-Peierls (SP) transition of one-dimensional chain polymeric complexes coupled to lattice by means of many-body Green’s function theory. The chain … WebMar 28, 2024 · The spin-Peierls transition is considered as a progressive spin-lattice dimerization occurring below a transition temperature in a system of one-dimensional antiferromagnetic Heisenberg chains. In … Expand. 219. Highly Influential. PDF. View 4 excerpts, references results; Save. Alert.

Spin-Peierls Distortion of TiPO4 Causing a Transition from a …

WebThere are problems at the end of each chapter, many of which serve to expand or explain the material in the text. The bibliographies for each chapter give an entry to the research … Peierls' theorem states that a one-dimensional equally spaced chain with one electron per ion is unstable. This theorem was first espoused in the 1930s by Rudolf Peierls. It can be proven using a simple model of the potential for an electron in a 1-D crystal with lattice spacing . The periodicity of the crystal creates energy band gaps in the $${\displ… personal record keeper

Continuous and discontinuous quantum phase transitions in a ... - PNAS

WebAbstract. We present an organic compound exhibiting spin-Peierls (SP) transition to an effective spin-1 antiferromagnetic uniform chain, that is, the Haldane chain. The clear disappearance of magnetization, accompanied by a structural phase transition, is well explained by the deformation to an effective spin-1 Haldane chain. WebThis communication reports the first spin-Peierls transition in metal complexes in which pure d electrons contribute to the magnetism. In addition, we demonstrated a new experimental method for studying a spin-Peierls system. * personal record keeping

Synergistic Spin Transition between Spin Crossover and Spin‐Peierls …

s_1_2xxz反铁磁链的Spin_Peierls相变研究 - 豆丁网

WebJul 1, 1997 · Spin-Peierls transition; CuGeO3; Effects of substitution; Antiferromagnetic order 1. Introduction Hase et al. [1] have discovered the spin-Peierls (SP) transition in CuGeO3, which is the first inorganic SP compound. After this discovery, the SP transi- tion and CuGeO3 have attracted much attention. The 1 one-dimensional SP transition may … WebThe most studied case of the Ising model is the translation-invariant ferromagnetic zero-field model on a d-dimensional lattice, namely, Λ = Z d, J ij = 1, h = 0.. No phase transition in one dimension. In his 1924 PhD thesis, … personal records organizerWebCalculations are done for S=1/2, 1, 3/2, and 2. Qualitative differences are found between half-integer and interger spins. Our results (i) indicate the absence of the spin-Peierls … standlock bottle shop colfax ca

"WebMagnetic-susceptibility and EPR measurements are reported which provide the first unambiguous evidence for a spin-Peierls transition in a system of linear one-dimensional antiferromagnetic Heisenberg chains. The material studied is TTFCu S 4 C 4 (C F 3) 4 (TFF stands for tetrathiafulvalinium). At 12 K, the spin-lattice system undergoes a second ... " - Spin-peierls transition

Spin-peierls transition

Spin-Peierls Distortion of TiPO4 Causing a Transition from a …

WebJan 1, 2013 · The phase transition and the phase diagram between the adiabatic and antiadiabatic limits in the spin-Peierls model will be investigated in this chapter. As we explained in Chap. 3 , the conventional quantum Monte Carlo... http://web.mit.edu/ceder/publications/prb-67-02045-2003.pdf

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WebJul 1, 1978 · So the usual Peierls arguments show that the system must dimerize as temperature decreases and the energy gap for magnetic triplet excitations must appear as the result of such distortions.The transition of this type is called now Spin-Peierls (SP) transition. The conclusion about the existence of SP in- - 1.2 1.8 y ohi/Tco Fig. 1. Weborbital ordering produces quasi-one-dimensional spin chains and that TiOCl is an example of Heisenberg chains that undergo a spin-Peierls transition. The energy scale is an order of …

WebWe develop a new theory of the spin-Peierls transition in spin-\textonehalf{} Heisenberg chains, treating the phonons in a mean-field random-phase approximation (RPA) as in previous work, but calculating the relevant response functions of the spin system using the procedure of Luther and Peschel. We show that the RPA on the phonons (and therefore … http://staff.ustc.edu.cn/~zqj/posts/Peierls-Transition/

Webof the spin-Peierls transition, we need to evaluate the mean ﬁeld displacement hui, or equivalently, the parameter δ in a self- consistent manner i.e., the value of δwhich … Web豆丁网是面向全球的中文社会化阅读分享平台，拥有商业,教育,研究报告,行业资料,学术论文,认证考试,星座,心理学等数亿实用 ...

WebFeb 7, 2024 · The spin-Peierls transition at T SP of spin-1 2 chains with isotropic exchange interactions has previously been modeled as correlated for T > T SP and mean field for T < …

Websignal is reduced and phosphorescence is generated. Spin-orbit coupling is a quantum mechanical process that is responsible for intersystem crossing. Intersystem crossing … personal record review ipermsWebFeb 7, 2024 · The spin-Peierls transition at T SP of spin-1 2 chains with isotropic exchange interactions has previously been modeled as correlated for T > T SP and mean field for T < T SP. We use correlated states throughout in the J 1 − J 2 model with antiferromagnetic exchange J 1 and J 2 = α J 1 between first and second neighbors, respectively, and ... personal records retention guidelines irsWebThe spin-Peierls transition (18, 19) is a peculiar magnetoelastic transition that may take place in a limited series of quasi ID insulating systems (20, 286). It is interesting to note that, for once, this behavior had been theoretically predicted for organic free radicals (18, 19) long before its experimental observation. personal record keeping templateWebDec 28, 2009 · We study the spin-Peierls (SP) transition of one-dimensional chain polymeric complexes coupled to lattice by means of many-body Green's function theory. The chain … stand locationsWebJan 21, 2014 · Synergistic Spin Transition between Spin Crossover and Spin‐Peierls‐like Singlet Formation in the Halogen‐Bonded Molecular Hybrid System: [Fe (Iqsal)2] [Ni … stand lotiWebAt TCO=103K a charge ordering (CO) occurs, and at TSP (B=9T)=11K the material undergoes a spin-Peierls transition. Within the intermediate, CO … personal recount picture booksWebJan 30, 2012 · A Lattice constant evolution up to high pressure, showing continuous behavior through the region where the spin gap closes, followed by a structural phase transition at 4.5–4.7 GPa, associated theoretically with a transition into a fully ordered antiferromagnetic state. personal records template