Low Dimensional Quantum Spin Systems

  1. Magnetic light scattering in low-dimensional quantum.
  2. Numerical study of thermal effects in low dimensional quantum spin systems.
  3. Quantum Monte Carlo Studies of Some Low-Dimensional Quantum.
  4. Highly Mobile Gapless Excitations in a Two-Dimensional.
  5. Exact solution of two-dimensional (2D) Ising model with... - ScienceDirect.
  6. PDF Transport and dynamics of low-dimensional quantum spin systems.
  7. Quantum magnetism in low dimensional spin systems.
  8. [PDF] Low-dimensional Quantum Spin Systems | Semantic Scholar.
  9. Low dimensional quantum spin systems.
  10. Low Dimensional Systems in a Sentence.
  11. Emergent Hydrodynamics in Low Dimensional Quantum Systems.
  12. Cooling low-dimensional electron systems into the microkelvin.
  13. Magnetic light scattering in low-dimensional quantum spin systems.
  14. The Fascinating World of Low-Dimensional Quantum Spin.

Magnetic light scattering in low-dimensional quantum.

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Numerical study of thermal effects in low dimensional quantum spin systems.

In the context of the actual system of interest, we consider low-dimensional sys-tems throughout this thesis – systems in two-dimension to be precise. The dimension-ality of our system is relevant, since the quantum fluctuation in general gets stronger in lower dimensions. This means that the mean-field theory results, which is exact. We provide a detailed comparison between the dynamics of high-temperature spatiotemporal correlation functions in quantum and classical spin models. In the quantum case, our large-scale numerics are based on the concept of quantum typicality, which exploits the fact that random pure quantum states can faithfully approximate ensemble averages, allowing the simulation of spin-$1/2$ systems with.

Quantum Monte Carlo Studies of Some Low-Dimensional Quantum.

DOI: 10.1016/S0370-1573(02)00321-6 Corpus ID: 119524490; Magnetic light scattering in low-dimensional quantum spin systems @article{Lemmens2003MagneticLS, title={Magnetic light scattering in low-dimensional quantum spin systems}, author={Peter Lemmens and Gernot Guntherodt and Claudius Gros}, journal={Physics Reports}, year={2003}, volume={375}, pages={1-103} }.

Highly Mobile Gapless Excitations in a Two-Dimensional.

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Exact solution of two-dimensional (2D) Ising model with... - ScienceDirect.

The exact solution of ferromagnetic two-dimensional (2D) Ising model with a transverse field, which can be used to describe the critical phenomena in low-dimensional quantum spin systems, is derived by equivalence between the ferromagnetic 2D Ising model with a transverse field and the ferromagnetic three-dimensional (3D) Ising model. In recent times, ab initio density functional theory has emerged as a powerful tool for making the connection between models and materials. Insulating transition metal oxides with a small spin forms a fascinating class of strongly correlated systems that exhibit spin-gap states, spin–charge separation, quantum criticality, superconductivity, etc. The coupling between spin, charge, and. Low-dimensional quantum spin systems are interacting many body systems for which several rigorous results are known. Powerful techniques like the Bethe Ansatz provide exact knowledge of the ground state energy and low-lying excitation spectrum. A large number of compounds exists which can effectively be described as low-dimensional spin systems.

PDF Transport and dynamics of low-dimensional quantum spin systems.

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Quantum magnetism in low dimensional spin systems.

Fundamental new paradigms have appeared, such as the Generalized Gibbs Ensembles, and new questions have arisen, that are crucial to understand transport in low-dimensional quantum systems, such as, for instance, about the possible fractal nature of the Drude weight that governs spin conductivity in integrable quantum spin chains. This timely.

[PDF] Low-dimensional Quantum Spin Systems | Semantic Scholar.

Bajnok – Ads/CFT Correspondence From an Integrable Point of View. Bajnok – Finite Volume Diagonal Form Factors and AdS/CFT. Batchelor – The Mixed Ferro-Antiferromagnetic 3-state Quantum Potts Chain, Quantum Chiral Clock Model and Free Parafermions. Braak – Integrable and Non-Integrable Models in Quantum Optics. Quantum spin systems are insulating crystals containing regular array of atoms carrying spin S = 1/2 or 1, described by simple spin Hamiltonians. In low-dimensional model compounds, we study by Nuclear Magnetic Resonance (NMR), which is a microscopic probe to magnetism, the magnetic-field-induced "exotic" phases, such as the Bose-Einstein.

Low dimensional quantum spin systems.

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Low Dimensional Systems in a Sentence.

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.... Spin-Peierls transition in low-dimensional quantum spin systems: a Green's function approach Phys Chem Chem Phys. 2009 Dec 28;11(48):11415-23. doi: 10.1039/b913654a. Epub 2009 Oct 20.

Emergent Hydrodynamics in Low Dimensional Quantum Systems.

Two-dimensional (2D) quantum materials offer a unique platform to explore mesoscopic phenomena driven by interfacial and topological effects. Their tunable electric properties and bidimensional nature enable their integration into sophisticated heterostructures with engineered properties, resulting in the emergence of new exotic phenomena not accessible in other platforms.. 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 effective elastic constant is an intrinsic factor that determines the order of SP transition. It is found that the SP transition temperature TSP a.

Cooling low-dimensional electron systems into the microkelvin.

Computater tutorials on quantum Monte Carlo methods and applications. • Theory Winter School, National High Magnetic Field Laboratory, Tallahassee, Florida, January 9-13, 2012. Two lectures: 1) Stochastic Series Expansion Algorithms for Quantum Spin Systems 2) Quantum Monte Carlo simulations of deconfined quantum criticality.

Magnetic light scattering in low-dimensional quantum spin systems.

Spin-1/2 antiferromagnetic chain [3], the different nature of integer and half-integer spin chains (which are gapped or gapless, respectively) [4, 5], or the connections between high temperature supeconductivity and quantum magnetism in a 2D square lattice [6]. More specifically, low-dimensional quantum magnets like spin chains or ladders. The item Field theories for low-dimensional condensed matter systems spin systems and strongly correlated electrons, Giuseppe Morandi [and others] (eds.) represents a specific, individual, material embodiment of a distinct intellectual or artistic creation found in Missouri University of Science & Technology Library.

The Fascinating World of Low-Dimensional Quantum Spin.

Quantitative disorder effects in low-dimensional spin systems. The Imry-Ma phenomenon, predicted in 1975 by Imry and Ma and rigorously established in 1989 by Aizenman and Wehr, states that first-order phase transitions of low-dimensional spin systems are `rounded' by the addition of a quenched random field to the quantity undergoing the..


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