Low-dimensional quantum spin systems
- Low-dimensional spin S = 1/2 system at the quantum critical limit: Na2V3O7.
- Low Dimensional Semiconductors - UC Santa Barbara.
- Reality is just a quantum wave function | Alyssa Ney IAI TV.
- Academics in Low Dimensional Spin System - A.
- Quantum Spin Hall Effect and Topological Phase Transition in.
- PDF Quantum dynamics in low dimensional spin systems - Kyoto U.
- Magnetic light scattering in low-dimensional quantum spin systems.
- Identification and investigation of new low-dimensional quantum spin.
- Lecture Notes - Purdue University.
- PDF Transport Properties Of Low-Dimensional Quantum Spin Systems.
- NMR investigation of low dimensional quantum spin systems.
- Quantum field theory - Wikipedia.
- Browse Articles | Nature Materials.
Low-dimensional spin S = 1/2 system at the quantum critical limit: Na2V3O7.
About. Physica E: Low-dimensional systems and nanostructures contains papers and invited review articles on the fundamental and applied aspects of physics in low-dimensional electron systems, in semiconductor heterostructures, oxide interfaces, quantum wells and superlattices, quantum wires and dots, novel quantum states of matter such as topological insulators, and Weyl semimetals. At low temperatures, the BEC was observed in Heisenberg or axially symmetric low-dimensional magnets with spin-singlet ground state, e.g., spin-1/2 dimers 21,22,23,24,25 and composite integer spin. Topological phases of matter is a natural place for encoding robust qubits for quantum computation. In this work we extend the newly introduced class of qubits based on valence-bond solid models with SPT symmetry-protected topological order to more general cases. Furthermore, we define and compare various classes of topological qubits encoded in the bulk ground states of topological systems.
Low Dimensional Semiconductors - UC Santa Barbara.
Low dimensional quantum gases T. Giamarchi.... dimensional systems.... Low energy properties: Luttinger liquid fermions, bosons, spins... Luttinger parameters. Attractive Hubbard model TG B. S. Shastry PRB 51 10915 1995 Quantitative#x27;#x27; theory possible. Abstract: 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.
Reality is just a quantum wave function | Alyssa Ney IAI TV.
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.
Academics in Low Dimensional Spin System - A.
View Academics in Low Dimensional Quantum Spin System on A.
Quantum Spin Hall Effect and Topological Phase Transition in.
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 quot;exoticquot; phases, such as the Bose-Einstein.
PDF Quantum dynamics in low dimensional spin systems - Kyoto U.
The new insight obtained by Zak et al. [3] makes it possible to assess the stability of ferromagnetic order of nuclear or impurity spins in such a low-dimensional system [5]. The possibility to freeze nuclear magnetic moments in a ferromagnetic state would increase the prospect of realizing spin-based quantum bits having sufficiently long.
Magnetic light scattering in low-dimensional quantum spin systems.
In theoretical physics, quantum field theory QFT is a theoretical framework that combines classical field theory, special relativity, and quantum mechanics.: xi QFT is used in particle physics to construct physical models of subatomic particles and in condensed matter physics to construct models of quasiparticles. A canonical example for 3D AF spin systems is the cubic, quasi-isotropic compound KNiF 3 in which magnetic energy fluctuations for temperatures close to the Neel ordering T N =248.5 K give rise to quasielastic scattering [452]. In low-dimensional spin systems quasielastic scattering is a very general feature, too. Thermal engineering of quantum devices has attracted much attention since the discovery of quantized thermal conductance of phonons. Although easily submerged in numerous excitations in macrosystems, quantum behaviors of phonons manifest in nanoscale low-dimensional systems even at room temperature.
Identification and investigation of new low-dimensional quantum spin.
Gas. Second, quantum phase transitions in magnetic insulators will b e discussed with a partic-ular focus on low-dimensional spin systems like chains and ladders. Th ird, we review quantum phase transition in metals. We introduce the Hertz-Millis model and dis cuss its successes and shortcomings. This thesis focuses on one area of modern condensed matter physics, namely low-dimensional magnetism, and more specifically one-dimensional linear chains. The work herein can be split into three parts. The first part provides a tool for the greater community. I herein propose a Pad e approximation for the temperature dependent magnetic susceptibility of a S = 3/2 spin chain, that is more.
Lecture Notes - Purdue University.
Physica E: Low-dimensional systems and nanostructures contains papers and invited review articles on the fundamental and applied aspects of physics in low-dimensional electron systems, in semiconductor heterostructures, oxide interfaces, quantum wells and superlattices, quantum wires and dots, novel quantum states of matter such as topological insulators, and Weyl semimetals. Thermal engineering of quantum devices has attracted much attention since the discovery of quantized thermal conductance of phonons. Although easily submerged in numerous excitations in macrosystems, quantum behaviors of phonons manifest in nanoscale low-dimensional systems even at room temperature.
PDF Transport Properties Of Low-Dimensional Quantum Spin Systems.
Introduction. The two-dimensional electron gas 2DEG formed in a GaAs-AlGaAs heterostructure is a very fruitful system for investigating quantum and interaction effects. Electrons are confined to a very narrow layer, becoming effectively two-dimensional. At low temperatures and with high quality material, electrons can travel many microns. Introduction. Low-dimensional magnets have long been a playground for discovering unconventional physics. 1-3 From an experimental point of view, ideal systems have strong magnetic coupling in one- or two-dimensional units, which are well isolated from each other. This includes magnetic chains, which are hosts to spinon quasi-particles that fractionalise electrons by carrying their spin but. 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.
NMR investigation of low dimensional quantum spin systems.
We study the spin-Peierls SP transition of one-dimensional chain polymeric complexes coupled to lattice by means of many-body Green#x27;s function theory.... Spin-Peierls transition in low-dimensional quantum spin systems: a Green#x27;s function approach Phys Chem Chem Phys. 2009 Dec 28;1148:11415-23. doi: 10.1039/b913654a. Epub 2009 Oct 20. The question of whether quantum fluctuations are able to eliminate long-range order LRO in low-dimensional quantum spin systems with planar symmetry at T equals 0, is studied using a recently developed renormalization-group approach to the investigation of LRO at T equals 0. The solutions of the RG equations point to the existence of order in.
Quantum field theory - Wikipedia.
Here we utilize low-temperature specific heat and thermal conductivity measurements to study the low-lying magnetic excitations in CoNb 2 O 6 and its spin-1 analog NiNb 2 O 6. The thermal conductivity is found to be suppressed around the quantum critical point, where the specific heat is enhanced due to gapless magnetic excitations, pointing to. In quantum wells grown in the [001] direction, the cubic or spherical symmetry is broken down to the axial rotation symmetry in the plane. These six bands combine to form the spin-up and spin-down states of three quantum well subbands: E1, H1, and L1.
Browse Articles | Nature Materials.
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