• Study Resource
  • Explore
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Giant spin Seebeck effect in a non
Giant spin Seebeck effect in a non

... the spin-splitting energy through spin–orbit interactions. Owing to the simultaneously strong phonon–electron drag and spin–orbit coupling in InSb, the magnitude of the giant spin Seebeck voltage is comparable to the largest known classical thermopower values. At present, we understand4–6 that the s ...
Inhomogeneous liquid Superscript>4 Superscript>He: A density
Inhomogeneous liquid Superscript>4 Superscript>He: A density

... (such that its Fourier transform matches fIh(q) to reproduce (19): the appropriate width is 1.07 A). We have tested also other types of effective potentials, physically less sensible (having for instance an attractive 6function part at zero range) but also giving the right response function. We also ...
RANDOM MATRIX THEORY IN PHYSICS
RANDOM MATRIX THEORY IN PHYSICS

... un can be calculated rather easily. For large N it approaches a Gaussian. This is equivalent to the Porter– Thomas distribution. While wavefunctions are often not accessible in an experiment, one can measure transition amplitudes and widths, giving information about the matrix elements of a transiti ...
Properties of 6Li - NC State Physics
Properties of 6Li - NC State Physics

... Li has a single, unpaired valence electron. The ground state configuration is 1s2 2s1 ; while the excited state configuration is 1s2 2p1 . The simplest view of the energy levels of 6 Li, the central-field approximation, takes only this fact into account, and computes the energy of the atom assuming ...
Post-Markov master equation for the dynamics of open quantum
Post-Markov master equation for the dynamics of open quantum

... shows that for the asymptotic Eq. Ž11. to be meaningful, one has to use an effectiÕe initial condition w4x obtained by fully determining the initial slip arising from the time dependent coefficients g i Ž t . in the true master Eq. Ž10.. We show numerically that Ž10. preserves the positivity of the ...
Chapter 10 Pauli Spin Matrices
Chapter 10 Pauli Spin Matrices

Problems Chapter 9
Problems Chapter 9

... Our problem has only two states, conventionaly denoted by È +\ and È -\The . constant E0 given in the text of the exercise is just an additive constant to the energy and will be disregarded from now on. The Hamiltonian can be considered in a form H = H0 + V; H0 = ...
Manipulation of electron spin in a quantum dot D. G
Manipulation of electron spin in a quantum dot D. G

Rotational States of Magnetic Molecules
Rotational States of Magnetic Molecules

... Here the first term is the energy of the rotation with mL = ±S. For a molecule rigidly coupled to an infinite mass one has I → ∞ and the energy of the rotation goes to zero. In this case one recovers from Eq. (16) the energies, ±∆/2, of the tunnel-split spin states in a macroscopic crystal. As α inc ...
entanglement properties of quantum many
entanglement properties of quantum many

... used to describe strongly correlated quantum many-body systems in condensedmatter physics, hadronic physics, and quantum chemistry. The information gained in such a program should improve our understanding of quantum phase transitions occurring in these systems as well as their behavior in regions a ...
Quantum orders in an exact soluble model
Quantum orders in an exact soluble model

... (FQH) states discovered in 1982[3, 4] opened a new chapter in condensed matter physics. The theory of phases and phase transitions entered into a new era. This is because all different FQH states have the same symmetry and hence cannot be described by the Landau’s theory. In 1989, it was realized th ...
Phys. Rev. Lett. 104, 126401
Phys. Rev. Lett. 104, 126401

... The effective model and the exact data agree very well for all interdot couplings, as seen in Fig. 2. At zero magnetic field, only the first and the last term in Eq. (15) survive. This is the result of Ref. [20], where primed operators were used to refer to the fact that the Hamiltonian Hex refers t ...
Field-Induced Gap in a Quantum Spin
Field-Induced Gap in a Quantum Spin

... when the field approaches the saturated phase the energy gap is a non-monotonous function of the field, and that it presents a minimum around the saturation field before the linear increase above saturation. This result has been understood in analytical terms somewhat later by Fouet et al. [21], who ...
Realizing unconventional quantum magnetism with symmetric top molecules M. L. Wall
Realizing unconventional quantum magnetism with symmetric top molecules M. L. Wall

... in particular its rotational angular momentum, to an effective spin, the dipole-dipole interaction hence generates the possibility of unconventional models of quantum magnetism which do not conserve the total magnetization. As we will show in this paper, such models feature tunable degrees of both s ...
Higher Spin Theories and Holography
Higher Spin Theories and Holography

Longitudinal and Transverse Zeeman Ladders in the
Longitudinal and Transverse Zeeman Ladders in the

Quantum annealing with manufactured spins
Quantum annealing with manufactured spins

... levels in the flux qubit start to become thermally occupied. The fourlevel quantum model describes the behaviour of the system well up to 80 mK, where more energy levels start to be occupied. The experimental data asymptotically approach the classical simulation results at higher temperatures. We pr ...
Planck`s law as a consequence of the zeropoint radiation field
Planck`s law as a consequence of the zeropoint radiation field

... is canonically distributed, that it has the correct classical behaviour when T → ∞, and that cV remains finite at T = 0 (in agreement with the third law of thermodynamics), are widely acknowledged as reasonable assumptions both in classical and quantum physics, and they clearly do not contain any qu ...
1 An Engineer`s Guide to Quantized Angular Momentum The
1 An Engineer`s Guide to Quantized Angular Momentum The

... For homonuclear molecules, e.g. H2, D2, O2(16O16O), etc. the effects of nuclear spin must be considered when computing both the rotational partition function and the fractional populations. The overall wave function describing the system must be symmetric with respect to exchange of identical bosons ...
NUCLEAR-ELECTRON COUPLING IN GAAS SPIN STATES AND
NUCLEAR-ELECTRON COUPLING IN GAAS SPIN STATES AND

... 8.4, and 14 nm[7]. All of our results on the quantum-well sample were done on the 14 nm well, which was selected by tuning the probe laser to match the exciton wavelength of that well. Electron spin resonance techniques (ESR), including ...
Electron-electron interactions in a one-dimensional quantum
Electron-electron interactions in a one-dimensional quantum

... At the single electron level this device has the advantage of working as a spin filter. We have characterized the influence of electron electron interactions in this same device. We found that in the most relevant case 共EF − E␣ Ⰶ 1兲 where the total transmission remains close to unity for a range of ...
M o
M o

... thermal collisions is sufficient to place many nuclei into higher energy spin states. The numbers of nuclei in each spin state are described by the Boltzman distribution ...
Electronic Structure of Multi-Electron Quantum Dots
Electronic Structure of Multi-Electron Quantum Dots

... [11] employed matrices of dimensions up to 108,375 with 67,521,121 nonzero elements for a six-electron quantum dot. Calculations for any higher number of electrons were not considered numerically viable using the conventional CI formalism, even with state-of-the-art computing facilities. We have rec ...
104,18415 (2007)
104,18415 (2007)

Simple Theory of the Magnetic Properties of Rare
Simple Theory of the Magnetic Properties of Rare

... man-Kittel" contact interaction" or the extended itinerant electx on-exchange mechanism' responsible for the spin-density wave state of chromium. The exchange in this case is perfectly localized and restricted to f-electron-f-electron interaction in the same ionic site; it is in this sense a strongl ...
< 1 ... 33 34 35 36 37 38 39 40 41 ... 72 >

Ising model

The Ising model (/ˈaɪsɪŋ/; German: [ˈiːzɪŋ]), named after the physicist Ernst Ising, is a mathematical model of ferromagnetism in statistical mechanics. The model consists of discrete variables that represent magnetic dipole moments of atomic spins that can be in one of two states (+1 or −1). The spins are arranged in a graph, usually a lattice, allowing each spin to interact with its neighbors. The model allows the identification of phase transitions, as a simplified model of reality. The two-dimensional square-lattice Ising model is one of the simplest statistical models to show a phase transition.The Ising model was invented by the physicist Wilhelm Lenz (1920), who gave it as a problem to his student Ernst Ising. The one-dimensional Ising model has no phase transition and was solved by Ising (1925) himself in his 1924 thesis. The two-dimensional square lattice Ising model is much harder, and was given an analytic description much later, by Lars Onsager (1944). It is usually solved by a transfer-matrix method, although there exist different approaches, more related to quantum field theory.In dimensions greater than four, the phase transition of the Ising model is described by mean field theory.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report