Spontaneous Symmetry Breaking
... There are many examples of spontaneous symmetry breaking. The potential with positive chemical potential we discussed for Bose–Einstein condensate, the “wine-bottle” or “Mexican hat” potential is a typical example of the potential that leads to spontaneous symmetry breaking. The ferromagnet discusse ...
... There are many examples of spontaneous symmetry breaking. The potential with positive chemical potential we discussed for Bose–Einstein condensate, the “wine-bottle” or “Mexican hat” potential is a typical example of the potential that leads to spontaneous symmetry breaking. The ferromagnet discusse ...
polar molecules in topological order
... where neighbouring spins cannot attain the standard antiferromagnetic Néel order (that is, an alternating sequence of up and down spins). A more complex example is given by a Heisenberg antiferromagnet in the so-called trimerized Kagomé lattice10 (Fig. 1). The spins organize themselves in nearest-ne ...
... where neighbouring spins cannot attain the standard antiferromagnetic Néel order (that is, an alternating sequence of up and down spins). A more complex example is given by a Heisenberg antiferromagnet in the so-called trimerized Kagomé lattice10 (Fig. 1). The spins organize themselves in nearest-ne ...
Quantum Monte Carlo Study of two dimensional electron gas with
... What we get is two different eigenstates for each wavevector k, consisting of different k-dependent spin states with two different ...
... What we get is two different eigenstates for each wavevector k, consisting of different k-dependent spin states with two different ...
Presentation - Dagotto Group
... tend to antiferromagnetically couple to other Mn atoms, reducing the magnetization saturation The bonding configuration also introduces a double donor, overcompensating the single donor Mn cation subs (As antisites also are double donors) ...
... tend to antiferromagnetically couple to other Mn atoms, reducing the magnetization saturation The bonding configuration also introduces a double donor, overcompensating the single donor Mn cation subs (As antisites also are double donors) ...
Quantum-Electrodynamics and the Magnetic Moment of the
... The new Hamiltonian is superior to the original one in essentially three ways: it involves the experimental electron mass, rather than the unobservable mechanical mass; an electron now interacts with the radiation field only in the presence of an external field, that is, only an accelerated electron ...
... The new Hamiltonian is superior to the original one in essentially three ways: it involves the experimental electron mass, rather than the unobservable mechanical mass; an electron now interacts with the radiation field only in the presence of an external field, that is, only an accelerated electron ...
Optical Properties of Condensed Matters
... polymers F8. Conjugated polymers such as F8 luminesce strongly When electrons are promoted into the excited states of the molecule. The luminescence is Stokes shifted to lower energy compared to absorption, and typically occurs in the middle of the visible spectral region. The emission wavelength ca ...
... polymers F8. Conjugated polymers such as F8 luminesce strongly When electrons are promoted into the excited states of the molecule. The luminescence is Stokes shifted to lower energy compared to absorption, and typically occurs in the middle of the visible spectral region. The emission wavelength ca ...
Nitrogen-vacancy center
The nitrogen-vacancy center (N-V center) is one of numerous point defects in diamond. Its most explored and useful property is photoluminescence, which can be easily detected from an individual N-V center, especially those in the negative charge state (N-V−). Electron spins at N-V centers, localized at atomic scales, can be manipulated at room temperature by applying a magnetic field, electric field, microwave radiation or light, or a combination, resulting in sharp resonances in the intensity and wavelength of the photoluminescence. These resonances can be explained in terms of electron spin related phenomena such as quantum entanglement, spin-orbit interaction and Rabi oscillations, and analysed using advanced quantum optics theory. An individual N-V center can be viewed as a basic unit of a quantum computer, and it has potential applications in novel, more efficient fields of electronics and computational science including quantum cryptography and spintronics.