Zobrazeno 1 - 10
of 304
pro vyhledávání: '"Klemm, Richard"'
Publikováno v:
Physica Scripta vol. 99, 08219 (2024)
The exponential of an operator or matrix is widely used in quantum theory, but it sometimes can be a challenge to evaluate. For non-commutative operators ${\bf X}$ and ${\bf Y}$, according to the Campbell-Baker-Hausdorff-Dynkin theorem, ${\rm e}^{{\b
Externí odkaz:
http://arxiv.org/abs/2401.15732
Publikováno v:
J. Phys.: Condens. Matter vol. 34, art. no. 485302 (2022)
The quantum spin Hall effect has been observed in topological insulators using spin-orbit coupling as the probe, but it has not yet been observed in a metal. An experiment is proposed to measure the quantum spin Hall effect of an electron or hole in
Externí odkaz:
http://arxiv.org/abs/2204.01949
Publikováno v:
J. Phys.: Condens. Matter vol. 34, art. no. 355601 (2022)
We employ the Schr{\"o}dinger-Dirac method generalized to an ellipsoidal effective mass anisotropy in order to treat the spin and orbital effective mass anisotropies self consistently, which is important when Pauli-limiting effects on the upper criti
Externí odkaz:
http://arxiv.org/abs/2204.01246
In order to probe the transitions of a nuclear spin $s$ from one of its substate quantum numbers $m$ to another substate $m'$, the experimenter applies a magnetic field ${\bm B}_0$ in some particular direction, such along $\hat{\bm z}$, and then appl
Externí odkaz:
http://arxiv.org/abs/2203.08755
Autor:
Rain, Joseph R., Cai, PeiYu, Baekey, Alexander, Reinhard, Matthew A., Vasquez, Roman I., Silverman, Andrew C., Cain, Christopher L., Klemm, Richard A.
For a spinless quantum particle in a one-dimensional box or an electromagnetic wave in a one-dimensional cavity, the respective Dirichlet and Neumann boundary conditions both lead to non-degenerate wave functions. However, in two spatial dimensions,
Externí odkaz:
http://arxiv.org/abs/2108.07916
Publikováno v:
J. Phys.:Condens. Matter vol. 33, art. no. 085802 (2021)
When an electron or hole is in a conduction band of a crystal, it can be very different from 2, depending upon the crystalline anisotropy and the direction of the applied magnetic induction ${\bf B}$. In fact, it can even be 0! To demonstrate this qu
Externí odkaz:
http://arxiv.org/abs/1912.02101
From the Dirac equation of an electron in an anisotropic conduction band, the anisotropy of its motion dramatically affects its interaction with applied electric and magnetic fields. The quantum spin Hall effect (QSHE) is observable in two-dimensiona
Externí odkaz:
http://arxiv.org/abs/1906.10164
The Dirac equation is extended for a relativistic electron in an orthorhombically-anisotropic conduction band. Its covariance is established with general proper and improper Lorentz transformations. In the non-relativistic limit, the kinetic and Zeem
Externí odkaz:
http://arxiv.org/abs/1905.03127