Performance analysis of rigorous coupled-wave analysis and its integration in a coupled modeling approach for optical simulation of complete heterojunction silicon solar cells

• Ziga Lokar,
• Benjamin Lipovsek,
• Marko Topic and
• Janez Krc

Beilstein J. Nanotechnol. 2018, 9, 2315–2329, doi:10.3762/bjnano.9.216

• scattering matrix of outgoing waves (modes) is generated – an individual scattering matrix is generated per each discretized direction. Then this matrix is considered in iterative coupling of RCWA part with RT&TMM. In case of presented simulations, the matrices were calculated for each 5° polar incident

• angle θ and 15° azimuth incident angle , for both TE and TM polarization, for each discrete wavelength λ in the range from 350 nm to 1200 nm in steps of 10 nm. Random selection of waves was used, as given by the intensity of light in a particular direction in the scattering matrix, since the number of

Solid-state Stern–Gerlach spin splitter for magnetic field sensing, spintronics, and quantum computing

• Kristofer Björnson and
• Annica M. Black-Schaffer

Beilstein J. Nanotechnol. 2018, 9, 1558–1563, doi:10.3762/bjnano.9.147

• spin-up electrons, the only relevant matrix element for the scattering matrix is The conductance is therefore given by It is clear that the very strong dependence of the current on the magnetic flux Br2π makes this setup ideal for measuring magnetic field strength, as a potential alternative to

Revealing the interference effect of Majorana fermions in a topological Josephson junction

• Jie Liu,
• Tiantian Yu and
• Juntao Song

Beilstein J. Nanotechnol. 2018, 9, 520–529, doi:10.3762/bjnano.9.50

• describes the coupling between the left and the right topological superconducting wires. To obtain the tunneling coefficient at the junction, we use the recursive Green function method. We can then calculate the scattering matrix of the system. The scattering matrix is related to the Green functions via

• Here, is an element of the scattering matrix that denotes the scattering amplitude of a β particle from the j-th lead to an α particle in the i-th lead. Furthermore, i,j = 1 or 2, where 1 and 2 denote, respectively, the first and the second normal lead as shown in Figure 1a. denote the electron (e

• approximation. The physical meaning of the scattering matrix is: means the Andreev reflection coefficient TA in the i-th lead, and means the electron transmission coefficient Te from the i-th lead to the j-th lead. To match the experiment in [12], the parameters in the tight-binding model were chosen as

Current-induced forces in mesoscopic systems: A scattering-matrix approach

• Niels Bode,
• Silvia Viola Kusminskiy,
• Reinhold Egger and
• Felix von Oppen

Beilstein J. Nanotechnol. 2012, 3, 144–162, doi:10.3762/bjnano.3.15

• vibrational modes on the electronic dynamics. We employ the scattering-matrix approach to quantum transport in order to develop a unified theory of nanoelectromechanical systems out of equilibrium. For a slow mechanical mode the current can be obtained from the Landauer–Büttiker formula in the strictly

• adiabatic limit. The leading correction to the adiabatic limit reduces to Brouwer’s formula for the current of a quantum pump in the absence of a bias voltage. The principal results of the present paper are the scattering-matrix expressions for the current-induced forces acting on the mechanical degrees of

• mechanical vibrations and cause limit-cycle dynamics. Keywords: current-induced forces; electronic transport theory; nanoelectromechanical systems; scattering matrix; S-matrix; Introduction Scattering theory has proved to be a highly successful method for treating coherent transport in mesoscopic systems