Transport properties of Andreev polarons in superconductor-semiconductor-superconductor junction with superlattice structure

Transport properties of a superconductor-semiconductor-superconductor (S-Sm-S) junction with superlattice structure are investigated. Differential resistance as a function of voltage shows oscillatory behavior under the irradiation of radio-frequency (RF) waves with the specific frequency of 1.77 GHz regardless of the superconducting materials and the junction lengths. Experimental data are quantitatively explained in terms of the coupling of superconducting quasiparticles with long-wavelength acoustic phonons indirectly excited by the RF waves. We propose that the strong coupling causes the formation of novel composite particles, Andreev polarons.Comment: 4 pages, 4 figure

Effects of low-temperature capping on the optical properties of GaAs/AlGaAs quantum wells

We study the effects of low-temperature capping (200-450°C) on the optical properties of GaAs/AlGaAs quantum wells. Photoluminescence measurements clearly show the formation of abundant nonradiative recombination centers in an AlGaAs capping layer grown at 200°C, while there is a slight degradation of the optical quality in AlGaAs capping layers grown at temperatures above 350°C compared to that of a high-temperature capping layer. In addition, the optical quality can be restored by post-growth annealing without any structural change, except for the 200°C-capped sample

ANALISIS PUTUSAN HAKIM NOMOR 41/PID.SUS/2018/PN BATU LICIN, TENTANG PERKARA SEDIAAN FARMASI OBAT DAFTAR G JENIS CARNOPEN YANG TIDAK MEMILIKI IJIN DITINJAU DARI ASPEK KEADILAN

The main task of the judge is to accept, examine and try and settle every case submitted to him. It seems very simple for the judge's duties as referred to in Article 2 paragraph 1 of Law Number 48 of 2009, but in reality it is not easy and that simple. The formulation of the problem in this study is 1) What is the Basic Consideration of Judge Judge Number 41 / Pid.Sus / 2018 / PN Batu Licin about the case of circulating pharmaceutical preparations for the list of G types of carnopen that do not have permission? 2) How is the Decision Number 41 / Pid.Sus / 2018 / PN Batu Licin concerning the case of circulating pharmaceutical preparations of the list of drugs G type carnopen that do not have permission in terms of aspects of justice? The approach used in this writing is normative juridical. The data used in this study are primary and secondary data. Analysis of legal materials used in this study is descriptive quality. The results of the analysis show that the basis for the Judgment of Judge Number 41 / Pid.Sus / 2018 / PN Batu Licin about the case of circulating pharmaceutical drug preparations list G types of carnopen which do not have permission, namely subjectively in this case, which is concerning a priori behavioral attitudes, behavioral attitudes emotional, arrogant and moral attitude. Objectively, that is regarding social, cultural and economic backgrounds, professionally. Decision Number 41 / Pid.Sus / 2018 / PN Batu Licin concerning cases circulating pharmaceutical preparations of the list of G types of carnopen which do not have permission in terms of justice, namely 1) declaring the aforementioned Defendant Candra Bin Rahmadi legally and convincingly guilty committing a criminal offense "intentionally circulating Pharmaceutical preparations that do not have marketing authorization" as in the primary indictment 2) Imposing a sentence to the Defendant because of that with imprisonment for 1 (one) year and 2 (two) months and a fine of Rp.2,000,000 00 (two million rupiahs) with the provision that if the fine is not paid is replaced by a confinement for 1 (one) month; and 3) Determine the period of arrest and detention that has been carried out by the Defendant entirely deducted from the sentence imposed

Finishing the euchromatic sequence of the human genome

The sequence of the human genome encodes the genetic instructions for human physiology, as well as rich information about human evolution. In 2001, the International Human Genome Sequencing Consortium reported a draft sequence of the euchromatic portion of the human genome. Since then, the international collaboration has worked to convert this draft into a genome sequence with high accuracy and nearly complete coverage. Here, we report the result of this finishing process. The current genome sequence (Build 35) contains 2.85 billion nucleotides interrupted by only 341 gaps. It covers ∼99% of the euchromatic genome and is accurate to an error rate of ∼1 event per 100,000 bases. Many of the remaining euchromatic gaps are associated with segmental duplications and will require focused work with new methods. The near-complete sequence, the first for a vertebrate, greatly improves the precision of biological analyses of the human genome including studies of gene number, birth and death. Notably, the human enome seems to encode only 20,000-25,000 protein-coding genes. The genome sequence reported here should serve as a firm foundation for biomedical research in the decades ahead

Superconductor-based Light Emitting Diode: Demonstration of Role of Cooper Pairs in Radiative Recombination Processes

A light emitting diode with superconducting Nb electrodes was fabricated to investigate the contribution of cooper pairs to radiative recombination in a semiconductor. Electroluminescence observed from the active layer in which electron cooper pairs and normal holes are injected was drastically enhanced at the temperature lower than the superconducting transition temperature of the Nb electrodes. This is the first experimental evidence that cooper pairs enhance radiative recombinations by the superradiance effect

Origin of the blueshift of photoluminescence in a type-II heterostructure

Blueshifts of luminescence observed in type-II heterostructures are quantitatively examined in terms of a self-consistent approach including excitonic effects. This analysis shows that the main contribution to the blueshift originates from the well region rather than the variation of triangular potentials formed in the barrier region. The power law for the blueshift, ΔEPL ∝ Plaserm, from m = 1/2 for lower excitation Plaser to m = 1/4 for higher excitation, is obtained from the calculated results combined with a rate equation analysis, which also covers the previously believed m = 1/3 power law within a limited excitation range. The present power law is consistent with the blueshift observed in a GaAsSb/GaAs quantum well

Superconductor-Based Quantum-Dot Light-Emitting Diodes: Role of Cooper Pairs in Generating Entangled Photon Pairs

The realization of solid-state photon sources that are capable of on-demand generation of an entangled single-photon pair at a time is highly desired for quantum information processing and communication. A new method of generating an entangled single-photon pair at a time is proposed employing Cooper-pair-related radiative recombination in a quantum dot (QD). Cooper pairs are bosons and the control of their number states is difficult. Pauli's exclusion principle on quasiparticles in a discrete state of a QD regulates the number state of the generated photon pairs in this scheme. The fundamental heterostructures for constructing superconductor-based quantum-dot light-emitting diodes (SQ-LEDs) and the fundamental operation conditions of SQ-LED will be discussed. The experimental studies on Cooper-pair injection into the related semiconductor structures will be also discussed

Impact of thermal treatment on the growth of semipolar AlN on m-plane sapphire

The interest in semipolar orientations has been increasing because the reduced piezoelectric field can improve the performance of nitride-based optoelectronic devices. However, the crystalline quality of semipolar AlN on m-plane sapphire is still not good enough to realize light emitters with sufficiently high efficiency. We performed high-temperature annealing on AlN on m-plane sapphire to improve the crystalline quality. For (10-1-3) and (11-22) AlN on m-plane sapphire, the crystalline quality improved as the annealing temperature was increased up to 1700 °C, whereas beyond 1750 °C the AlN layer started to deteriorate and desorb. The crystalline quality was further improved by additional growth of AlN. In addition, X-ray rocking curve measurements and transmission electron microscopy confirmed that the density of stacking faults was reduced after the additional growth of AlN