21 research outputs found
Fano interference of the Higgs mode in cuprate high-Tc superconductors
Despite decades of search for the pairing boson in cuprate high-Tc
superconductors, its identity still remains debated to date. For this reason,
spectroscopic signatures of electron-boson interactions in cuprates have always
been a center of attention. For example, the kinks in the quasiparticle
dispersion observed by angle-resolved photoemission spectroscopy (ARPES)
studies have motivated a decade-long investigation of electron-phonon as well
as electron-paramagnon interactions in cuprates. On the other hand, the overlap
between the charge-order correlations and the pseudogap in the cuprate phase
diagram has also generated discussions about the potential link between them.
In the present study, we provide a fresh perspective on these intertwined
interactions using the novel approach of Higgs spectroscopy, i.e. an
investigation of the amplitude oscillations of the superconducting order
parameter driven by a terahertz radiation. Uniquely for cuprates, we observe a
Fano interference of its dynamically driven Higgs mode with another collective
mode, which we reveal to be charge density wave fluctuations from an extensive
doping- and magnetic field-dependent study. This finding is further
corroborated by a mean field model in which we describe the microscopic
mechanism underlying the interaction between the two orders. Our work
demonstrates Higgs spectroscopy as a novel and powerful technique for
investigating intertwined orders and microscopic processes in unconventional
superconductors
Genetic modifiers of radon-induced lung cancer risk: a genome-wide interaction study in former uranium miners
PURPOSE: Radon is a risk factor for lung cancer and uranium miners are more exposed than the general population. A genome-wide interaction analysis was carried out to identify genomic loci, genes or gene sets that modify the susceptibility to lung cancer given occupational exposure to the radioactive gas radon. METHODS: Samples from 28 studies provided by the International Lung Cancer Consortium were pooled with samples of former uranium miners collected by the German Federal Office of Radiation Protection. In total, 15,077 cases and 13,522 controls, all of European ancestries, comprising 463 uranium miners were compared. The DNA of all participants was genotyped with the OncoArray. We fitted single-marker and in multi-marker models and performed an exploratory gene-set analysis to detect cumulative enrichment of significance in sets of genes. RESULTS: We discovered a genome-wide significant interaction of the marker rs12440014 within the gene CHRNB4 (OR = 0.26, 95% CI 0.11-0.60, p = 0.0386 corrected for multiple testing). At least suggestive significant interaction of linkage disequilibrium blocks was observed at the chromosomal regions 18q21.23 (p = 1.2 × 10-6), 5q23.2 (p = 2.5 × 10-6), 1q21.3 (p = 3.2 × 10-6), 10p13 (p = 1.3 × 10-5) and 12p12.1 (p = 7.1 × 10-5). Genes belonging to the Gene Ontology term "DNA dealkylation involved in DNA repair" (GO:0006307; p = 0.0139) or the gene family HGNC:476 "microRNAs" (p = 0.0159) were enriched with LD-blockwise significance. CONCLUSION: The well-established association of the genomic region 15q25 to lung cancer might be influenced by exposure to radon among uranium miners. Furthermore, lung cancer susceptibility is related to the functional capability of DNA damage signaling via ubiquitination processes and repair of radiation-induced double-strand breaks by the single-strand annealing mechanism
Dissertatio Medica De Usu & Abusu Medicinæ
Königsberg, Univ., Med. Diss., 1713Quam ... inter concatenata Praxeos Medicæ negotia concipit & publici Juris fecit Georg. Christoph. Christiani, Hollandiâ-Borussus, Medicinae Doctor, Sacr. Reg. Majest. in Borussia, superioris Borussiae Terrarum Physicus OrdinariusAutopsie nach Exemplar der ULB Sachsen-AnhaltVorlageform des Erscheinungsvermerks: Regiomonti, Typis Reusnerianis. MDCCXIII
Standrede bei der Bahre weiland Herrn Christoph Friedrichs von Flemming, Churfürstl. Sächs. General-Lieutenants und Vice-Präsidentens des Geheimen Kriegsraths-Collegii, Erbherrns auf Buko [et]c. gehalten : Dresden, am 4. Jun. 1789
Trauerrede auf Christoph Friedrich von Flemming, Kurfürstl. Sächs. Generalleutnant[Major von Christiani ... Verfasser dieser Standrede. Vorrede: J. F. Freyherr zu Racknitz
Towards precise defect control in layered oxide structures by using oxide molecular beam epitaxy
In this paper we present the atomic-layer-by-layer oxide molecular beam epitaxy (ALL-oxide MBE) which has been recently installed in the Max-Planck Institute for Solid State Research and we report on its present status, providing some examples that demonstrate its successful application in the synthesis of different layered oxides, with particular reference to superconducting La2CuO4 and insulator-to-metal La2−xSrxNiO4. We briefly review the ALL-oxide MBE technique and its unique capabilities in the deposition of atomically smooth single-crystal thin films of various complex oxides, artificial compounds and heterostructures, introducing our goal of pursuing a deep investigation of such systems with particular emphasis on structural defects, with the aim of tailoring their functional properties by precise defects control
Dissertatio Inauguralis, Quae, Exposita, Librorum Ecclesiae Nostrae, Qui Dicuntur, Symbolicorum, Natura Et Ad Rem Christianam Vera Ratione In Quaestionem Inquirit: Num Hi Libri Hac Nostra Aetate E Re Christiana Sint Tollendi? / Quam Rectore Academiae Magnificentissimo ... Domino Christiano Septimo, Daniae, Norvegiae, Vandalorum Et Gothorum Rege, Supremo Duce Slesvici, Duce Holsatiae ... Consentiente Amplissimo Philosophorum Ordine, Praeside Ac Promotore ... Wilhelmo Ernesto Christiani Phil. D. Aug. Reg. A Consil. Iust. Iur. Nat. Polit. Eloqu. Poeseos Et Histor. P. P. O. Ampl. Ord. H. T. Decano Spectabili Pro Summis In Philosophia Honoribus, Rite Consequendis D. XXV Maii MDCCLXXXVII ... Publice Defendet Auctor Joannes Georgius Schmidt Hamburgensis
DISSERTATIO INAUGURALIS, QUAE, EXPOSITA, LIBRORUM ECCLESIAE NOSTRAE, QUI DICUNTUR, SYMBOLICORUM, NATURA ET AD REM CHRISTIANAM VERA RATIONE IN QUAESTIONEM INQUIRIT: NUM HI LIBRI HAC NOSTRA AETATE E RE CHRISTIANA SINT TOLLENDI? / QUAM RECTORE ACADEMIAE MAGNIFICENTISSIMO ... DOMINO CHRISTIANO SEPTIMO, DANIAE, NORVEGIAE, VANDALORUM ET GOTHORUM REGE, SUPREMO DUCE SLESVICI, DUCE HOLSATIAE ... CONSENTIENTE AMPLISSIMO PHILOSOPHORUM ORDINE, PRAESIDE AC PROMOTORE ... WILHELMO ERNESTO CHRISTIANI PHIL. D. AUG. REG. A CONSIL. IUST. IUR. NAT. POLIT. ELOQU. POESEOS ET HISTOR. P. P. O. AMPL. ORD. H. T. DECANO SPECTABILI PRO SUMMIS IN PHILOSOPHIA HONORIBUS, RITE CONSEQUENDIS D. XXV MAII MDCCLXXXVII ... PUBLICE DEFENDET AUCTOR JOANNES GEORGIUS SCHMIDT HAMBURGENSIS
Dissertatio Inauguralis, Quae, Exposita, Librorum Ecclesiae Nostrae, Qui Dicuntur, Symbolicorum, Natura Et Ad Rem Christianam Vera Ratione In Quaestionem Inquirit: Num Hi Libri Hac Nostra Aetate E Re Christiana Sint Tollendi? / Quam Rectore Academiae Magnificentissimo ... Domino Christiano Septimo, Daniae, Norvegiae, Vandalorum Et Gothorum Rege, Supremo Duce Slesvici, Duce Holsatiae ... Consentiente Amplissimo Philosophorum Ordine, Praeside Ac Promotore ... Wilhelmo Ernesto Christiani Phil. D. Aug. Reg. A Consil. Iust. Iur. Nat. Polit. Eloqu. Poeseos Et Histor. P. P. O. Ampl. Ord. H. T. Decano Spectabili Pro Summis In Philosophia Honoribus, Rite Consequendis D. XXV Maii MDCCLXXXVII ... Publice Defendet Auctor Joannes Georgius Schmidt Hamburgensis (1)
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The Superconducting Dome in Artificial High-<i>T<sub>c</sub></i> Superlattices Tuned at the Fano–Feshbach Resonance by Quantum Design
While the search for new high-temperature superconductors had been driven by the empirical “trials and errors” method for decades, we now report the synthesis of Artificial High-Tc Superlattices (AHTS) designed by quantum mechanics theory at the nanoscale. This discovery paves the way for engineering a new class of high-temperature superconductors, following the predictions of the Bianconi Perali Valletta (BPV) theory recently implemented in 2022 by Mazziotti et al. including Rashba spin-orbit coupling to create nanoscale AHTS composed of quantum wells. The high-Tc superconducting properties within these superlattices are controlled by a conformational parameter of the superlattice geometry, specifically, the ratio L/d which represents the thickness of La2CuO4 layers (L) relative to the superlattice period (d). Using molecular beam epitaxy, we have successfully grown numerous AHTS samples. These samples consist of initial layers of stoichiometric La2CuO4 units with a thickness L, doped by interface space charge, and intercalated with second layers of non-superconducting metallic material, La1.55Sr0.45CuO4 with thickness denoted as W = d − L. This configuration forms a quantum superlattice with periodicity d. The agreement observed between the experimental dependence Tc (the superconducting transition temperature) versus L/d ratio and the predictions of the BPV theory for AHTS in the form of the superconducting dome validates the hypothesis that the superconducting dome arises from the Fano–Feshbach or shape resonance in multigap superconductivity driven by quantum nanoscale confinement
Anleitung zur verfertigung von handelsberichten in siebenzehn von den vorzüglichsten handels-plätzen genommenen beispielen. Darstellung der deutschen buchhalterei. Abhandlung von der wechselreiterei durch beispiele erläutert.
"Zweiter anhang zu Christiani's Unterricht für die zu kaufleuten bestimmten jünglinge."Bibliography: p. 184-188.Mode of access: Internet