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Gate-tunable pairing channels in superconducting non-centrosymmetric oxides nanowires

Singh, Gyanendra (author), Guarcello, Claudio (author), Lesne, E.L. (author), Winkler, Dag (author), Claeson, Tord (author), Bauch, Thilo (author), Lombardi, Floriana (author), Caviglia, A. (author), Citro, Roberta (author)

Two-dimensional SrTiO₃-based interfaces stand out among non-centrosymmetric superconductors due to their intricate interplay of gate-tunable Rashba spin-orbit coupling and multi-orbital electronic occupations, whose combination theoretically prefigures various forms of non-standard superconductivity. By employing superconducting...

journal article 2022

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Identifying psychiatric manifestations in schizophrenia and depression from audio-visual behavioural indicators through a machine-learning approach

Xu, Shihao (author), Yang, Zixu (author), Chakraborty, Debsubhra (author), Chua, Yi Han Victoria (author), Tolomeo, Serenella (author), Winkler, Stefan (author), Birnbaum, Michel (author), Tan, Bhing Leet (author), Lee, Jimmy (author), Dauwels, J.H.G. (author)

Schizophrenia (SCZ) and depression (MDD) are two chronic mental disorders that seriously affect the quality of life of millions of people worldwide. We aim to develop machine-learning methods with objective linguistic, speech, facial, and motor behavioral cues to reliably predict the severity of psychopathology or cognitive function, and...

journal article 2022

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Graph machine learning for design of high-octane fuels

Rittig, J. (author), Ritzert, Martin (author), Schweidtmann, A.M. (author), Winkler, Stefanie (author), Weber, J.M. (author), Morsch, Philipp (author), Heufer, Karl Alexander (author), Grohe, Martin (author), Mitsos, Alexander (author), Dahmen, Manuel (author)

Fuels with high-knock resistance enable modern spark-ignition engines to achieve high efficiency and thus low CO₂ emissions. Identification of molecules with desired autoignition properties indicated by a high research octane number and a high octane sensitivity is therefore of great practical relevance and can be supported by...

journal article 2022

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Structure of the Reductase Domain of a Fungal Carboxylic Acid Reductase and Its Substrate Scope in Thioester and Aldehyde Reduction

Daniel, Bastian (author), Hashem, Chiam (author), Leithold, Marlene (author), Sagmeister, Theo (author), Tripp, Adrian (author), Stolterfoht-Stock, Holly (author), Messenlehner, Julia (author), Winkler, Christoph K. (author), Younes, S.H.H. (author)

The synthesis of aldehydes from carboxylic acids has long been a challenge in chemistry. In contrast to the harsh chemically driven reduction, enzymes such as carboxylic acid reductases (CARs) are considered appealing biocatalysts for aldehyde production. Although structures of single- and didomains of microbial CARs have been reported, to...

journal article 2022

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Full parity phase diagram of a proximitized nanowire island

Shen, J. (author), Winkler, G. W. (author), Borsoi, F. (author), Heedt, S. (author), Levajac, V. (author), Wang, J. (author), van Driel, D. (author), Bouman, D. (author), Kouwenhoven, Leo P. (author), van Heck, B. (author)

We measure the charge periodicity of Coulomb blockade conductance oscillations of a hybrid InSb-Al island as a function of gate voltage and parallel magnetic field. The periodicity changes from to at a gate-dependent value of the magnetic field, , decreasing from a high to a low limit upon increasing the gate voltage. In the gate voltage...

journal article 2021

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Nanopatterning of weak links in superconducting oxide interfaces

Singh, Gyanendra (author), Lesne, E.L. (author), Winkler, Dag (author), Claeson, Tord (author), Bauch, Thilo (author), Lombardi, Floriana (author), Caviglia, A. (author), Kalaboukhov, Alexei (author)

The interface between two wide band-gap insulators, LaAlO₃ and SrTiO₃ (LAO/STO), hosts a quasi-two-dimensional electron gas (q2DEG), two-dimensional superconductivity, ferromagnetism, and giant Rashba spin-orbit coupling. The co-existence of two-dimensional superconductivity with gate-tunable spin-orbit coupling and...

journal article 2021

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Andreev Modes from Phase Winding in a Full-Shell Nanowire-Based Transmon

Kringhøj, A. (author), Winkler, G. W. (author), Larsen, T. W. (author), Sabonis, D. (author), Erlandsson, O. (author), Krogstrup, P. (author), van Heck, B. (author), Petersson, K. D. (author), Marcus, C. M. (author)

We investigate transmon qubits made from semiconductor nanowires with a fully surrounding superconducting shell. In the regime of reentrant superconductivity associated with the destructive Little-Parks effect, numerous coherent transitions are observed in the first reentrant lobe, where the shell carries 2π winding of superconducting phase,...

journal article 2021

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Unified numerical approach to topological semiconductor-superconductor heterostructures

Winkler, Georg W. (author), Antipov, Andrey E. (author), van Heck, B. (author), Soluyanov, Alexey A. (author), Glazman, Leonid I. (author), Wimmer, M.T. (author), Lutchyn, Roman M. (author)

We develop a unified numerical approach for modeling semiconductor-superconductor heterostructures. All the key physical ingredients of these systems - orbital effect of magnetic field, superconducting proximity effect, and electrostatic environment - are taken into account on equal footing in a realistic device geometry. As a model system,...

journal article 2019

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Pipe failure modelling for water distribution networks using boosted decision trees

Winkler, Daniel (author), Haltmeier, Markus (author), Kleidorfer, Manfred (author), Rauch, Wolfgang (author), Tscheikner-Gratl, F. (author)

Pipe failure modelling is an important tool for strategic rehabilitation planning of urban water distribution infrastructure. Rehabilitation predictions are mostly based on existing network data and historical failure records, both of varying quality. This paper presents a framework for the extraction and processing of such data to use it for...

journal article 2018

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Effects of Gate-Induced Electric Fields on Semiconductor Majorana Nanowires

Antipov, Andrey E. (author), Bargerbos, A. (author), Winkler, Georg W. (author), Bauer, Bela (author), Rossi, Enrico (author), Lutchyn, Roman M. (author)

We study the effect of gate-induced electric fields on the properties of semiconductor-superconductor hybrid nanowires which represent a promising platform for realizing topological superconductivity and Majorana zero modes. Using a self-consistent Schrödinger-Poisson approach that describes the semiconductor and the superconductor on equal...

journal article 2018

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Electric field tunable superconductor-semiconductor coupling in Majorana nanowires

de Moor, M.W.A. (author), Bommer, J.D.S. (author), Xu, D. (author), Winkler, Georg W. (author), Antipov, Andrey E. (author), Bargerbos, A. (author), Wang, Guanzhong (author), van Loo, N. (author), op het Veld, R.L.M. (author), Gazibegovic, S. (author), Car, D. (author), Bakkers, E.P.A.M. (author), Kouwenhoven, Leo P. (author), Zhang, H. (author)

We study the effect of external electric fields on superconductor-semiconductor coupling by measuring the electron transport in InSb semiconductor nanowires coupled to an epitaxially grown Al superconductor. We find that the gate voltage induced electric fields can greatly modify the coupling strength, which has consequences for the proximity...

journal article 2018

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Orbital Contributions to the Electron g Factor in Semiconductor Nanowires

Winkler, Georg W. (author), Varjas, D. (author), Skolasinski, R.J. (author), Soluyanov, Alexey A. (author), Troyer, Matthias (author), Wimmer, M.T. (author)

Recent experiments on Majorana fermions in semiconductor nanowires [S. M. Albrecht, A. P. Higginbotham, M. Madsen, F. Kuemmeth, T. S. Jespersen, J. Nygård, P. Krogstrup, and C. M. Marcus, Nature (London) 531, 206 (2016)NATUAS0028-083610.1038/nature17162] revealed a surprisingly large electronic Landé g factor, several times larger than the...

journal article 2017

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Quantifying the climate impact of emissions from land-based transport in Germany

Hendricks, J. (author), Righi, M. (author), Dahlmann, K. (author), Gottschaldt, K.-D. (author), Grewe, V. (author), Ponater, M. (author), Sausen, R. (author), Heinrichs, D. (author), Winkler, C. (author), Wolfermann, A. (author), Kampffmeyer, T. (author), Friedrich, R (author), Klötzke, M. (author), Kugler, U. (author)

Although climate change is a global problem, specific mitigation measures are frequently applied on regional or national scales only. This is the case in particular for measures to reduce the emissions of land-based transport, which is largely characterized by regional or national systems with independent infrastructure, organization, and...

journal article 2017

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Unravelling the reasons for disproportion in the ratio of AOB and NOB in aerobic granular sludge

Winkler, M.K.H. (author), Bassin, J.P. (author), Kleerebezem, R. (author), Sorokin, D.Y. (author), Van Loosdrecht, M.C.M. (author)

In this study, we analysed the nitrifying microbial community (ammonium-oxidizing bacteria (AOB) and nitrite-oxidizing bacteria (NOB)) within three different aerobic granular sludge treatment systems as well as within one flocculent sludge system. Granular samples were taken from one pilot plant run on municipal wastewater as well as from two...

journal article 2012

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Subsolidus phase relations in the CaCO3–MgCO3 system predicted from the excess enthalpies of supercell structures with single and double defects

Vinograd, V.L. (author), Sluiter, M.H.F. (author), Winkler, B. (author)

The thermodynamic mixing properties of a binary (AxB1?x)R solid solution are evaluated from the enthalpies of supercell structures Am?2B2Rm and Bm?2A2Rm, where m is the number of the exchangeable sites in the supercell. The excess enthalpies of these structures are converted into concentration-dependent pairwise effective cluster interactions Jn...

journal article 2009

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Malic Acid Production by Saccharomyces cerevisiae: Engineering of Pyruvate Carboxylation, Oxaloacetate Reduction, and Malate Export

Zelle, R.M. (author), De Hulster, E. (author), Van Winden, W.A. (author), De Waard, P. (author), Dijkema, C. (author), Winkler, A.A. (author), Geertman, J.M. (author), Van Dijken, J.P. (author), Pronk, J.T. (author), Van Maris, A.J.A. (author)

Malic acid is a potential biomass-derivable "building block" for chemical synthesis. Since wild-type Saccharomyces cerevisiae strains produce only low levels of malate, metabolic engineering is required to achieve efficient malate production with this yeast. A promising pathway for malate production from glucose proceeds via carboxylation of...

journal article 2008

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Engineering of Saccharomyces cerevisiae for Efficient Anaerobic Alcoholic Fermentation of L-Arabinose

Wisselink, H.W. (author), Toirkens, M.J. (author), Del Rosario Franco Berriel, M. (author), Winkler, A.A. (author), Van Dijken, J.P. (author), Pronk, J.T. (author), Van Maris, A.J.A. (author)

For cost-effective and efficient ethanol production from lignocellulosic fractions of plant biomass, the conversion of not only major constituents, such as glucose and xylose, but also less predominant sugars, such as L-arabinose, is required. Wild-type strains of Saccharomyces cerevisiae, the organism used in industrial ethanol production,...

journal article 2007

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Development of Efficient Xylose Fermentation in Saccharomyces cerevisiae: Xylose Isomerase as a Key Component

Van Maris, A.J.A. (author), Winkler, A.A. (author), Kuyper, M. (author), De Laat, W.T. (author), Van Dijken, J.P. (author), Pronk, J.T. (author)

Metabolic engineering of Saccharomyces cerevisiae for ethanol production from d-xylose, an abundant sugar in plant biomass hydrolysates, has been pursued vigorously for the past 15 years. Whereas wild-type S. cerevisiae cannot ferment d-xylose, the ketoisomer d-xylulose can be metabolised slowly. Conversion of d-xylose into d-xylulose is...

journal article 2007

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Using a quantum well heterostructure to study the longitudinal and transverse electric field components of a strongly focused laser beam

Kihara Rurimo, G. (author), Schardt, M. (author), Quabis, S. (author), Malzer, S. (author), Dotzler, C. (author), Winkler, A. (author), Leuchs, G. (author), Döhler, G.H. (author), Driscoll, D. (author), Hanson, M. (author), Gossard, A.C. (author), Pereira, S.F. (author)

We report a method to measure the electric energy density of longitudinal and transverse electric field components of strongly focused polarized laser beams. We used a quantum well photodetector and exploited the polarization dependent optical transitions of light holes and heavy holes to probe the electric field distribution in the focal region...

journal article 2006

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Homofermentative Lactate Production Cannot Sustain Anaerobic Growth of Engineered Saccharomyces cerevisiae: Possible Consequence of Energy-Dependent Lactate Export

van Maris, A.J. (author), Winkler, A.A. (author), Porro, D. (author), van Dijken, J.P. (author), Pronk, J.T. (author)

journal article 2004