Tuning the supercurrent distribution in parallel ballistic graphene Josephson junctions

We report on a ballistic and fully tunable Josephson-junction system consisting of two parallel ribbons of graphene in contact with superconducting molybdenum-rhenium. By electrostatic gating of the two individual graphene ribbons, we gain control over the real-space distribution of the superconducting current density, which can be continuously tuned between the two ribbons. We extract the respective gate-dependent spatial distributions of the real-space current density by employing Fourier and Hilbert transformations of the magnetic-field-induced modulation of the critical current. This approach is fast and does not rely on a symmetric current profile. It is therefore a universally applicable tool, potentially useful for carefully adjusting Josephson junctions

Ambivalenz der Wiedereingliederung

"Employers and insurances in Switzerland have introduced new instruments to support the return to work process of sick workers. A key instrument in this regard has been the introduction of case managers in companies. But what are the consequences of these measures on the “selves” of the supported employees? The grounded theory study answers this question based on 16 interviews with employees who have successfully returned to work after serious sickness or accident. The results show that employees are reluctant to accept case management support. Establishing a sustainable relationship between case management and supported employees takes time, but eventually is successful due to a moral division of labour (Hughes) within the companies. The disability insurance is viewed as a potential danger to one’s self, because the insurance is associated with labels such as disability, dependency or fraud. In the return to work process, primary and secondary adjustments (Goffman) to organisational expectations play an essential role. Employees must demonstrate a strong will to return to work and they feel compelled to accept all adaptations made by the company in order to keep the job. However, these primary adjustments lead to cognitive dissonance among the affected individuals. Secondary adjustments, such as reduced identification with the job or the employer, allow to reduce these tensions.

Ambivalenz der Wiedereingliederung

"Employers and insurances in Switzerland have introduced new instruments to support the return to work process of sick workers. A key instrument in this regard has been the introduction of case managers in companies. But what are the consequences of these measures on the “selves” of the supported employees? The grounded theory study answers this question based on 16 interviews with employees who have successfully returned to work after serious sickness or accident. The results show that employees are reluctant to accept case management support. Establishing a sustainable relationship between case management and supported employees takes time, but eventually is successful due to a moral division of labour (Hughes) within the companies. The disability insurance is viewed as a potential danger to one’s self, because the insurance is associated with labels such as disability, dependency or fraud. In the return to work process, primary and secondary adjustments (Goffman) to organisational expectations play an essential role. Employees must demonstrate a strong will to return to work and they feel compelled to accept all adaptations made by the company in order to keep the job. However, these primary adjustments lead to cognitive dissonance among the affected individuals. Secondary adjustments, such as reduced identification with the job or the employer, allow to reduce these tensions.

„Arbeiten, solange der Körper mitmacht“

In der Debatte um demografischen Wandel und Fachkräftemangel wurden die mit Einfacharbeit und alternden Belegschaften verbundenen Herausforderungen bislang kaum in den Blick genommen. Hinweise in der Forschungsliteratur zeigen jedoch, dass in diesem bislang vernachlässigten Themenfeld sowohl auf Seiten der Unternehmen als auch auf Seiten der Forschung Handlungsbedarf besteht. Der vorliegende Beitrag legt den aktuellen Stand der Forschung zu Einfacharbeit und alternden Belegschaften dar und diskutiert auf der Grundlage einer qualitativen empirischen Studie unter Personalverantwortlichen in Unternehmen und Expertinnen und Experten in der Schweiz die Belastungen für die Beschäftigten, die betrieblichen Herausforderungen und deren Reaktion darauf. In der Studie hat sich gezeigt, dass die Personalverantwortlichen in Unternehmen insbesondere physische Belastungen als Herausforderungen in Bezug auf Einfacharbeit und alternde Belegschaften identifizieren. Die betrieblichen Maßnahmen, mit denen darauf reagiert wird, sind meist reaktiv und individuell. Systematische Aktivitäten in Bezug auf den Umgang mit altersbedingten Herausforderungen in Einfacharbeit, insbesondere bezüglich Qualifikation und Alter, wurden hingegen kaum identifiziert

„Arbeiten, solange der Körper mitmacht“: Betriebliche Herausforderungen im Zusammenhang mit Einfacharbeit und alternden Belegschaften

In der Debatte um demografischen Wandel und Fachkräftemangel wurden die mit Einfacharbeit und alternden Belegschaften verbundenen Herausforderungen bislang kaum in den Blick genommen. Hinweise in der Forschungsliteratur zeigen jedoch, dass in diesem bislang vernachlässigten Themenfeld sowohl auf Seiten der Unternehmen als auch auf Seiten der Forschung Handlungsbedarf besteht. Der vorliegende Beitrag legt den aktuellen Stand der Forschung zu Einfacharbeit und alternden Belegschaften dar und diskutiert auf der Grundlage einer qualitativen empirischen Studie unter Personalverantwortlichen in Unternehmen und Expertinnen und Experten in der Schweiz die Belastungen für die Beschäftigten, die betrieblichen Herausforderungen und deren Reaktion darauf. In der Studie hat sich gezeigt, dass die Personalverantwortlichen in Unternehmen insbesondere physische Belastungen als Herausforderungen in Bezug auf Einfacharbeit und alternde Belegschaften identifizieren. Die betrieblichen Maßnahmen, mit denen darauf reagiert wird, sind meist reaktiv und individuell. Systematische Aktivitäten in Bezug auf den Umgang mit altersbedingten Herausforderungen in Einfacharbeit, insbesondere bezüglich Qualifikation und Alter, wurden hingegen kaum identifiziert

Supporting data for "Tuning the supercurrent distribution in parallel ballistic graphene Josephson junctions"

<p>Supporting data and analysis scripts for all figures in the article "Tuning the supercurrent distribution in parallel ballistic graphene Josephson junctions".</p> <p>The files are sorted according to the figures/panels in the publication.</p> <p>For the data evaluation Matlab (version R2022b) has been used.</p&gt

Tuning the supercurrent distribution in parallel ballistic graphene Josephson junctions

We report on a ballistic and fully tunable Josephson-junction system consisting of two parallel ribbons of graphene in contact with superconducting molybdenum-rhenium. By electrostatic gating of the two individual graphene ribbons, we gain control over the real-space distribution of the superconducting current density, which can be continuously tuned between the two ribbons. We extract the respective gate-dependent spatial distributions of the real-space current density by employing Fourier and Hilbert transformations of the magnetic-field-induced modulation of the critical current. This approach is fast and does not rely on a symmetric current profile. It is therefore a universally applicable tool, potentially useful for carefully adjusting Josephson junctions