42 research outputs found
Combining electron spin resonance spectroscopy with scanning tunneling microscopy at high magnetic fields
Combining Electron Spin Resonance Spectroscopy with Scanning Tunneling Microscopy at High Magnetic Fields
Magnetic media remain a key in information storage and processing. The
continuous increase of storage densities and the desire for quantum memories
and computers pushes the limits of magnetic characterisation techniques.
Ultimately, a tool which is capable of coherently manipulating and detecting
individual quantum spins is needed. The scanning tunnelling microscope (STM) is
the only technique which unites the prerequisites of high spatial and energy
resolution, low temperature and high magnetic fields to achieve this goal.
Limitations in the available frequency range for electron spin resonance STM
(ESR-STM) mean that many instruments operate in the thermal noise regime. We
resolve challenges in signal delivery to extend the operational frequency range
of ESR-STM by more than a factor of two and up to 100GHz, making the Zeeman
energy the dominant energy scale at achievable cryogenic temperatures of a few
hundred millikelvin. We present a general method for augmenting existing
instruments into ESR-STMs to investigate spin dynamics in the high-field limit.
We demonstrate the performance of the instrument by analysing inelastic
tunnelling in a junction driven by a microwave signal and provide proof of
principle measurements for ESR-STM.Comment: 8 pages, 7 figure
Molecular ecological chemistry in Arctic fjords at different stages of deglaciation (2016) - Cruise No. MSM56 – July 2 – July 25, 2016 – Longyearbyen (Norway) – Reykjavík (Iceland)
The 12p13.33/RAD52 locus and genetic susceptibility to squamous cell cancers of upper aerodigestive tract
Acknowledgments: The authors thank all of the participants who took part in this research and the funders and support and technical staff who made this study possible. We also acknowledge and thank The Cancer Genome Atlas initiative whose data contributed heavily to this study. Funding: Funding for study coordination, genotyping of replication studies and statistical analysis was provided by the US National Institutes of Health (R01 CA092039 05/05S1) and the National Institute of Dental and Craniofacial Research (1R03DE020116). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.Peer reviewedPublisher PD
Der Finanzplatz Zürich 2008
Das Institut für schweizerisches Bankwesen der Universität Zürich hat im Auftrag des Verbandes Zürcherischer Kreditinstitute eine Studie über den Finanzplatz Zürich und dessen Bedeutung für die Kantone Zürich, Zug und Schwyz erstellt.
Die Studie zeigt, dass sich der Finanzplatz Zürich in den letzen Jahren weit über die Zürcher Stadtgrenze hinaus ausgebreitet hat und heute nicht nur Banken, sondern auch viele spezialisierte Dienstleister umfasst