Geologic interpretation of Skylab photographs

There are no author-identified significant results in this report

Scanning tunneling microscopy investigation of 2H-MoS_2: A layered semiconducting transition‐metal dichalcogenide

Scanning tunneling microscopy (STM) has been enormously successful in solving several important problems in the geometric and electronic structure of homogeneous metallic and semiconducting surfaces. A central question which remains to be answered with respect to the study of compound surfaces, however, is the extent to which the chemical identity of constituent atoms may be established. Recently, progress in this area was made by Feenstra et al. who succeeded in selectively imaging either Ga or As atoms on the GaAs (110) surface. So far this is the only case where such selectivity has been achieved. In an effort to add to our understanding of compound surface imaging we have undertaken a vacuum STM study of 2H-MoS_2, a material which has two structurally and electronically different atomic species at its surface

Cavity-induced temperature control of a two-level system

We consider a two-level atom interacting with a single mode of the electromagnetic field in a cavity within the Jaynes-Cummings model. Initially, the atom is thermal while the cavity is in a coherent state. The atom interacts with the cavity field for a fixed time. After removing the atom from the cavity and applying a laser pulse the atom will be in a thermal state again. Depending on the interaction time with the cavity field the final temperature can be varied over a large range. We discuss how this method can be used to cool the internal degrees of freedom of atoms and create heat baths suitable for studying thermodynamics at the nanoscale

The behavior of CO phases on Rh(110) under static pressures

The behavior of CO phases on Rh(110) has been determined under static CO pressures. Three ordered phases are observed as a function of decreasing temperature under equilibrium conditions. Starting from a disordered phase, these are in sequence a c(2×2), a ‘‘(4×2)’’, and a (2×1)p2mg. In addition, a ‘‘(5×2)’’ phase forms irreversibly just prior to the (2×1)p2mg on cooling in low CO pressures (less than 10−5 Pa). Formation of the (2×1)p2mg phase is found to be activated, which may indicate that surface reconstruction is involved

A Mentoring Network for Novice and Experienced Music Teachers: Concept, Design, Outcomes, and Recommendations

Two university music education faculty aimed to expand mentoring beyond a one-to-one relationship to a more collaborative approach by creating a year-long online mentoring network of experienced and novice music educators. The purpose of this article is to describe the network’s structure and content, and discuss outcomes and recommendations based on participating teachers’ perspectives and experiences. Network materials promoted discussion and reflection on various music teaching and learning topics; the sharing of strategies, ideas, and resources; and mutual support and encouragement. Participants discussed topics with direct application for their classes and shared rewarding teaching moments, student successes, positive assessment outcomes, and struggles with fatigue and lack of student engagement. They stated the network provided a supportive space that facilitated connection and reflection, empathetic feedback, and teaching strategy and resource suggestions. Recommendations included more active opportunities to engage with and build relationships with each other, synchronous activities via videoconferencing platforms, and more facilitator participation

Mesoscopic Rydberg Gate based on Electromagnetically Induced Transparency

We demonstrate theoretically a parallelized C-NOT gate which allows to entangle a mesoscopic ensemble of atoms with a single control atom in a single step, with high fidelity and on a microsecond timescale. Our scheme relies on the strong and long-ranged interaction between Rydberg atoms triggering Electromagnetically Induced Transparency (EIT). By this we can robustly implement a conditional transfer of all ensemble atoms among two logical states, depending on the state of the control atom. We outline a many body interferometer which allows a comparison of two many-body quantum states by performing a measurement of the control atom.Comment: published versio