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Showing 1 to 12 of 146 entries
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Energy Dependent Stereodynamics of the Ne(^{3}P_{2})+Ar Reaction.

Physical review letters

Gordon SDS, Zou J, Tanteri S, Jankunas J, Osterwalder A.
PMID: 28949716
Phys Rev Lett. 2017 Aug 04;119(5):053001. doi: 10.1103/PhysRevLett.119.053001. Epub 2017 Aug 02.

The stereodynamics of the Ne(^{3}P_{2})+Ar Penning and associative ionization reactions have been studied using a crossed molecular beam apparatus. The experiment uses a curved magnetic hexapole to polarize the Ne(^{3}P_{2}), which is then oriented with a shaped magnetic field...

Optical Control of Young's Type Double-slit Interferometer for Laser-induced Electron Emission from a Nano-tip.

Scientific reports

Yanagisawa H, Ciappina M, Hafner C, Schötz J, Osterwalder J, Kling MF.
PMID: 28978914
Sci Rep. 2017 Oct 04;7(1):12661. doi: 10.1038/s41598-017-12832-3.

Interference experiments with electrons in a vacuum can illuminate both the quantum and the nanoscale nature of the underlying physics. An interference experiment requires two coherent waves, which can be generated by splitting a single coherent wave using a...

Atomically dispersed hybrid nickel-iridium sites for photoelectrocatalysis.

Nature communications

Cui C, Heggen M, Zabka WD, Cui W, Osterwalder J, Probst B, Alberto R.
PMID: 29116238
Nat Commun. 2017 Nov 07;8(1):1341. doi: 10.1038/s41467-017-01545-w.

Atomically dispersed supported catalysts can maximize atom efficiency and minimize cost. In spite of much progress in gas-phase catalysis, applying such catalysts in the field of renewable energy coupled with electrochemistry remains a challenge due to their limited durability...

Cold and controlled molecular beams: production and applications.

Annual review of physical chemistry

Jankunas J, Osterwalder A.
PMID: 25532950
Annu Rev Phys Chem. 2015 Apr;66:241-62. doi: 10.1146/annurev-physchem-040214-121307. Epub 2014 Dec 17.

The field of cold molecules has become an important source of new insight in fundamental chemistry and molecular physics. High-resolution spectroscopy benefits from translationally and internally cold molecules by increased interaction times and reduced spectral congestion. Completely new effects...

Light-Matter Interaction at Surfaces in the Spatiotemporal Limit of Macroscopic Models.

Physical review letters

Lucchini M, Castiglioni L, Kasmi L, Kliuiev P, Ludwig A, Greif M, Osterwalder J, Hengsberger M, Gallmann L, Keller U.
PMID: 26451581
Phys Rev Lett. 2015 Sep 25;115(13):137401. doi: 10.1103/PhysRevLett.115.137401. Epub 2015 Sep 22.

What is the spatiotemporal limit of a macroscopic model that describes the optoelectronic interaction at the interface between different media? This fundamental question has become relevant for time-dependent photoemission from solid surfaces using probes that resolve attosecond electron dynamics...

Preparation of state purified beams of He, Ne, C, N, and O atoms.

The Journal of chemical physics

Jankunas J, Reisyan KS, Osterwalder A.
PMID: 25770544
J Chem Phys. 2015 Mar 14;142(10):104311. doi: 10.1063/1.4914332.

The production and guiding of ground state and metastable C, N, and O atoms in a two-meter-long, bent magnetic guide are described. Pure beams of metastable He((3)S1) and Ne((3)P2), and of ground state N((4)S3/2) and O((3)P2) are obtained using...

Electron coherence in a melting lead monolayer.

Science (New York, N.Y.)

Baumberger F, Auwärter W, Greber T, Osterwalder J.
PMID: 15564313
Science. 2004 Dec 24;306(5705):2221-4. doi: 10.1126/science.1103984. Epub 2004 Nov 25.

We used angle-resolved photoemission spectroscopy to measure the electronic dispersion and single-particle spectral function in a liquid metal. A lead monolayer supported on a copper (111) surface was investigated as the temperature was raised through the melting transition of...

Self-assembly of a hexagonal boron nitride nanomesh on Ru(0001).

Langmuir : the ACS journal of surfaces and colloids

Goriachko A, He Y, Knapp M, Over H, Corso M, Brugger T, Berner S, Osterwalder J, Greber T.
PMID: 17286422
Langmuir. 2007 Mar 13;23(6):2928-31. doi: 10.1021/la062990t. Epub 2007 Feb 08.

Hexagonal boron nitride (h-BN) nanostructures were grown on Ru(0001), and are very similar to those previously reported on Rh(111). They show a highly regular 12 x 12 superstructure, comprising 2 nm wide apertures with a depth of about 0.1...

Experimental and theoretical study of the infrared spectra of BrHI- and BrDI-.

The Journal of chemical physics

Nee MJ, Osterwalder A, Neumark DM, Kaposta C, Cibrián Uhalte C, Xie T, Kaledin A, Bowman JM, Carter S, Asmis KR.
PMID: 15473794
J Chem Phys. 2004 Oct 15;121(15):7259-68. doi: 10.1063/1.1794671.

Gas phase vibrational spectra of BrHI- and BrDI- have been measured from 6 to 17 microm (590-1666 cm(-1)) using tunable infrared radiation from the free electron laser for infrared experiments in order to characterize the strong hydrogen bond in...

Rashba-type spin-orbit splitting of quantum well states in ultrathin Pb films.

Physical review letters

Dil JH, Meier F, Lobo-Checa J, Patthey L, Bihlmayer G, Osterwalder J.
PMID: 19113782
Phys Rev Lett. 2008 Dec 31;101(26):266802. doi: 10.1103/PhysRevLett.101.266802.

A Rashba-type spin-orbit splitting is found for quantum well states formed in ultrathin Pb films on Si (111). The resulting momentum splitting is comparable to what is found for semiconductor heterostructures. The splitting shows no coverage dependency and the...

Robust spin polarization and spin textures on stepped Au(111) surfaces.

Physical review letters

Lobo-Checa J, Meier F, Dil JH, Okuda T, Corso M, Petrov VN, Hengsberger M, Patthey L, Osterwalder J.
PMID: 20482209
Phys Rev Lett. 2010 May 07;104(18):187602. doi: 10.1103/PhysRevLett.104.187602. Epub 2010 May 07.

The influence of structural defects, in the form of step lattices, on the spin polarization of the spin-orbit split Shockley surface state of Au(111) has been investigated. Spin- and angle-resolved photoemission data from three vicinal surfaces with different step...

Observation of unconventional quantum spin textures in topological insulators.

Science (New York, N.Y.)

Hsieh D, Xia Y, Wray L, Qian D, Pal A, Dil JH, Osterwalder J, Meier F, Bihlmayer G, Kane CL, Hor YS, Cava RJ, Hasan MZ.
PMID: 19213915
Science. 2009 Feb 13;323(5916):919-22. doi: 10.1126/science.1167733.

A topologically ordered material is characterized by a rare quantum organization of electrons that evades the conventional spontaneously broken symmetry-based classification of condensed matter. Exotic spin-transport phenomena, such as the dissipationless quantum spin Hall effect, have been speculated to...

Showing 1 to 12 of 146 entries