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Related publications (47)

Fragmentation mechanism of UV-excited peptides in the gas phase

Thomas Rizzo, Michael Zachary Kamrath, Aleksandra Zabuga

We present evidence that following near-UV excitation, protonated tyrosine- or phenylalanine–containing peptides undergo intersystem crossing to produce a triplet species. This pathway competes with direct dissociation from the excited electronic state and ...

American Institute of Physics2014

Electronic elements based on quasitwo-dimensional electron/hole gas at charged domain walls in ferroelectrics

Alexander Tagantsev, Tomas Sluka

The present invention relates to a device including a ferroic material having a ferroelectric order parameter and including at least two domains, as well as a first and second electrode in electrical contact with the ferroic material. The device is configu ...

2014

Assigning the EPR Fine Structure Parameters of the Mn(II) Centers in Bacillus subtilis Oxalate Decarboxylase by Site-Directed Mutagenesis and DFT/MM Calculations

Ursula Röthlisberger, Pablo Campomanes Ramos

Oxalate decarboxylase (OxDC) catalyzes the Mn-dependent conversion of the oxalate monoanion into CO2 and formate. EPR-based strategies for investigating the catalytic mechanism of decarboxylation are complicated by the difficulty of assigning the signals a ...

2014

Is light-induced degradation of a-Si:H/c-Si interfaces reversible?

Christophe Ballif, Stefaan De Wolf, Jakub Holovsky, El Mahdi El Mhamdi, Bénédicte Demaurex

Thin hydrogenated amorphous silicon (a-Si:H) films deposited on crystalline silicon (c-Si) surfaces are sensitive probes for the bulk electronic properties of a-Si:H. Here, we use such samples during repeated low-temperature annealing and visible-light soa ...

Amer Inst Physics2014

Magnetism and Atomic Scale Structure of Bimetallic Nanostructures at Surfaces

Sergio Vlaic

his thesis reports on the magnetic properties of bi- and tri-metallic nanostructures at surfaces. The main goal is to build the smallest nanostructure ferromagnetic at room temperature and the assembly of those structures in high density arrays. To this pu ...

EPFL2013

Structural phase transitions and electronic phenomena at 180-degree domain walls in rhombohedral BaTiO3

Nava Setter, Alexander Tagantsev, Petr Yudin

The structure and electronic phenomena at the 180-degree domain wall in the rhombohedral phase of BaTiO3 are described using Landau-Ginzburg-Devonshire theory. Dependent on the wall orientation, two types of domain wall behaviors are identified. The low-en ...

American Physical Society2013

Engineering quantum spin Hall effect in graphene nanoribbons via edge functionalization

Oleg Yazyev, Gabriel Albert Autes

Kane and Mele predicted that in the presence of spin-orbit interaction graphene realizes the quantum spin Hall state [Phys. Rev. Lett. 95, 226801 (2005)]. However, exceptionally weak intrinsic spin-orbit splitting in graphene (approximate to 10(-5) eV) inh ...

Amer Physical Soc2013

Highly cytotoxic trithiophenolatodiruthenium complexes of the type [(eta(6)-p-MeC6H4Pr (i) )(2)Ru-2(SC6H4-p-X)(3)](+): synthesis, molecular structure, electrochemistry, cytotoxicity, and glutathione oxidation potential

Paul Joseph Dyson, Olivier Pierre Zava, Mathurin Baquié

A series of cationic dinuclear p-cymene ruthenium trithiophenolato complexes of the type (eta(6)-p-MeC6H4Pr (i) )(2)Ru-2(SC6H4-p-X)(3) (1 X is H, 2 X is Me, 3 X is Ph, 4 X is Br, 5 X is OH, 6 X is NO2, 7 X is OMe, 8 X is CF3, 9 X is F, 10 X is Pr (i) ...

2012

Vanishing of the metal-insulator Peierls transition in pressurized BaVS3

Helmuth Berger

BaVS3 presents a metal-to-insulator (MI) transition at ambient pressure due to the stabilization of a 2k(F) commensurate charge density wave (CDW) Peierls ground state built on the dz(2) V orbitals. The MI transition vanishes under pressure at a quantum cr ...

Amer Physical Soc2012

Ultrafast (but Many-Body) Relaxation in a Low-Density Electron Glass

Verner Thorsmolle

We present a study of the relaxation dynamics of the photoexcited conductivity of the impurity states in the low-density electronic glass, phosphorous-doped silicon Si: P. Using subband gap optical pump-terahertz probe spectroscopy we find strongly tempera ...

American Physical Society2010

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