2.5k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- ETH ZurichCH630 papers
- Paul Scherrer InstituteCH136 papers
- École Polytechnique Fédérale de LausanneCH61 papers
- University of ZurichCH45 papers
- University of RegensburgDE44 papers
- Institute of PhysicsPL39 papers
- Centre National de la Recherche ScientifiqueFR37 papers
- Swiss Light Source37 papers
- Polish Academy of SciencesPL36 papers
- P.L. Kapitza Institute for Physical ProblemsRU26 papers
- National Institute for Materials ScienceJP25 papers
- University of GenevaCH23 papers
54 papers · 1 filter
Dynamics of a localized spin excitation close to the spin-helix regime
G. Salis, M. P. Walser, P. Altmann +2
The time evolution of a local spin excitation in a (001)-confined two-dimensional electron gas subjected to Rashba and Dresselhaus spin-orbit interactions of similar strength is in…
L4Fe2As2Te1-xO4-yFy (L = Pr, Sm, Gd): a layered oxypnictide superconductor with Tc up to 45 K
S. Katrych, A. Pisoni, S. Bosma +5
The synthesis, structural and physical properties of iron lanthanide oxypnictide superconductors, L4Fe2As2Te1-xO4 (L = Pr, Sm, Gd), with transition temperature at ~ 25 K are report…
Magnetic field-dependence of the basal-plane superconducting anisotropy in YBa2Cu4O8 from small-angle neutron scattering measurements of the vortex lattice
Jonathan S. White, Charlotte J. Bowell, Alistair S. Cameron +9
We report a study of the basal-plane anisotropy of the superfluid density in underdoped YBaCuO (Y124), showing the effects of both the CuO planes and the fu…
Magnetic structure of superconducting Eu(Fe0.82Co0.18)2As2 as revealed by single-crystal neutron diffraction
W. T. Jin, S. Nandi, Y. Xiao +8
The magnetic structure of superconducting Eu(Fe0.82Co0.18)2As2 is unambiguously determined by single-crystal neutron diffraction. A long-range ferromagnetic order of the Eu2+ momen…
Acoustoelectric effects in very high-mobility -SiGe/Ge/SiGe heterostructure at low temperatures in high magnetic fields
I. L. Drichko, V. A. Malysh, I. Yu. Smirnov +4
The contactless Surface Acoustic Wave (SAW) technique was implemented to probe the high-frequency (ac) conductivity in a high-mobility -SiGe/Ge/SiGe structure in the integer qua…
Mössbauer studies of the peculiar magnetism in parent compounds of the iron-based superconductors
A. K. Jasek, K. Komedera, A. Blachowski +4
A review of the magnetism in the parent compounds of the iron-based superconductors is given based on the transmission Moessbauer spectroscopy of 57Fe and 151Eu. It was found that…
Quantum and thermal ionic motion, oxygen isotope effect, and superexchange distribution in LaCuO
P. S. Häfliger, S. Gerber, R. Pramod +11
We study the zero-point and thermal ionic motion in LaCuO by means of high-resolution neutron diffraction experiments. Our results demonstrate anisotropic motion of O and t…
s-wave pairing in the optimally-doped LaO0.5F0.5BiS2 superconductor
G. Lamura, T. Shiroka, P. Bonfa +11
We report on the magnetic and superconducting properties of LaO0.5F0.5BiS2 by means of zero- (ZF) and transverse-field (TF) muon-spin spectroscopy measurements (uSR). Contrary to p…
Critical current anisotropy in Nd-1111 single crystals and the infuence of neutron irradiation
M. Eisterer, V. Mishev, M. Zehetmayer +3
We report on angle-resolved magnetization measurements on NdFeAsOF (Nd-1111) single crystals. The field dependence of the critical current density, , is non-…
Remote sensor response study in the regime of the microwave radiation-induced magnetoresistance oscillations
Tianyu Ye, Ramesh Mani, Werner Wegscheider
A concurrent remote sensing and magneto-transport study of the microwave excited two dimensional electron system (2DES) at liquid Helium temperatures has been carried out using a c…
Remotely sensed transport in microwave photoexcited GaAs/AlGaAs two-dimensional electron system
Tianyu Ye, Ramesh Mani, Werner Wegscheider
We demonstrate a strong correlation between the magnetoresistive and the concurrent microwave reflection from the microwave photo-excited GaAs/AlGaAs two-dimensional electron syste…
Growth of whisker-like and bulk single crystals of PrFeAs(O,F) under high pressure
N. D. Zhigadlo
Superconducting whisker like and bulk single crystals of PrFeAs(O,F) were grown at 3 GPa and 1500 C from NaAs flux using the cubic anvil high pressure and high temperature techniqu…
Scanning Gate Imaging of quantum point contacts and the origin of the 0.7 Anomaly
Andrea Iagallo, Nicola Paradiso, Stefano Roddaro +6
The origin of the anomalous transport feature appearing at conductance G \approx 0.7 x (2e2/h) in quasi-1D ballistic devices - the so-called 0.7 anomaly - represents a long standin…
Electric field gradient wave (EFGW) in iron-based superconductor Ba(0.6)K(0.4)Fe2As2 studied by Mössbauer spectroscopy
A. K. Jasek, K. Komedera, A. Blachowski +4
The optimally doped 122 iron-based superconductor Ba(0.6)K(0.4)Fe2As2 has been studied by 57Fe Moessbauer spectroscopy versus temperature ranging from 4.2 K till 300 K with particu…
Interplay of fractional quantum Hall states and localization in quantum point contacts
S. Baer, C. Rössler, E. C. de Wiljes +5
We investigate integer and fractional quantum Hall states in quantum point contacts (QPCs) of different geometries, defined in AlGaAs/GaAs heterostructures employing different dopi…
Spin polarization, dephasing and photoinduced spin diffusion in (110)-grown two-dimensional electron systems
R. Voelkl, M. Schwemmer, M. Griesbeck +5
We study the optically induced spin polarization, spin dephasing and diffusion in several high-mobility two-dimensional electron systems, which are embedded in GaAs quantum wells g…
Criticality in a disordered quantum antiferromagnet by neutron diffraction
E. Wulf, D. Huvonen, J. -W. Kim +5
Field-induced magnetic ordering in the structurally disordered quantum magnets Ni(ClBr)4SC(NH), % and 13%, is studied by means of neutron diffra…
Pressure-induced quantum critical and multicritical points in a frustrated spin liquid
M. Thede, A. Mannig, M. Månsson +4
The quantum spin liquid compound (CHN)CuCl (PHCC) is studied by SR under hydrostatic pressures up to 23.6 kbar. At low temperatures, pressure-induced inco…
Spin-orbit splitting and effective masses in p-type GaAs two-dimensional hole gases
Fabrizio Nichele, Atindra Nath Pal, Roland Winkler +4
We present magnetotransport measurements performed on two-dimensional hole gases embedded in carbon doped p-type GaAs/AlGaAs heterostructures grown on [001] oriented substrates. A…
Characterization of Qubit Dephasing by Landau-Zener Interferometry
F. Forster, G. Petersen, S. Manus +5
Controlling coherent interaction at avoided crossings is at the heart of quantum information processing. The regime between sudden switches and adiabatic transitions is characteriz…
Imaging the Conductance of Integer and Fractional Quantum Hall Edge States
Nikola Pascher, Clemens Rössler, Thomas Ihn +3
We measure the conductance of a quantum point contact (QPC) while the biased tip of a scanning probe microscope induces a depleted region in the electron gas underneath. At finite…
Insulating state and giant non-local response in an InAs/GaSb quantum well in the quantum Hall regime
Fabrizio Nichele, Atindra Nath Pal, Patrick Pietsch +4
We present transport measurements performed in InAs/GaSb double quantum wells. At the electron-hole crossover tuned by a gate voltage, a strong increase in the longitudinal resisti…
The electronic specific heat of Ba1-xKxFe2As2 (x=0 to 1.0) from 2K to 380K
J. G. Storey, J. W. Loram, J. R. Cooper +2
Using a high-resolution differential technique we have determined the electronic specific heat coefficient gamma(T) of Ba1-xKxFe2As2 with x=0 to 1.0, at temperatures (T) from 2K to…
Impact of strong disorder on the static magnetic properties of the spin-chain compound BaCu2SiGeO7
T. Shiroka, F. Casola, W. Lorenz +3
The disordered quasi-1D magnet BaCu2SiGeO7 is considered as one of the best physical realizations of the random Heisenberg chain model, which features an irregular distribution of…