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
29 papers · 1 filter
Localized versus itinerant magnetic moments in Na0.72CoO2
J. L. Gavilano, B. Pedrini, K. Magishi +5
Based on experimental 59Co-NMR data in the temperature range between 0.1 and 300 K, we address the problem of the character of the Co 3d-electron based magnetism in Na0.7CoO2. Temp…
Thermoelectricity of EuCu{2}(Ge{1-x}Si{x}){2} intermetallics
Veljko Zlatic, R. Monnier, J. Freericks
The evolution of the thermopower EuCu{2}(Ge{1-x}Si{x}){2} intermetallics, which is induced by the Si-Ge substitution, is explained by the Kondo scattering of conduction electrons o…
1/f noise in a dilute GaAs two-dimensional hole system in the insulating phase
G. Deville, R. Leturcq, D. L'Hote +3
We have measured the resistance and the 1/f resistance noise of a two-dimensional low density hole system in a high mobility GaAs quantum well at low temperature. At densities lowe…
Magnetic field symmetry and phase rigidity of the nonlinear conductance in a ring
R. Leturcq, D. Sanchez, G. Gotz +4
We have performed nonlinear transport measurements as a function of a perpendicular magnetic field in a semiconductor Aharonov-Bohm ring connected to two leads. While the voltage-s…
Measuring the Penetration Depth Anisotropy in MgB using Small-Angle Neutron Scattering
D. Pal, L. DeBeer-Schmitt, T. Bera +7
Using small-angle neutron scattering we have measured the misalignment between an applied field of 4 kOe and the flux-line lattice in MgB, as the field is rotated away from the…
Strong magnetic pair breaking in Mn substituted MgB_2 single crystals
K. Rogacki, B. Batlogg, J. Karpinski +9
Magnetic ions (Mn) were substituted in MgB_2 single crystals resulting in a strong pair-breaking effect. The superconducting transition temperature, T_c, in Mg_{1-x}Mn_xB_2 has bee…
Single-hole transistor in p-type GaAs/AlGaAs heterostructures
Boris Grbic, Renaud Leturcq, Klaus Ensslin +2
A single-hole transistor is patterned in a p-type, C-doped GaAs/AlGaAs heterostructure by AFM oxidation lithography. Clear Coulomb blockade resonances have been observed at T=300 m…
Optical evidence for a magnetically driven structural transition in the spin web
G. Caimi, L. Degiorgi, H. Berger +1
is a modest frustrated spin system, which undergoes an anti-ferromagnetic transition at . The anti-ferromagnetic spin alignment in be…
Magneto-optical evidence of double exchange in a percolating lattice
G. Caimi, A. Perucchi, L. Degiorgi +5
Substituting by in ferromagnetic leads to a percolation limited magnetic ordering. We present and discuss magneto-optical data of the series,…
Optical investigation of the metal-insulator transition in
A. Perucchi, L. Degiorgi, R. Hu +2
We present a comprehensive optical study of the narrow gap semiconductor. From the optical reflectivity, measured from the far infrared up to the ultraviolet spectral rang…
The effect of magnetic impurities in a two-band superconductor: A point-contact study of Mn-substituted MgB2 single crystals
R. S. Gonnelli, D. Daghero, G. A. Ummarino +8
We present the first results of directional point-contact measurements in Mg_{1-x}Mn_{x}B_2 single crystals, with x up to 0.015 and bulk T_c down to 13.3 K. The order parameters De…
Counting statistics of single-electron transport in a quantum dot
S. Gustavsson, R. Leturcq, B. Simovic +6
We have measured the full counting statistics (FCS) of current fluctuations in a semiconductor quantum dot (QD) by real-time detection of single electron tunneling with a quantum p…
The two colors of MgB2
V. Guritanu, A. B. Kuzmenko, D. van der Marel +3
We present the anisotropic optical conductivity of MgB between 0.1 and 3.7 eV at room temperature obtained on single crystals of different purity by the spectroscopic ellipso…
Phase coherence in the inelastic cotunneling regime
M. Sigrist, T. Ihn, K. Ensslin +3
Two quantum dots with tunable mutual tunnel coupling have been embedded in a two-terminal Aharonov-Bohm geometry. Aharonov-Bohm oscillations are investigated in the cotunneling reg…
Evidence of Water-related Discrete Trap State Formation in Pentacene Single Crystal Field-Effect Transistors
C. Goldmann, D. J. Gundlach, B. Batlogg
We report on the generation of a discrete trap state during negative gate bias stress in pentacene single crystal "flip-crystal" field-effect transistors with a SiO2 gate dielectri…
Magnetic inversion symmetry breaking and ferroelectricity in TbMnO3
M. Kenzelmann, A. B. Harris, S. Jonas +7
TbMnO3 is an orthorhombic insulator where incommensurate spin order for temperature T_N < 41K is accompanied by ferroelectric order for T < 28K. To understand this, we establish th…
Bose-Einstein Condensation of S = 1 Ni spin degrees of freedom in NiCl2-4SC(NH2)2
V. S. Zapf, D. Zocco, M. Jaime +4
It has recently been suggested that the organic compound NiCl-4SC(NH) (DTN) exhibits Bose-Einstein Condensation (BEC) of the Ni spin degrees of freedom for fields appli…
Probing the Kondo density of states in a three-terminal quantum ring
R. Leturcq, L. Schmid, K. Ensslin +3
We have measured the Kondo effect in a quantum ring connected to three terminals. In this configuration non-linear transport measurements allow to check which lead contributes to t…
Superconducting vortex profile from fixed point measurements The Lazy Fisherman tunnelling microscopy method
A. Kohen, T. Cren, Th. Proslier +7
We introduce a mode of operation for studying the vortex phase in superconductors using scanning tunnelling microscopy (STM). While in the conventional STM method, the tip is scann…
de Haas-van Alphen effect investigation of the electronic structure of Al substituted MgB_2
A. Carrington, J. D. Fletcher, J. R. Cooper +7
We report a de Haas-van Alphen (dHvA) study of the electronic structure of Al doped crystals of MgB. We have measured crystals with % Al which have a of 33.6 K,…
Infrared signature of the charge-density-wave gap in
A. Perucchi, L. Degiorgi, H. Berger
The chain-like compound undergoes a charge-density-wave (CDW) transition at , most strongly affecting the conductivity perpendicular to the chains. We meas…
Cotunneling-mediated transport through excited states in the Coulomb blockade regime
R. Schleser, T. Ihn, E. Ruh +5
We present finite bias transport measurements on a few-electron quantum dot. In the Coulomb blockade regime, strong signatures of inelastic cotunneling occur which can directly be…
Finite bias charge detection in a quantum dot
R. Schleser, E. Ruh, T. Ihn +3
We present finite bias measurements on a quantum dot coupled capacitively to a quantum point contact used as a charge detector. The transconductance signal measured in the quantum…
Comment on "Enhanced two-dimensional properties of the four-layered cuprate high-Tc superconductor TlBa-2Ca-3Cu-4O-y"
I. L. Landau, H. R. Ott
We reanalyze published magnetization data and demonstrate that the conclusion of the original authors, claiming enhanced two-dimensional properties of the cuprate superconductor Tl…