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
21 papers · 1 filter
Large nuclear spin polarization in gate-defined quantum dots using a single-domain nanomagnet
Gunnar Petersen, Eric A. Hoffmann, Dieter Schuh +3
The electron-nuclei (hyperfine) interaction is central to spin qubits in solid state systems. It can be a severe decoherence source but also allows dynamic access to the nuclear sp…
Field-induced quantum soliton lattice in a frustrated two-leg spin-1/2 ladder
F. Casola, T. Shiroka, A. Feiguin +10
The field-induced quantum phase transitions (QPT) of the spin ladder material Bi(Cu(1-x)Znx)2PO6 have been investigated via 31P nuclear magnetic resonance (NMR) on single-crystal s…
Bond Randomness Induced Magnon Decoherence in a Spin-1/2 Ladder Compound
B. Náfrádi, T. Keller, H. Manaka +3
We have used a combination of neutron resonant spin-echo and triple-axis spectroscopies to determine the energy and linewidth of the magnon resonance in IPA-Cu(ClBr$_{0.05…
Counting Statistics and Dephasing Transition in an Electronic Mach-Zehnder Interferometer
A. Helzel, L. V. Litvin, I. P. Levkivskyi +3
It was recently suggested that a novel type of phase transition may occur in the visibility of electronic Mach-Zehnder Interferometers. Here, we present experimental evidence for t…
Microscopic Coexistence of Antiferromagnetic and Spin-Glass States
S. Chillal, M. Thede, F. J. Litterst +4
The disordered antiferromagnet \pfn (\pfns) is investigated in a wide temperature range by combining Mössbauer spectroscopy and neutron diffraction experiments. It is demonstrated…
Cyclic Depopulation of Edge States in a large Quantum Dot
Stephan Baer, Clemens Rössler, Thomas Ihn +3
We investigate magneto-transport through a 1.6 μm wide quantum dot (QD) with adjacent charge detector, for different integer filling factors in the QD and constrictions. When this…
Non-linear lattice response of SmFeAsO_{1-x}F_{x} superconductor to hydrostatic pressure
E. Liarokapis, M. Calamiotou, N. D. Zhigadlo +2
Hydrostatic pressure Raman measurements have been carried out on the SmFeAsO series of oxypnictides with varying amount of doping (F substitution for O and Co for Fe) and transitio…
Excitations in a quantum spin liquid with random bonds
D. Huvonen, S. Zhao, G. Ehlers +3
We present results of inelastic neutron scattering study on two bond disordered quasi twodimensional quantum magnets (CHN)Cu(ClBr) with x=0.035 and…
Effect of rotation of the polarization of linearly polarized microwaves on the radiation-induced magnetoresistance oscillations
A. N. Ramanayaka, R. G. Mani, J. Iñarrea +1
Light-matter coupling is investigated by rotating, by an angle θ, the polarization of linearly polarized microwaves with respect to the long-axis of GaAs/AlGaAs Hall-bar electron d…
Tunable Charge Detectors for Semiconductor Quantum Circuits
Clemens Rössler, Tobias Krähenmann, Stephan Baer +4
Nanostructures defined in high-mobility two-dimensional electron systems offer a unique way of controlling the microscopic details of the investigated device. Quantum point contact…
Asymmetric Thermal Lineshape Broadening in a Gapped 3-Dimensional Antiferromagnet - Evidence for Strong Correlations at Finite Temperature
D. L. Quintero-Castro, B. Lake, A. T. M. N. Islam +6
It is widely believed that magnetic excitations become increasingly incoherent as temperature is raised due to random collisions which limit their lifetime. This picture is based o…
Dimensional crossover of spin chains in a transverse staggered field: an NMR study
F. Casola, T. Shiroka, V. Glazkov +6
Heisenberg spin-1/2 chain materials are known to substantially alter their static and dynamic properties when experiencing an effective transverse staggered field originating from…
Resolving Spin-Orbit and Hyperfine Mediated Electric Dipole Spin Resonance in a Quantum Dot
M. Shafiei, K. C. Nowack, C. Reichl +2
We investigate the electric manipulation of a single electron spin in a single gate-defined quantum dot. We observe that so-far neglected differences between the hyperfine and spin…
Phase Transition of the Uniaxial Disordered Ferroelectric SrBaNbO
S. N. Gvasaliya, R. A. Cowley, L. I. Ivleva +3
We report a neutron scattering study of a ferroelectric phase transition in SrBaNbO (SBN-61). The ferroelectric polarization is along the crystallographic…
Interference of electrons in backscattering through a quantum point contact
A. A. Kozikov, C. Rössler, T. Ihn +3
Scanning gate microscopy is used to locally investigate electron transport in a high-mobility two-dimensional electron gas formed in a GaAs/AlGaAs heterostructure. Using quantum po…
Bulk electronic structure of superconducting LaRu2P2 single crystals measured by soft x-ray angle-resolved photoemission spectroscopy
E. Razzoli, M. Kobayashi, V. N. Strocov +10
We present a soft X-ray angle-resolved photoemission spectroscopy (SX-ARPES) study of the stoichiometric pnictide superconductor LaRu2P2. The observed electronic structure is in go…
Strain-induced enhancement of the electron energy relaxation in strongly correlated superconductors
C. Gadermaier, V. V. Kabanov, A. S. Alexandrov +12
We use femtosecond optical spectroscopy to systematically measure the primary energy relaxation rate k1 of photoexcited carriers in cuprate and pnictide superconductors. We find th…
Phase Diagram of the Dzyaloshinskii-Moriya Helimagnet Ba2CuGe2O7 in Canted Magnetic Fields
S. Muhlbauer, S. Gvasaliya, E. Pomjakushina +1
The evolution of different magnetic structures of non-centrosymmetric Ba2CuGe2O7 is systematically studied as function of the orientation of the magnetic field H. Neutron diffracti…
Magnetic-field induced multiferroicity in a quantum critical frustrated spin liquid
F. Schrettle, S. Krohns, P. Lunkenheimer +4
Dielectric spectroscopy is used to check for the onset of polar order in the quasi one-dimensional quantum spin system Sul-Cu2Cl4 when passing from the spin-liquid state into the o…
Enlarged magnetic focusing radius of photoinduced ballistic currents
Markus Stallhofer, Christoph Kastl, Marcel Brändlein +5
We exploit GaAs-based quantum point contacts as mesoscopic detectors to analyze the ballistic flow of photogenerated electrons in a two-dimensional electron gas at a perpendicular…
Field-induced criticality in a gapped quantum magnet with bond disorder
D. Hüvonen, S. Zhao, M. Månsson +6
Neutron diffraction and calorimetric measurements are used to study the field-induced quantum phase transition in piperazinium-Cu(ClBr) (, x=3.5% and x=7.5…