Peter Babkevich

Cette personne n’est plus à l’EPFL

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Publications associées (27)

Direct evidence for charge stripes in a layered cobalt oxide

Mechthild Enderle, Paul Gregory Freeman, Peter Babkevich

Recent experiments indicate that static stripe-like charge order is generic to the hole-doped copper oxide superconductors and competes with superconductivity. Here we show that a similar type of charge order is present in La-5/Sr-3(1)/3CoO4, an insulating ...

Springer2016

Phase diagram of diluted Ising ferromagnet LiHoxY1-xF4

Conradin Kraemer, Bastien Dalla Piazza, Julian Piatek, Henrik Moodysson Rønnow, Neda Nikseresht Ghanepour, Ivan Kovacevic, Peter Babkevich

We present a systematic study of the phase diagram of LiHoxY1-xF4 (0.25

Amer Physical Soc2016

Probing strongly hybridized nuclear-electronic states in a model quantum ferromagnet

Giovanni Boero, Julian Piatek, Henrik Moodysson Rønnow, Ivan Kovacevic, Peter Babkevich

We present direct local-probe evidence for strongly hybridized nuclear-electronic spin states of an Ising ferromagnet LiHoF4 in a transverse magnetic field. The nuclear-electronic states are addressed via a magnetic resonance in the GHz frequency range usi ...

2016

Pressure dependence of the magnetic order in CrAs: A neutron diffraction investigation

Henrik Moodysson Rønnow, Jonathan White, Peter Babkevich

The suppression of magnetic order with pressure concomitant with the appearance of pressure-induced superconductivity was recently discovered in CrAs. Here we present a neutron diffraction study of the pressure evolution of the helimagnetic ground state to ...

2015

Neutron spectroscopic study of crystal-field excitations and the effect of the crystal field on dipolar magnetism in LiRF4 (R = Gd, Ho, Er, Tm, and Yb)

Conradin Kraemer, Bastien Dalla Piazza, Henrik Moodysson Rønnow, Ivan Kovacevic, Peter Babkevich

We present a systematic study of the crystal-field interactions in the LiRF4 (R = Gd, Ho, Er, Tm, and Yb) family of rare-earth magnets. Using detailed inelastic neutron scattering measurements, we have been able to quantify the transition energies and wave ...

American Physical Society2015

Superconductivity in semimetallic Bi3O2S3

Henrik Moodysson Rønnow, Peter Babkevich, Lin Yang, David Parker

Here we report a further investigation on the thermodynamic and transport properties, and an assessment of theoretical calculations, for the BiS2- layered Bi3O2S3 superconductor. The polycrystalline sample is synthesized with a superconducting transition t ...

American Physical Society2015

Nonequilibrium hysteresis and spin relaxation in the mixed-anisotropy dipolar-coupled spin-glass LiHo0.5Er0.5F4

Bastien Dalla Piazza, Julian Piatek, Stephen Paul Neithardt, Henrik Moodysson Rønnow, Ivan Kovacevic, Peter Babkevich

We present a study of the model spin-glass LiHo0.5Er0.5F4 using simultaneous ac susceptibility, magnetization, and magnetocaloric effect measurements along with small angle neutron scattering ( SANS) at sub-Kelvin temperatures. All measured bulk quantities ...

American Physical Society2014

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