The energy and momentum selectivity of time- and angle-resolved photoemission spectroscopy is exploited to address the ultrafast dynamics of the antiferromagnetic spin density wave (SDW) transition photoexcited in epitaxial thin films of chromium. We are able to quantitatively extract the evolution of the SDW order parameter Δ through the ultrafast phase transition and show that Δ is governed by the transient temperature of the thermalized electron gas, in a mean field description. The complete destruction of SDW order on a sub-100 fs time scale is observed, much faster than for conventional charge density wave materials. Our results reveal that equilibrium concepts for phase transitions such as the order parameter may be utilized even in t...
In Mott insulators the evolution of antiferromagnetic order to superconducting or charge-density-wav...
The spin dynamics triggered by an ultrashort optical excitation can lead to a variety of behaviors d...
International audienceAbstract Femtosecond light-induced phase transitions between different macrosc...
The energy and momentum selectivity of time- and angle-resolved photoemission spectroscopy is exploi...
The energy and momentum selectivity of time- and angle-resolved photoemission spectroscopy is exploi...
We report on the dynamics of the structural order parameter in a chromium film using synchrotron rad...
Symmetry breaking and the emergence of order is one of the most fascinating phenomena in condensed m...
Thin chromium films molecular beam epitaxy grown on partly relaxed MgO/Fe substrates held below T = ...
The interaction of many-body systems with intense light pulses may lead to novel emergent phenomena ...
The interaction of many-body systems with intense light pulses may lead to novel emergent phenomena ...
Abstract We present a femtosecond time-resolved optical spectroscopy (TRS) as an experimental tool t...
Complex systems, which consist of a large number of interacting constituents, often exhibit universa...
The spin-density wave properties of polycrystalline chromium thin films were determined by using inf...
Ultrafast photodoping of the Mott insulators, possessing strong correlation between electronic and m...
Understanding of ultrafast spin dynamics is crucial for future spintronic applications. In particula...
In Mott insulators the evolution of antiferromagnetic order to superconducting or charge-density-wav...
The spin dynamics triggered by an ultrashort optical excitation can lead to a variety of behaviors d...
International audienceAbstract Femtosecond light-induced phase transitions between different macrosc...
The energy and momentum selectivity of time- and angle-resolved photoemission spectroscopy is exploi...
The energy and momentum selectivity of time- and angle-resolved photoemission spectroscopy is exploi...
We report on the dynamics of the structural order parameter in a chromium film using synchrotron rad...
Symmetry breaking and the emergence of order is one of the most fascinating phenomena in condensed m...
Thin chromium films molecular beam epitaxy grown on partly relaxed MgO/Fe substrates held below T = ...
The interaction of many-body systems with intense light pulses may lead to novel emergent phenomena ...
The interaction of many-body systems with intense light pulses may lead to novel emergent phenomena ...
Abstract We present a femtosecond time-resolved optical spectroscopy (TRS) as an experimental tool t...
Complex systems, which consist of a large number of interacting constituents, often exhibit universa...
The spin-density wave properties of polycrystalline chromium thin films were determined by using inf...
Ultrafast photodoping of the Mott insulators, possessing strong correlation between electronic and m...
Understanding of ultrafast spin dynamics is crucial for future spintronic applications. In particula...
In Mott insulators the evolution of antiferromagnetic order to superconducting or charge-density-wav...
The spin dynamics triggered by an ultrashort optical excitation can lead to a variety of behaviors d...
International audienceAbstract Femtosecond light-induced phase transitions between different macrosc...