Zobrazeno 1 - 10
of 475
pro vyhledávání: '"Gierz, I"'
Autor:
Aeschlimann, S., Sato, S. A., Krause, R., Chávez-Cervantes, M., De Giovannini, U., Hübener, H., Forti, S., Coletti, C., Hanff, K., Rossnagel, K., Rubio, A., Gierz, I.
Floquet theory has spawned many exciting possibilities for electronic structure control with light with enormous potential for future applications. The experimental realization in solids, however, largely remains pending. In particular, the influence
Externí odkaz:
http://arxiv.org/abs/2102.12798
Autor:
Krause, R., Aeschlimann, S., Chavez-Cervantes, M., Perea-Causin, R., Brem, S., Malic, E., Forti, S., Fabbri, F., Coletti, C., Gierz, I.
Van-der-Waals heterostructures show many intriguing phenomena including ultrafast charge separation following strong excitonic absorption in the visible spectral range. However, despite the enormous potential for future applications in the field of o
Externí odkaz:
http://arxiv.org/abs/2012.09268
We theoretically investigate basic properties of nonequilibrium steady states of periodically-driven open quantum systems based on the full solution of the Maxwell-Bloch equation. In a resonantly driving condition, we find that the transverse relaxat
Externí odkaz:
http://arxiv.org/abs/1912.03176
Autor:
Aeschlimann, S., Rossi, A., Chávez-Cervantes, M., Krause, R., Arnoldi, B., Stadtmüller, B., Aeschlimann, M., Forti, S., Fabbri, F., Coletti, C., Gierz, I.
We use time- and angle-resolved photoemission spectroscopy (tr-ARPES) to investigate ultrafast charge transfer in an epitaxial heterostructure made of monolayer WS$_2$ and graphene. This heterostructure combines the benefits of a direct gap semicondu
Externí odkaz:
http://arxiv.org/abs/1904.01379
Autor:
Chávez-Cervantes, M., Topp, G. E., Aeschlimann, S., Krause, R., Sato, S. A., Sentef, M. A., Gierz, I.
Publikováno v:
Phys. Rev. Lett. 123, 036405 (2019)
Charge density waves (CDWs) are symmetry-broken ground states that commonly occur in low-dimensional metals due to strong electron-electron and/or electron-phonon coupling. The non-equilibrium carrier distribution established via photodoping with fem
Externí odkaz:
http://arxiv.org/abs/1810.09731
Publikováno v:
Phys. Rev. B 97, 201401 (2018)
One-dimensional Indium wires grown on Si(111) substrates, which are metallic at high temperatures, become insulating below $\sim100$ K due to the formation of a Charge Density Wave (CDW). The physics of this transition is not conventional and involve
Externí odkaz:
http://arxiv.org/abs/1803.05189
Autor:
Aeschlimann, S., Krause, R., Chávez-Cervantes, M., Bromberger, H., Al-Temimy, A., Coletti, C., Cavalleri, A., Gierz, I.
Publikováno v:
Phys. Rev. B 96, 020301 (2017)
The pseudospin of Dirac electrons in graphene manifests itself in a peculiar momentum anisotropy for photo-excited electron-hole pairs. These interband excitations are in fact forbidden along the direction of the light polarization, and are maximum p
Externí odkaz:
http://arxiv.org/abs/1701.06314
Autor:
Pomarico, E., Mitrano, M., Bromberger, H., Sentef, M. A., Al-Temimy, A., Coletti, C., Stöhr, A., Link, S., Starke, U., Cacho, C., Chapman, R., Springate, E., Cavalleri, A., Gierz, I.
Publikováno v:
Phys. Rev. B 95, 024304 (2017)
Electron-phonon coupling directly determines the stability of cooperative order in solids, including superconductivity, charge and spin density waves. Therefore, the ability to enhance or reduce electron-phonon coupling by optical driving may open up
Externí odkaz:
http://arxiv.org/abs/1607.02314
Autor:
Gierz, I., Calegari, F., Aeschlimann, S., Cervantes, M. Chavez, Cacho, C., Chapman, R. T., Springate, E., Link, S., Starke, U., Cavalleri, C. R. Ast A.
Publikováno v:
Phys. Rev. Lett. 115, 086803 (2015)
Direct and inverse Auger scattering are amongst the primary processes that mediate the thermalization of hot carriers in semiconductors. These two processes involve the annihilation or generation of an electron-hole pair by exchanging energy with a t
Externí odkaz:
http://arxiv.org/abs/1506.00120
Autor:
Bromberger, H., Ermolov, A., Belli, F., Liu, H., Calegari, F., Chavez-Cervantes, M., Li, M. T., Lin, C. T., Abdolvand, A., Russell, P. St. J., Cavalleri, A., Travers, J. C., Gierz, I.
A recently developed source of ultraviolet radiation, based on optical soliton propagation in a gas-filled hollow-core photonic crystal fiber, is applied here to angle-resolved photoemission spectroscopy (ARPES). Near-infrared femtosecond pulses of o
Externí odkaz:
http://arxiv.org/abs/1504.07505