title: Ultrafast Optical Control of the Electronic Properties of ZrTe₅.
abstract: We report on the temperature dependence of the ZrTe(5) electronic properties, studied at equilibrium and out of equilibrium, by means of time and angle resolved photoelectron spectroscopy. Our results unveil the dependence of the electronic band structure across the Fermi energy on the sample temperature. This finding is regarded as the dominant mechanism responsible for the anomalous resistivity observed at T*∼160  K along with the change of the charge carrier character from holelike to electronlike. Having addressed these long-lasting questions, we prove the possibility to control, at the ultrashort time scale, both the binding energy and the quasiparticle lifetime of the valence band. These experimental evidences pave the way for optically controlling the thermoelectric and magnetoelectric transport properties of ZrTe(5).
authors.affiliation: Universitá degli Studi di Trieste, Via A. Valerio 2, Trieste 34127, Italy.
authors.forename: G
authors.initials: G
authors.lastname: Manzoni
authors.affiliation: Universitá degli Studi di Trieste, Via A. Valerio 2, Trieste 34127, Italy.
authors.forename: A
authors.initials: A
authors.lastname: Sterzi
authors.affiliation: Elettra-Sincrotrone Trieste S. C. p. A., Strada Statale 14, km 163.5, 34149 Basovizza, Trieste, Italy.
authors.forename: A
authors.initials: A
authors.lastname: Crepaldi
authors.affiliation: Universitá degli Studi di Trieste, Via A. Valerio 2, Trieste 34127, Italy.
authors.forename: M
authors.initials: M
authors.lastname: Diego
authors.affiliation: Elettra-Sincrotrone Trieste S. C. p. A., Strada Statale 14, km 163.5, 34149 Basovizza, Trieste, Italy.
authors.forename: F
authors.initials: F
authors.lastname: Cilento
authors.affiliation: C.N.R.-I.O.M., Strada Statale 14, km 163.5, 34149 Trieste, Italy.
authors.forename: M
authors.initials: M
authors.lastname: Zacchigna
authors.affiliation: Institute of Condensed Matter Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland.
authors.forename: Ph
authors.initials: P
authors.lastname: Bugnon
authors.affiliation: Institute of Condensed Matter Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland.
authors.forename: H
authors.initials: H
authors.lastname: Berger
authors.affiliation: Institute of Condensed Matter Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland.
authors.forename: A
authors.initials: A
authors.lastname: Magrez
authors.affiliation: Institute of Condensed Matter Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland.
authors.forename: M
authors.initials: M
authors.lastname: Grioni
authors.affiliation: Universitá degli Studi di Trieste, Via A. Valerio 2, Trieste 34127, Italy.|Elettra-Sincrotrone Trieste S. C. p. A., Strada Statale 14, km 163.5, 34149 Basovizza, Trieste, Italy.|International Faculty, University of Köln, 50937 Köln, Germany.
authors.forename: F
authors.initials: F
authors.lastname: Parmigiani