Ultrafast Melting of a Charge-Density Wave in the Mott Insulator 1T-TaS2

S. Hellmann; M. Beye; C. Sohrt; T. Rohwer; F. Sorgenfrei; H. Redlin; M. Kallaene; M. Marczynski-Buehlow; Franz Hennies; M. Bauer; A. Foehlisch; L. Kipp; W. Wurth; K. Rossnagel

doi:10.1103/PhysRevLett.105.187401

Ultrafast Melting of a Charge-Density Wave in the Mott Insulator 1T-TaS2

S. Hellmann, M. Beye, C. Sohrt, T. Rohwer, F. Sorgenfrei, H. Redlin, M. Kallaene, M. Marczynski-Buehlow, Franz Hennies, M. Bauer, A. Foehlisch, L. Kipp, W. Wurth, K. Rossnagel

MAX IV Laboratory

Research output: Contribution to journal › Article › peer-review

Abstract

Femtosecond time-resolved core-level photoemission spectroscopy with a free-electron laser is used to measure the atomic-site specific charge-order dynamics of the charge-density wave in the Mott insulator 1T-TaS2. After strong photoexcitation, a prompt loss of charge order and subsequent fast equilibration dynamics of the electron-lattice system are observed. On the time scale of electron-phonon thermalization, about 1 ps, the system is driven across a phase transition from a long-range charge ordered state to a quasiequilibrium state with domainlike short-range charge and lattice order. The experiment opens the way to study the nonequilibrium dynamics of condensed matter systems with full elemental, chemical, and atomic-site selectivity.

Original language	English
Article number	187401
Journal	Physical Review Letters
Volume	105
Issue number	18
DOIs	https://doi.org/10.1103/PhysRevLett.105.187401
Publication status	Published - 2010

Subject classification (UKÄ)

Physical Sciences
Natural Sciences

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title = "Ultrafast Melting of a Charge-Density Wave in the Mott Insulator 1T-TaS2",

abstract = "Femtosecond time-resolved core-level photoemission spectroscopy with a free-electron laser is used to measure the atomic-site specific charge-order dynamics of the charge-density wave in the Mott insulator 1T-TaS2. After strong photoexcitation, a prompt loss of charge order and subsequent fast equilibration dynamics of the electron-lattice system are observed. On the time scale of electron-phonon thermalization, about 1 ps, the system is driven across a phase transition from a long-range charge ordered state to a quasiequilibrium state with domainlike short-range charge and lattice order. The experiment opens the way to study the nonequilibrium dynamics of condensed matter systems with full elemental, chemical, and atomic-site selectivity.",

author = "S. Hellmann and M. Beye and C. Sohrt and T. Rohwer and F. Sorgenfrei and H. Redlin and M. Kallaene and M. Marczynski-Buehlow and Franz Hennies and M. Bauer and A. Foehlisch and L. Kipp and W. Wurth and K. Rossnagel",

year = "2010",

doi = "10.1103/PhysRevLett.105.187401",

language = "English",

volume = "105",

journal = "Physical Review Letters",

issn = "1079-7114",

publisher = "American Physical Society",

number = "18",

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TY - JOUR

T1 - Ultrafast Melting of a Charge-Density Wave in the Mott Insulator 1T-TaS2

AU - Hellmann, S.

AU - Beye, M.

AU - Sohrt, C.

AU - Rohwer, T.

AU - Sorgenfrei, F.

AU - Redlin, H.

AU - Kallaene, M.

AU - Marczynski-Buehlow, M.

AU - Hennies, Franz

AU - Bauer, M.

AU - Foehlisch, A.

AU - Kipp, L.

AU - Wurth, W.

AU - Rossnagel, K.

PY - 2010

Y1 - 2010

N2 - Femtosecond time-resolved core-level photoemission spectroscopy with a free-electron laser is used to measure the atomic-site specific charge-order dynamics of the charge-density wave in the Mott insulator 1T-TaS2. After strong photoexcitation, a prompt loss of charge order and subsequent fast equilibration dynamics of the electron-lattice system are observed. On the time scale of electron-phonon thermalization, about 1 ps, the system is driven across a phase transition from a long-range charge ordered state to a quasiequilibrium state with domainlike short-range charge and lattice order. The experiment opens the way to study the nonequilibrium dynamics of condensed matter systems with full elemental, chemical, and atomic-site selectivity.

AB - Femtosecond time-resolved core-level photoemission spectroscopy with a free-electron laser is used to measure the atomic-site specific charge-order dynamics of the charge-density wave in the Mott insulator 1T-TaS2. After strong photoexcitation, a prompt loss of charge order and subsequent fast equilibration dynamics of the electron-lattice system are observed. On the time scale of electron-phonon thermalization, about 1 ps, the system is driven across a phase transition from a long-range charge ordered state to a quasiequilibrium state with domainlike short-range charge and lattice order. The experiment opens the way to study the nonequilibrium dynamics of condensed matter systems with full elemental, chemical, and atomic-site selectivity.

U2 - 10.1103/PhysRevLett.105.187401

DO - 10.1103/PhysRevLett.105.187401

M3 - Article

C2 - 21231136

SN - 1079-7114

VL - 105

JO - Physical Review Letters

JF - Physical Review Letters

IS - 18

M1 - 187401

ER -

Ultrafast Melting of a Charge-Density Wave in the Mott Insulator 1T-TaS2

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