Structural involvement in the melting of the charge density wave in 1T-TiSe2
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{
"revision": 10,
"id": "711",
"created": "2021-01-15T14:27:22.347245+00:00",
"metadata": {
"doi": "10.24435/materialscloud:b3-e5",
"status": "published",
"title": "Structural involvement in the melting of the charge density wave in 1T-TiSe2",
"mcid": "2021.26",
"license_addendum": null,
"_files": [
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"description": "All experimental and model data presented in the manuscript. See README.txt for further information.",
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"_oai": {
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"keywords": [
"TiSe2",
"Charge Density Wave",
"XFEL",
"Transient X-Ray Diffraction",
"MARVEL",
"Paul Scherrer Institute",
"SNSF"
],
"conceptrecid": "710",
"is_last": true,
"references": [
{
"type": "Preprint",
"doi": "",
"url": "https://arxiv.org/abs/2006.13702",
"comment": "Preprint in which the data is included.",
"citation": "M. Burian, M. Porer, J. R. L. Mardegan, V. Esposito, S. Parchenko, B. Burganov, N. Gurung, M. Ramakrishnan, V. Scagnoli, H. Ueda, S. Francoual, F. Fabrizi, Y. Tanaka, T. Togashi, Y. Kubota, M. Yabashi, K. Rossnagel, S. L. Johnson, U. Staub, ArXiv. 2006.13702 (2020)."
},
{
"type": "Journal reference",
"doi": "",
"comment": "Article in which the data is included.",
"citation": "M. Burian, M. Porer, J. R. L. Mardegan, V. Esposito, S. Parchenko, B. Burganov, N. Gurung, M. Ramakrishnan, V. Scagnoli, H. Ueda, S. Francoual, F. Fabrizi, Y. Tanaka, T. Togashi, Y. Kubota, M. Yabashi, K. Rossnagel, S. L. Johnson, U. Staub, Physical Review Research (accepted)."
}
],
"publication_date": "Jan 27, 2021, 17:40:08",
"license": "Creative Commons Attribution 4.0 International",
"id": "711",
"description": "The simultaneous condensation of electronic and structural degrees of freedom gives rise to new states of matter, including superconductivity and charge-density-wave formation. When exciting such a condensed system, it is commonly assumed that the ultrafast laser pulse disturbs primarily the electronic order, which in turn destabilizes the atomic structure. Contrary to this conception, we show here that structural destabilization of few atoms causes macroscopic melting of the charge-density wave in 1T-TiSe2. In detail, we use ultrafast pump-probe non-resonant and resonant X-ray diffraction to track the periodic lattice distortion and the electronic charge density wave in 1T-TiSe2 upon optical excitation. We observe a fluence regime in which the periodic lattice deformation is strongly suppressed but the charge density wave related Se 4p orbital order remains mostly intact. Complete melting of both structural and electronic order occurs 4-5 times faster than expected from a purely electronic charge-screening process, strongly suggesting a structurally assisted weakening of excitonic correlations. Our experimental data provides insight on the intricate coupling between structural and electronic order in stabilizing the periodic-lattice-distortion/charge-density-wave state in 1T-TiSe2. The results further show that electron-phonon-coupling can lead to different, energy dependent phase-transition pathways in condensed matter systems, opening new possibilities in the conception of non-equilibrium phenomena at the ultrafast scale.",
"version": 1,
"contributors": [
{
"affiliations": [
"Swiss Light Source, Paul Scherrer Institute, 5232 Villigen PSI, Switzerland"
],
"familyname": "Burian",
"givennames": "Max"
},
{
"affiliations": [
"Swiss Light Source, Paul Scherrer Institute, 5232 Villigen PSI, Switzerland"
],
"familyname": "Porer",
"givennames": "Michael"
},
{
"affiliations": [
"Swiss Light Source, Paul Scherrer Institute, 5232 Villigen PSI, Switzerland",
"Deutsches Elektronen-Synchrotron DESY, Notkestra\u00dfe 85, 22607 Hamburg, Germany"
],
"familyname": "Mardegan",
"givennames": "Jose R.L."
},
{
"affiliations": [
"Swiss Light Source, Paul Scherrer Institute, 5232 Villigen PSI, Switzerland",
"Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA"
],
"familyname": "Esposito",
"givennames": "Vincent"
},
{
"affiliations": [
"Swiss Light Source, Paul Scherrer Institute, 5232 Villigen PSI, Switzerland",
"Laboratory for Mesoscopic Systems, Department of Materials, ETH Zurich, 8093 Z\u00fcrich, Switzerland"
],
"familyname": "Parchenko",
"givennames": "Sergii"
},
{
"affiliations": [
"Institute for Quantum Electronics, ETH Z\u00fcrich, Auguste-Piccard-Hof 1, 8093 Z\u00fcrich, Switzerland"
],
"familyname": "Bulat",
"givennames": "Burganov"
},
{
"affiliations": [
"Laboratory for Mesoscopic Systems, Department of Materials, ETH Zurich, 8093 Z\u00fcrich, Switzerland",
"Laboratory for Multiscale Materials Experiments, Paul Scherrer Institute, 5232 Villigen PSI, Switzerland"
],
"familyname": "Gurung",
"givennames": "Namrata"
},
{
"affiliations": [
"Swiss Light Source, Paul Scherrer Institute, 5232 Villigen PSI, Switzerland"
],
"familyname": "Ramakrishnan",
"givennames": "Mahesh"
},
{
"affiliations": [
"Laboratory for Mesoscopic Systems, Department of Materials, ETH Zurich, 8093 Z\u00fcrich, Switzerland",
"Laboratory for Multiscale Materials Experiments, Paul Scherrer Institute, 5232 Villigen PSI, Switzerland"
],
"familyname": "Scagnoli",
"givennames": "Valerio"
},
{
"affiliations": [
"Swiss Light Source, Paul Scherrer Institute, 5232 Villigen PSI, Switzerland"
],
"familyname": "Ueda",
"givennames": "Hirkoi"
},
{
"affiliations": [
"Deutsches Elektronen-Synchrotron DESY, Notkestra\u00dfe 85, 22607 Hamburg, Germany"
],
"familyname": "Francoual",
"givennames": "Sonia"
},
{
"affiliations": [
"Diamond Light Source Ltd., Didcot, Oxfordshire OX11 0DE, United Kingdom"
],
"familyname": "Fabrizi",
"givennames": "Federica"
},
{
"affiliations": [
"RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan"
],
"familyname": "Tanaka",
"givennames": "Yoshikazu"
},
{
"affiliations": [
"RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan",
"Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan"
],
"familyname": "Togashi",
"givennames": "Tadashi"
},
{
"affiliations": [
"Institut f\u00fcr Experimentelle und Angewandte Physik, Christian-Albrechts-Universit\u00e4t zu Kiel, D-24098 Kiel, Germany",
"Ruprecht-Haensel-Labor, Deutsches Elektronen-Synchrotron DESY, D-22607 Hamburg, Germany"
],
"familyname": "Rossnagel",
"givennames": "Kai"
},
{
"affiliations": [
"Institute for Quantum Electronics, ETH Z\u00fcrich, Auguste-Piccard-Hof 1, 8093 Z\u00fcrich, Switzerland",
"SwissFEL, Paul Scherrer Institute, 5232 Villigen PSI, Switzerland"
],
"familyname": "Johnson",
"givennames": "Steven L."
},
{
"email": "urs.staub@psi.ch",
"affiliations": [
"Swiss Light Source, Paul Scherrer Institute, 5232 Villigen PSI, Switzerland"
],
"familyname": "Staub",
"givennames": "Urs"
}
],
"edited_by": 100
},
"updated": "2021-12-06T14:12:02.968905+00:00"
}