Optically induced lattice deformations, electronic structure changes, and enhanced superconductivity in YBa2Cu3O6.48

Resonant optical excitation of apical oxygen vibrational modes in the normal state of underdoped YBa2Cu3O6+x induces a transient state with optical properties similar to those of the equilibrium superconducting state. Amongst these, a divergent imaginary conductivity and a plasma edge are transientl...
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Autor*in:	R. Mankowsky [verfasserIn] M. Fechner [verfasserIn] M. Först [verfasserIn] A. von Hoegen [verfasserIn] J. Porras [verfasserIn] T. Loew [verfasserIn] G. L. Dakovski [verfasserIn] M. Seaberg [verfasserIn] S. Möller [verfasserIn] G. Coslovich [verfasserIn] B. Keimer [verfasserIn] S. S. Dhesi [verfasserIn] A. Cavalleri [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2017

Übergeordnetes Werk:	In: Structural Dynamics - AIP Publishing LLC and ACA, 2016, 4(2017), 4, Seite 044007-044007-9
Übergeordnetes Werk:	volume:4 ; year:2017 ; number:4 ; pages:044007-044007-9

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.1063/1.4977672

Katalog-ID:	DOAJ003200930

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Mankowsky</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="245" ind1="1" ind2="0"><subfield code="a">Optically induced lattice deformations, electronic structure changes, and enhanced superconductivity in YBa2Cu3O6.48</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">2017</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">Text</subfield><subfield code="b">txt</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">Computermedien</subfield><subfield code="b">c</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">Online-Ressource</subfield><subfield code="b">cr</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">Resonant optical excitation of apical oxygen vibrational modes in the normal state of underdoped YBa2Cu3O6+x induces a transient state with optical properties similar to those of the equilibrium superconducting state. 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callnumber-first	Q - Science
author	R. Mankowsky
spellingShingle	R. Mankowsky misc QD901-999 misc Crystallography Optically induced lattice deformations, electronic structure changes, and enhanced superconductivity in YBa2Cu3O6.48
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topic_title	QD901-999 Optically induced lattice deformations, electronic structure changes, and enhanced superconductivity in YBa2Cu3O6.48
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title	Optically induced lattice deformations, electronic structure changes, and enhanced superconductivity in YBa2Cu3O6.48
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title_full	Optically induced lattice deformations, electronic structure changes, and enhanced superconductivity in YBa2Cu3O6.48
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author_browse	R. Mankowsky M. Fechner M. Först A. von Hoegen J. Porras T. Loew G. L. Dakovski M. Seaberg S. Möller G. Coslovich B. Keimer S. S. Dhesi A. Cavalleri
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title_sort	optically induced lattice deformations, electronic structure changes, and enhanced superconductivity in yba2cu3o6.48
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title_auth	Optically induced lattice deformations, electronic structure changes, and enhanced superconductivity in YBa2Cu3O6.48
abstract	Resonant optical excitation of apical oxygen vibrational modes in the normal state of underdoped YBa2Cu3O6+x induces a transient state with optical properties similar to those of the equilibrium superconducting state. Amongst these, a divergent imaginary conductivity and a plasma edge are transiently observed in the photo-stimulated state. Femtosecond hard x-ray diffraction experiments have been used in the past to identify the transient crystal structure in this non-equilibrium state. Here, we start from these crystallographic features and theoretically predict the corresponding electronic rearrangements that accompany these structural deformations. Using density functional theory, we predict enhanced hole-doping of the CuO2 planes. The empty chain Cu dy2-z2 orbital is calculated to strongly reduce in energy, which would increase c-axis transport and potentially enhance the interlayer Josephson coupling as observed in the THz-frequency response. From these results, we calculate changes in the soft x-ray absorption spectra at the Cu L-edge. Femtosecond x-ray pulses from a free electron laser are used to probe changes in absorption at two photon energies along this spectrum and provide data consistent with these predictions.
abstractGer	Resonant optical excitation of apical oxygen vibrational modes in the normal state of underdoped YBa2Cu3O6+x induces a transient state with optical properties similar to those of the equilibrium superconducting state. Amongst these, a divergent imaginary conductivity and a plasma edge are transiently observed in the photo-stimulated state. Femtosecond hard x-ray diffraction experiments have been used in the past to identify the transient crystal structure in this non-equilibrium state. Here, we start from these crystallographic features and theoretically predict the corresponding electronic rearrangements that accompany these structural deformations. Using density functional theory, we predict enhanced hole-doping of the CuO2 planes. The empty chain Cu dy2-z2 orbital is calculated to strongly reduce in energy, which would increase c-axis transport and potentially enhance the interlayer Josephson coupling as observed in the THz-frequency response. From these results, we calculate changes in the soft x-ray absorption spectra at the Cu L-edge. Femtosecond x-ray pulses from a free electron laser are used to probe changes in absorption at two photon energies along this spectrum and provide data consistent with these predictions.
abstract_unstemmed	Resonant optical excitation of apical oxygen vibrational modes in the normal state of underdoped YBa2Cu3O6+x induces a transient state with optical properties similar to those of the equilibrium superconducting state. Amongst these, a divergent imaginary conductivity and a plasma edge are transiently observed in the photo-stimulated state. Femtosecond hard x-ray diffraction experiments have been used in the past to identify the transient crystal structure in this non-equilibrium state. Here, we start from these crystallographic features and theoretically predict the corresponding electronic rearrangements that accompany these structural deformations. Using density functional theory, we predict enhanced hole-doping of the CuO2 planes. The empty chain Cu dy2-z2 orbital is calculated to strongly reduce in energy, which would increase c-axis transport and potentially enhance the interlayer Josephson coupling as observed in the THz-frequency response. From these results, we calculate changes in the soft x-ray absorption spectra at the Cu L-edge. Femtosecond x-ray pulses from a free electron laser are used to probe changes in absorption at two photon energies along this spectrum and provide data consistent with these predictions.
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title_short	Optically induced lattice deformations, electronic structure changes, and enhanced superconductivity in YBa2Cu3O6.48
url	https://doi.org/10.1063/1.4977672 https://doaj.org/article/0b1859c4ba1444bf9cfe29bc339e122e http://dx.doi.org/10.1063/1.4977672 https://doaj.org/toc/2329-7778
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up_date	2024-07-03T16:35:31.814Z
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Optically induced lattice deformations, electronic structure changes, and enhanced superconductivity in YBa2Cu3O6.48

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