View in EDS HTML Full Text PDF Full Text

Local fields reveal atomic-scale nonadiabatic carrier-phonon dynamics.

Saved in:
Bibliographic Details
Title: Local fields reveal atomic-scale nonadiabatic carrier-phonon dynamics.
Authors: Neb, Sergej (AUTHOR), Shin, Dong-bin (AUTHOR), Burri, Florence (AUTHOR), Hollm, Marko (AUTHOR), de Vos, Erik W. (AUTHOR), Kuznetsov, Denis A. (AUTHOR), Müller, Christoph R. (AUTHOR), Fedorov, Alexey (AUTHOR), Sato, Shunsuke A. (AUTHOR), Rubio, Angel (AUTHOR), Gallmann, Lukas (AUTHOR), Keller, Ursula (AUTHOR)
Source: Science. 1/1/2026, Vol. 391 Issue 6780, p75-78. 4p.
Subjects: Electron-phonon interactions, Energy transfer, Transients (Dynamics), Titanium carbide, Time-resolved spectroscopy, Two-dimensional materials (Nanotechnology)
Abstract: Understanding nonadiabatic carrier-lattice interactions at the atomic scale remains a fundamental challenge, yet these processes govern energy transfer in materials and ultimately set limits in microelectronics. We combined attosecond core-level transient absorption spectroscopy with many-body theory to uncover how nonadiabatic electron-phonon coupling drives ultrafast relaxations in a titanium-carbide MXene. Phonon-driven changes in carrier localization modulated local field effects (LFEs), yielding carrier-, site-, and orbital-specific absorption signatures. LFEs served as sensitive fingerprints of electron-phonon coupling strength across the phonon spectrum and revealed a breakdown of the Born–Oppenheimer approximation: Electrons lagged lattice oscillations by 32 ± 8 femtoseconds, whereas holes responded almost instantaneously (7 ± 7 femtoseconds). Our results establish a framework for probing and controlling nonadiabatic carrier-phonon interactions with orbital and site specificity. Editor's summary: Heat dissipation is crucial in microelectronics, yet nonequilibrium thermalization processes in condensed matter, such as ultrafast highly nonequilibrium electron-phonon dynamics, are still not well understood at the atomic scale. Using attosecond transient absorption spectroscopy in combination with many-body theoretical modeling, Neb et al. resolved nonadiabatic, energy-dependent electronic responses to lattice motion with previously inaccessible orbital and site specificity in the prototypical two-dimensional material Ti3C2TX MXene. The presented approach revealed connections between ultrafast carrier localization dynamics and the strength of electron-phonon coupling, marking a major step toward achieving quantum-level control over energy dissipation in quantum materials and suggesting strategies for thermal management in electronics through crystallographic engineering or phonon mode tuning. —Yury Suleymanov [ABSTRACT FROM AUTHOR]
Copyright of Science is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
Full text is not displayed to guests.
FullText Links:
  – Type: pdflink
Text:
  Availability: 1
Header DbId: pbh
DbLabel: Psychology and Behavioral Sciences Collection
An: 190608209
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Local fields reveal atomic-scale nonadiabatic carrier-phonon dynamics.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Neb%2C+Sergej%22">Neb, Sergej</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Shin%2C+Dong-bin%22">Shin, Dong-bin</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Burri%2C+Florence%22">Burri, Florence</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hollm%2C+Marko%22">Hollm, Marko</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22de+Vos%2C+Erik+W%2E%22">de Vos, Erik W.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kuznetsov%2C+Denis+A%2E%22">Kuznetsov, Denis A.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Müller%2C+Christoph+R%2E%22">Müller, Christoph R.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Fedorov%2C+Alexey%22">Fedorov, Alexey</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Sato%2C+Shunsuke+A%2E%22">Sato, Shunsuke A.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Rubio%2C+Angel%22">Rubio, Angel</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Gallmann%2C+Lukas%22">Gallmann, Lukas</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Keller%2C+Ursula%22">Keller, Ursula</searchLink> (AUTHOR)
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Science%22">Science</searchLink>. 1/1/2026, Vol. 391 Issue 6780, p75-78. 4p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Electron-phonon+interactions%22">Electron-phonon interactions</searchLink><br /><searchLink fieldCode="DE" term="%22Energy+transfer%22">Energy transfer</searchLink><br /><searchLink fieldCode="DE" term="%22Transients+%28Dynamics%29%22">Transients (Dynamics)</searchLink><br /><searchLink fieldCode="DE" term="%22Titanium+carbide%22">Titanium carbide</searchLink><br /><searchLink fieldCode="DE" term="%22Time-resolved+spectroscopy%22">Time-resolved spectroscopy</searchLink><br /><searchLink fieldCode="DE" term="%22Two-dimensional+materials+%28Nanotechnology%29%22">Two-dimensional materials (Nanotechnology)</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Understanding nonadiabatic carrier-lattice interactions at the atomic scale remains a fundamental challenge, yet these processes govern energy transfer in materials and ultimately set limits in microelectronics. We combined attosecond core-level transient absorption spectroscopy with many-body theory to uncover how nonadiabatic electron-phonon coupling drives ultrafast relaxations in a titanium-carbide MXene. Phonon-driven changes in carrier localization modulated local field effects (LFEs), yielding carrier-, site-, and orbital-specific absorption signatures. LFEs served as sensitive fingerprints of electron-phonon coupling strength across the phonon spectrum and revealed a breakdown of the Born–Oppenheimer approximation: Electrons lagged lattice oscillations by 32 ± 8 femtoseconds, whereas holes responded almost instantaneously (7 ± 7 femtoseconds). Our results establish a framework for probing and controlling nonadiabatic carrier-phonon interactions with orbital and site specificity. Editor's summary: Heat dissipation is crucial in microelectronics, yet nonequilibrium thermalization processes in condensed matter, such as ultrafast highly nonequilibrium electron-phonon dynamics, are still not well understood at the atomic scale. Using attosecond transient absorption spectroscopy in combination with many-body theoretical modeling, Neb et al. resolved nonadiabatic, energy-dependent electronic responses to lattice motion with previously inaccessible orbital and site specificity in the prototypical two-dimensional material Ti3C2TX MXene. The presented approach revealed connections between ultrafast carrier localization dynamics and the strength of electron-phonon coupling, marking a major step toward achieving quantum-level control over energy dissipation in quantum materials and suggesting strategies for thermal management in electronics through crystallographic engineering or phonon mode tuning. —Yury Suleymanov [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Science is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=pbh&AN=190608209
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1126/science.aea1523
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 4
        StartPage: 75
    Subjects:
      – SubjectFull: Electron-phonon interactions
        Type: general
      – SubjectFull: Energy transfer
        Type: general
      – SubjectFull: Transients (Dynamics)
        Type: general
      – SubjectFull: Titanium carbide
        Type: general
      – SubjectFull: Time-resolved spectroscopy
        Type: general
      – SubjectFull: Two-dimensional materials (Nanotechnology)
        Type: general
    Titles:
      – TitleFull: Local fields reveal atomic-scale nonadiabatic carrier-phonon dynamics.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Neb, Sergej
      – PersonEntity:
          Name:
            NameFull: Shin, Dong-bin
      – PersonEntity:
          Name:
            NameFull: Burri, Florence
      – PersonEntity:
          Name:
            NameFull: Hollm, Marko
      – PersonEntity:
          Name:
            NameFull: de Vos, Erik W.
      – PersonEntity:
          Name:
            NameFull: Kuznetsov, Denis A.
      – PersonEntity:
          Name:
            NameFull: Müller, Christoph R.
      – PersonEntity:
          Name:
            NameFull: Fedorov, Alexey
      – PersonEntity:
          Name:
            NameFull: Sato, Shunsuke A.
      – PersonEntity:
          Name:
            NameFull: Rubio, Angel
      – PersonEntity:
          Name:
            NameFull: Gallmann, Lukas
      – PersonEntity:
          Name:
            NameFull: Keller, Ursula
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 01
              Text: 1/1/2026
              Type: published
              Y: 2026
          Identifiers:
            – Type: issn-print
              Value: 00368075
          Numbering:
            – Type: volume
              Value: 391
            – Type: issue
              Value: 6780
          Titles:
            – TitleFull: Science
              Type: main
ResultId 1