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Real-time Observation of Phonon-Mediated $\sigma$-$\pi$ Interband Scattering in MgB2

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Edoardo Baldini, Andreas Mann, Lara Benfatto, Emmanuele Cappelluti, Angela Acocella, Vyacheslav M. Silkin, Sergey V. Eremeev, Alexey B. Kuzmenko
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Simone Borroni, Teng Tan, Xiaoxiang Xi, Francesco Zerbetto, Roberto Merlin, Fabrizio Carbone

Superconductivity · Submitted 17 Jan 2017

abstract compiled · 2026-09-23 · no language-model review

The authors' main claim Here we show that the population of E$_{2g}$ phonons in the multiband superconductor MgB$_2$ can be selectively enhanced by femtosecond laser pulses, leading to a transient control of the number of carriers in the {\sigma}-electronic subsystem.

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arXiv ID1701.04795 (version 1)
Pith ID7KDDPVFB, Pith's permanent record of this paper and its review
CitationAlexey B. Kuzmenko, Andreas Mann, Angela Acocella, Edoardo Baldini, Emmanuele Cappelluti, Fabrizio Carbone, Francesco Zerbetto, Lara Benfatto, Roberto Merlin, Sergey V. Eremeev, Simone Borroni, Teng Tan, Vyacheslav M. Silkin, Xiaoxiang Xi. "Real-time Observation of Phonon-Mediated $\sigma$-$\pi$ Interband Scattering in MgB2." arXiv:1701.04795 (2017). https://pith.science/paper/7KDDPVFB
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Compiled by classifier-1.13.0 via TypeSafe API, question bank abstract-p1-20260923, 2026-09-23: 1 request, 3,180 input tokens.

What the abstract itself states, as probabilities: claims first 0.05 · states limitation 0.05 · human participants 0.02 · controlled comparison 0.05 · randomized assignment 0.01 · states quantitative result 0.05 · compares with prior results 0.10 · mentions code or data availability 0.02.

The abstract, sentence by sentence

arXiv listing abstract v1. Results and the main claim are underlined; .

In systems having an anisotropic electronic structure, such as the layered materials graphite, graphene and cuprates, impulsive light excitation can coherently stimulate specific bosonic modes, with exotic consequences for the emergent electronic properties. Here we show that the population of E$_{2g}$ phonons in the multiband superconductor MgB$_2$ can be selectively enhanced by femtosecond laser pulses, leading to a transient control of the number of carriers in the {\sigma}-electronic subsystem. The nonequilibrium evolution of the material optical constants is followed in the spectral region sensitive to both the a- and c-axis plasma frequencies and modeled theoretically, revealing the details of the $\sigma$-$\pi$ interband scattering mechanism in MgB$_2$.

background contribution method result interpretation main claim

What the classifier reports for each sentence. The number is the probability it gave the label.
#sentencerolethe authors' own workstates the main conclusionstrength
s0 In systems having an anisotropic electronic structure, such as the layered materials graphite, graphene and cuprates, impulsive light excitation can coherently stimulate specific bosonic modes, with exotic consequences for the emergent electronic properties. background 1.00 0.04 0.03 asserted 0.89
s1 Here we show that the population of E$_{2g}$ phonons in the multiband superconductor MgB$_2$ can be selectively enhanced by femtosecond laser pulses, leading to a transient control of the number of carriers in the {\sigma}-electronic subsystem. result 0.58 0.97 0.75 asserted 1.00
s2 The nonequilibrium evolution of the material optical constants is followed in the spectral region sensitive to both the a- and c-axis plasma frequencies and modeled theoretically, revealing the details of the $\sigma$-$\pi$ interband scattering mechanism in MgB$_2$. method 0.43 0.95 0.32 asserted 1.00

What kind of paper the classifier reports this is: empirical study 1.00 · evidence from observation or experiment 1.00.

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Every quoted sentence on this record is the authors'. Every label is from Pith's closed vocabulary, with the probability shown beside it. Every number in the measurements table is the authors', checked by code. Record as JSON

The paper
Original abstract

In systems having an anisotropic electronic structure, such as the layered materials graphite, graphene and cuprates, impulsive light excitation can coherently stimulate specific bosonic modes, with exotic consequences for the emergent electronic properties. Here we show that the population of E$_{2g}$ phonons in the multiband superconductor MgB$_2$ can be selectively enhanced by femtosecond laser pulses, leading to a transient control of the number of carriers in the {\sigma}-electronic subsystem. The nonequilibrium evolution of the material optical constants is followed in the spectral region sensitive to both the a- and c-axis plasma frequencies and modeled theoretically, revealing the details of the $\sigma$-$\pi$ interband scattering mechanism in MgB$_2$.

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