Light-induced renormalization of the band structure of chiral tellurium

被引：0

作者：

Gatti, G. ^{[1
]}

Tancogne-Dejean, N. ^{[2
,3
]}

Huebener, H. ^{[2
,3
]}

De Giovannini, U. ^{[2
,3
,4
]}

Dai, J. ^{[5
,6
,7
]}

Polishchuk, S. ^{[6
,8
]}

Bugnon, Ph. ^{[5
]}

Frassetto, F. ^{[9
]}

Poletto, L. ^{[9
]}

Chergui, M. ^{[6
,8
]}

Grioni, M. ^{[5
,6
]}

Rubio, A. ^{[1
,2
,3
,10
,11
]}

Puppin, M. ^{[6
,8
]}

Crepaldi, A. ^{[1
,12
]}

机构：

[1] Univ Geneva, Dept Quantum Matter Phys, CH-1211 Geneva, Switzerland

[2] Max Planck Inst Struct & Dynam Matter, Luruper Chaussee 149, D-22761 Hamburg, Germany

[3] Ctr Free Electron Laser Sci, Luruper Chaussee 149, D-22761 Hamburg, Germany

[4] Univ Palermo, Dipartimento Fis & Chim, Via Archirafi 36, I-90123 Palermo, Italy

[5] Ecole Polytech Fed Lausanne EPFL, Inst Phys, CH-1015 Lausanne, Switzerland

[6] Ecole Polytech Fed Lausanne EPFL, Lausanne Ctr Ultrafast Sci LACUS, CH-1015 Lausanne, Switzerland

[7] Alba Synchrotron Light Source, Barcelona 08290, Spain

[8] Ecole Polytech Fed Lausanne EPFL, ISIC, Lab Ultrafast Spect, CH-1015 Lausanne, Switzerland

[9] Natl Res Council Italy Inst Photon & Nanotechnol C, Via Trasea 7, I-35131 Padua, Italy

[10] Univ Basque Country, Dept Fis Mat, Nanobio Spect Grp, San Sebastian 20018, Spain

[11] Flatiron Inst, Ctr Computat Quantum Phys CCQ, 162 Fifth Ave, New York, NY 10010 USA

[12] Politecn Milan, Dipartimento Fis, Piazza Leonardo da Vinci 32, I-20133 Milan, Italy

来源：

PHYSICAL REVIEW MATERIALS | 2024年 / 8卷 / 12期

基金：

欧盟地平线“2020”; 瑞士国家科学基金会; 欧洲研究理事会;

关键词：

COHERENT-PHONON OSCILLATIONS; OPTICAL-PROPERTIES; DYNAMICS; SPACE; ABSORPTION; PRESSURE; PHASE; SE;

D O I：

10.1103/PhysRevMaterials.8.125001

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Chirality in tellurium arises from a Peierls distortion driven by strong electron-phonon coupling, making this material a unique candidate for observing a light-induced topological phase transition. Using time- and angle- resolved photoelectron spectroscopy (trARPES), we reveal that, upon near-infrared photoexcitation, the Peierls gap is modulated by displacively excited coherent phonons with A 1g symmetry as well as chiral-symmetry- breaking ELO ' modes. By comparison with state-of-the-art TDDFT + U calculations, we reveal the microscopic origin of the in-phase oscillations of band edges, owing to phonon-induced modulation of the effective Hubbard U term.

引用

页数：6

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