Emerging ultrafast techniques for studying quantum materials

A Zong, BR Nebgen, SC Lin, JA Spies… - Nature Reviews …, 2023 - nature.com
In quantum materials, emergent functional properties resulting from strong correlations or
electronic topology offer opportunities for new applications. Over the past decade, ultrafast …

Ultrafast dynamics of electrons and phonons: from the two-temperature model to the time-dependent Boltzmann equation

F Caruso, D Novko - Advances in Physics: X, 2022 - Taylor & Francis
The advent of pump-probe spectroscopy techniques paved the way to the exploration of
ultrafast dynamics of electrons and phonons in crystalline solids. Following photo-absorption …

Correlated electron–nuclear dynamics of photoinduced water dissociation on rutile TiO2

P You, D Chen, X Liu, C Zhang, A Selloni, S Meng - Nature Materials, 2024 - nature.com
Elucidating the mechanism of photoinduced water splitting on TiO2 is important for
advancing the understanding of photocatalysis and the ability to control photocatalytic …

Enhanced optical conductivity and many-body effects in strongly-driven photo-excited semi-metallic graphite

TPH Sidiropoulos, N Di Palo, DE Rivas… - Nature …, 2023 - nature.com
The excitation of quasi-particles near the extrema of the electronic band structure is a
gateway to electronic phase transitions in condensed matter. In a many-body system, quasi …

Attosecond core-level absorption spectroscopy reveals the electronic and nuclear dynamics of molecular ring opening

S Severino, KM Ziems, M Reduzzi, A Summers… - Nature …, 2024 - nature.com
We show that attosecond core-level spectroscopy is a powerful tool for investigating
molecular dynamics due to its combined attosecond temporal resolution and the broad …

Electronic and structural fingerprints of charge-density-wave excitations in extreme ultraviolet transient absorption spectroscopy

T Heinrich, HT Chang, S Zayko, K Rossnagel, M Sivis… - Physical Review X, 2023 - APS
Femtosecond core-level transient absorption spectroscopy is utilized to investigate
photoinduced dynamics of the charge density wave in 1 T-TiSe 2 at the Ti M 2, 3 edge (32 …

Realizing attosecond core-level X-ray spectroscopy for the investigation of condensed matter systems

AM Summers, S Severino, M Reduzzi… - Ultrafast …, 2023 - spj.science.org
Unraveling the exact nature of nonequilibrium and correlated interactions is paramount for
continued progress in many areas of condensed matter science. Such insight is a …

Optical waveform synthesis and its applications

G Cirmi, RE Mainz, MA Silva‐Toledo… - Laser & Photonics …, 2023 - Wiley Online Library
The quest for ever‐shorter optical pulses has been ongoing for over half a century. Although
few‐cycle pulses have been generated for nearly 40 years, pulse lengths below the single …

Light-field synthesizer based on multidimensional solitary states in hollow-core fibers

TC Truong, JE Beetar, M Chini - Optics Letters, 2023 - opg.optica.org
Few-cycle, long-wavelength sources for generating isolated attosecond soft x ray pulses
typically rely upon complex laser architectures. Here, we demonstrate a comparatively …

Ultrafast Nonadiabatic Phonon Renormalization in Photoexcited Single-Layer MoS2

N Girotto, F Caruso, D Novko - The Journal of Physical Chemistry …, 2023 - ACS Publications
Comprehending nonequilibrium electron–phonon dynamics at the microscopic level and at
short time scales is one of the main goals in condensed matter physics. Effective …