2019 CAP Congress / Congrès de l'ACP 2019

Session

M1-11 Probing and controlling matter with light I (DCMMP) | Sonder et contrôler la matière avec de la lumière I (DPMCM)

M1-11

3 Jun 2019, 10:45

Simon Fraser University

Conveners

M1-11 Probing and controlling matter with light I (DCMMP) | Sonder et contrôler la matière avec de la lumière I (DPMCM)

• Ziliang Ye (University of British Columbia)

2758. Atomic-scale dynamics of collective charge and spin excitations

Sebastian Loth (Institute for Functional Matter and Quantum Technologies, University of Stuttgart and Max Planck Institute for Solid State Research, Stuttgart)

03/06/2019, 10:45

Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

Invited Speaker / Conférencier(ère) invité(e)

Spin and charge correlations are particularly pronounced in low-dimensional materials and enable new technologies that harness quantum behavior. Accessing these correlations on their intrinsic length and time scales is an important step towards a microscopic understanding of correlated-electron physics.
We combine scanning tunneling microscopy with pump probe schemes to achieve ultrafast...

2638. Photoinduced gap renormalization and many-body recombination in insulating cuprates

Derek G. Sahota (Simon Fraser University), J. Steven Dodge (Simon Fraser University)

03/06/2019, 11:15

Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

Oral (Non-Student) / Orale (non-étudiant(e))

We study the pump-probe response of three insulating cuprates as a function of both pump and probe photon energies, time, and fluence. The fluence dependence follows a simple and universal analytical form that includes a characteristic volume scale, which we associate with the effective interaction volume for a photoexcitation. This characteristic size varies strongly with pump photon energy,...

2570. Terahertz conductivity measurements of MnSi

Laleh Mohtashemi (Simon Fraser University)

03/06/2019, 11:30

Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

Oral not-in-competition (Graduate Student) / Orale non-compétitive (Étudiant(e) du 2e ou 3e cycle)

We will present time-domain terahertz spectroscopy measurements of the optical conductivity of MnSi thin films. Measurements cover a temperature range T = 5−300 K and a frequency range ν = 0.1−4 THz. We find that at low temperatures and frequencies, the scattering rate is proportional to both the square of the temperature and the square of the frequency, as predicted Fermi liquid theory. As...

2764. Influence of Rashba effect on carrier kinetics in hybrid perovskites

Kimberley Hall (Dalhousie University)

03/06/2019, 11:45

Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

Invited Speaker / Conférencier(ère) invité(e)

Owing to their large spin-orbit coupling [1], the lead halide hybrid perovskites are of interest for applications in semiconductor spintronics and spin-optoelectronics. While the photophysical properties of these materials have been studied extensively in recent years due to their potential for solution-processed, high-efficiency photovoltaic applications [2], much less is known about their...