Apr 23, 2024 · In this work, we study the FeSe/SrTiO 3 interface by using scanning transmission electron microscopy-electron energy loss spectroscopy (STEM-EELS).

Oct 30, 2024 · Here we use momentum-selective high-resolution electron energy loss spectroscopy to atomically resolve the phonons at the FeSe/STO interface. We uncover new optical phonon modes, coupling...

Mar 16, 2018 · We present the results of a coordinated study of electrical transport, low temperature electron energy-loss spectroscopy (EELS), and high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) measurements on FeSe/STO films of different thicknesses.

Jul 28, 2021 · In this work, we conduct angle-resolved photoemission spectroscopy measurements on monolayer FeSe/SrTiO 3 using linearly polarized photons. This configuration enables unambiguous...

HAADF-STEM imaging together with EELS mapping across the FeSe/STO interface shows direct evidence of electrons transferred from STO to the FeSe layer. The transferred electrons were found to accumulate within the first two atomic layers of the FeSe films near the STO substrate.

We present the results of a coordinated study of electrical transport, low temperature electron energy-loss spectroscopy (EELS), and high-Angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) measurements on FeSe/STO films of different thicknesses.

Jan 13, 2017 · Our EELS mapping across the FeSe/STO interface shows direct evidence of band-bending caused by electrons transferred from STO to FeSe layer. The transferred electrons were found to accumulate only within the first two atomic layers of FeSe films near the STO substrate.

Jul 24, 2024 · Vibrational electron energy-loss spectroscopy (EELS) in a monochromated STEM [3] may provide new insight to the longstanding problem, as direct measurement of phonons near the 1uc FeSe/STO interface is not available by most techniques.

We characterize the phonon dynamics and interfacial charge transfer in FeTe-capped monolayer (ML) and few-layer FeSe films on SrTiO3 using low-temperature gated Raman spectroscopy and electron energy loss spectroscopy (EELS).

In this work, we study FeSe/SrTiO3 interface by using scanning transmission electron microscopy-electron energy loss spectroscopy (STEM-EELS). The cutting-edge developments in STEM-EELS have made it possible to directly image phonon excitations at the nanoscale credit to its high spatial and energy resolution24–28, which is very suitable for ...