150 citations · 1.3k across the 37 of their papers we have counts for
41 papers
Competition between vacancy creation and filling in defect-engineering of hBN
Shrirang Chokappa, Manuel Längle, Barbara Maria Mayer +13
Hexagonal boron nitride (hBN) has recently become the focus of intense research as a material that can host quantum emitters. It is known that such emission is related to point def…
Single photon emitters in hBN: Limitations of atomic resolution imaging and potential sources of error
David Lamprecht, Shrirang Chokappa, Alissa M. Freilinger +9
There is a growing interest in identifying the origin of single-photon emission in hexagonal boron nitride (hBN), with proposed candidates including boron and nitrogen vacancies as…
Atomically clean free-standing two-dimensional materials through heating in ultra-high vacuum
Philipp Irschik, David Lamprecht, Shrirang Chokappa +6
Surface contamination not only influences but in some cases even dominates the measured properties of two-dimensional materials. Although different cleaning methods are often used…
Self-ion implantation and structural relaxation in amorphous silicon
J. M. Gibson, Robe Elliman, T. Susi +1
Self-ion implantation amorphization is an established approach to study the structure and properties of amorphous silicon (a-Si). Fluctuation Electron Microscopy (FEM) has consiste…
Origin of circular and triangular pores in electron-irradiated hexagonal boron nitride
Umair Javed, Manuel Langle, Vladimir Zobac +9
For nearly two decades, it has been known that electron irradiation of hexagonal boron nitride (hBN) in a transmission electron microscope leads to the formation of triangular pore…
Uncovering the atomic structure of substitutional platinum dopants in MoS with single-sideband ptychography
David Lamprecht, Anna Benzer, Manuel Längle +5
We substitute individual Pt atoms into monolayer MoS and study the resulting atomic structures with single-sideband (SSB) ptychography supported by ab initio simulations. We de…