Renner Group - Scanning probe microscopy and spectroscopy

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We are investigating low dimensional correlated electron materials and devices by scanning probe microscopy and spectroscopy.

Current scientific projects include: Understanding the interplay between ordered electronic phases and superconductivity; Thickness and strain dependent electronic properties in layered superconducting and charge density wave systems; Tuning electronic properties by means of space charge doping; Spectroscopy of artificial 2D devices.

Current projects

The prime experimental techniques we use are scanning tunneling microscopy (STM) and spectroscopy (STS) in combination with atomic force microscopy (AFM).

Latest news

Job opening

October 5, 2023

STM-derived authentication engraving

Spin-orbit coupling in graphene

Vincent’s PhD Degree

December 16, 2022

Best Poster Prize for Tejas

Innovative cutting tools for high-tech alloys

Group life

Follow our laboratory life, events, group outings and much more.

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Publications Highlights

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Determining spin-orbit coupling in graphene by quasiparticle interference imaging

Nature Communications 14 1, 3771 (2023)

We deploy quasi-particle interference imaging using a scanning tunneling microscope to probe the presence, nature and strength of proximity induced spin-orbit coupling (SOC) in single layer graphene (SLG) on…

Multiband charge density wave exposed in a transition metal dichalcogenide

Nature Communications 12, 6037 (2021)

In the presence of multiple bands, well-known electronic instabilities may acquire new complexity. While multiband superconductivity is the subject of extensive studies, the possibility of multiband charge…

Wang-MacDonald d-wave vortex cores observed in heavily overdoped Bi2Sr2CaCu2O8+δ

Phys. Rev. X 11, 031040 (2021)

The electronic structure of the vortex cores in copper oxide high temperature superconductors (HTS) is a long-standing puzzle. Using scanning tunneling spectroscopy at an unprecedented low magnetic field for…

Insight into the Charge Density Wave Gap from Contrast Inversion in Topographic STM Images

Phys. Rev. Lett. 125, 267603 (2020)

We present a first detailed study of the charge density wave (CDW) contrast inversion in scanning tunneling microscopy (STM) images. Combining high resolution STM imaging at different tunneling biases and…

Holographic imaging of the complex charge density wave order parameter

Phys. Rev. Research 1, 033114 (2019)

Combining real space and reciprocal space analysis of scanning tunneling microscopy images of transition metal dichalcogenides, we obtain real space maps of the amplitude, phase and periodicity of the complex …

Energy-dependent spatial texturing of charge order in 1T-CuxTiSe2

Phys. Rev. B 99, 155133 (2019)

Scanning tunneling microscopy unveils an unusual energy dependent CDW pattern in Cu intercalated TiSe₂. It is a direct manifestation of a large doping dependent CDW gap opening below the Fermi…

Jobs

PhD and Postdoc positions in scanning probe studies of correlated 2D electron materials

The group of Pr Christoph Renner is inviting applications for several talented and highly motivated PhD and Postdoctoral students to investigate correlated 2D electron materials as a function of thickness, strain and doping using scanning tunneling microscopy and spectroscopy.