Publications highlights

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...

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...

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...

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...

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 ...

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...

Phys. Rev. Lett. 119, 237001 (2017)

Detailed scanning tunneling microsccopy and spectroscopy and original model calculations reveal the long sought after electronic signature of the vortex cores in a high temperature copper oxyde d-wave...

2D Materials 4, 041005 (2017)

Scanning tunneling microscopy of in-situ exfoliated VSe₂ reveals a non monotonic thickness dependence of the charge density wave (CDW) order parameter and phase transition temperature. Both...

Phys. Rev. B 96, 075304

Reduced dimensions can give rise to surprising effects. While a long exposure time photograph of a macroscopic moving object appears blurred, scanning tunneling microscopy images of flipping Si dimer defects...

Phys. Rev. Lett. 118, 017002

Combining scanning tunneling microscopy (STM) and density functional theory, we unambiguously identify Cu intercalated on the octahedral site in the van der Waals gap of 1T-Cu_xTiSe₂. STM ...

Nat. Commun. 7, 11139 (2016)

Scanning tunnelling spectroscopy on very homogeneous Y123 at 0.4K lift the veil on the vortex core spectroscopy. We find that the subgap features which have been challenging theoretical modelling for over...

Phys. Rev. Lett. 115, 256104

Combining scanning tunneling microscopy, atomic force microscopy, and density functional theory we find that a simple necklacelike chain of single Mn atoms reproduces all the prominent features of Mn atom...

Phys. Rev. B 92, 081101(R)

The charge density wave (CDW) in 1T-TiSe₂ is imaged by scanning tunneling microscopy in the presence of single atom defects. The detailed identification of the defects by means of density...

Phys. Rev. Lett. 112, 197001 (2014)

The structural and doping nature of native atomic defects in TiSe2 are identified and characterized using scanning tunneling microscopy or spectroscopy and ab initio calculations. The dominant single atom...

Phys. Rev. B 88, 035440 (2013)

In this study, we find that isolated heavy dopants behave entirely different at the surface compared to the bulk and to lighter dopants. The common light impurity P replaces individual Si atoms and maintains...

ACS Nano 2013, 7, 5, 4422–442

Hydrogen dangling bonds are highly reactive and their selective exposure on hydrogenated Si(001) using scanning probes is developing as a powerful lithography to pattern molecules and atoms. We have found...

Phys. Rev. Lett. 108, 256801 (2012)

Measuring the piezoresistance in p-type silicon up to 3GPa, we found it to decrease with compressive stress beyond the predicted saturation. This result has potential implications for the Si technology...

Nature Communications. 2011, vol. 2, 558

One dimensional charge density wave discovered by scanning tunneling microscopy in CaC₆, a superconducting graphite intercalate compound.

Phys. Rev. B 84, 035328 (2011)

A one dimensional electronic state has been uncovered along the core of a self assembled endotaxial Si nanoline at the Si(001):H surface, with a range of promising properties to explore 1D physics.

Nature Communications. 2011, vol. 2, 212

The oxygen migration scenario for electroresistive switching in manganites gets new support. Mobile oxygen adatoms and defects have been observed by scanning tunneling microscopy with atomic resolution at the ...

Phys. Rev. Lett. 105, 226802 (2010)

Migrating surface charges can simulate the giant piezoresistance observed in silicon nano- and micro-structures. See also comments in APS Physics Synopsis, Nature Materials Research Highlight and Physics...

Nature Materials 8, 245–247 (2009)

The PhysiScope draws the attention of Nature Materials.

Phys. Rev. Lett. 100, 145501 (2008)

Giant piezoresistance observed in a metal silicon hybrid structure. Article was featured in AIP Physics News Update.