activity
20092026
most citedObservation of giant bandgap renormalization and excitonic effects in a monolayer transition metal dichalcogenide semiconductor

1.9k citations · 7.5k across the 37 of their papers we have counts for

collaborators

43 papers

cond-mat.str-el2026

Mapping Strain and Spatial-Modulation Phase from Local Wave Vectors in Scanning Tunneling Microscopy

Xinze Yang, Sandra Sajan, Maria N. Gastiasoro +2

Spatially varying lattice distortions can produce local changes in electronic properties that are obscured by measurements averaging over extended regions. With its atomic-scale sp…

cond-mat.str-el2026

Emergent Surface Kondo Flat Band Driven by Competing Interactions in a Topological Ferromagnet

Nazar Zaremba, Susmita Changdar, Haojie Guo +28

A central goal of modern condensed matter physics is to uncover new quantum states of matter arising from the intertwined effects of strong electron correlations, magnetism, and ba…

cond-mat.supr-con2026

Stacking-tuned superconductivity and competing charge-density-wave states in NbSe

Sandra Sajan, Xinze Yang, Haojie Guo +9

Layer stacking provides a powerful yet underexplored route for reshaping collective quantum order in van der Waals materials. Here we use high-resolution scanning tunneling microsc…

cond-mat.mtrl-sci2026

Engineering topological flat bands in -valley moiré systems with Ising-type SOC: twisted 1T-ZrS and 1T-SnSe

Hanqi Pi, Yves H. Kwan, Haoyu Hu +8

Twisted moiré superlattices hosting topological flat bands provide a platform to explore the interplay between topology and correlations. Here we investigate topological band struc…

cond-mat.str-el2026

Moiré-induced symmetry breaking of charge order in van der Waals heterostructures

Sandra Sajan, Laura Pätzold, Tarushi Agarwal +10

Layered materials that stack different lattice symmetries are rare in nature. Misfit layered chalcogenides, which combine square and hexagonal lattices of rocksalt monochalcogenide…

cond-mat.supr-con2025

Layer-selective Cooper pairing in an alternately stacked transition metal dichalcogenide

Haojie Guo, Sandra Sajan, Irián Sánchez-Ramírez +9

Multigap superconductivity emerges when superconducting gaps form on distinct Fermi surfaces. Arising from locally overlapping atomic orbitals, multiple superconducting bands intro…