Publications by authors named "Patrick Herlinger"
The successful assembly of heterostructures consisting of several layers of different 2D materials in arbitrary order by exploiting van der Waals forces has truly been a game changer in the field of low-dimensional physics. For instance, the encapsulation of graphene or MoS between atomically flat hexagonal boron nitride (hBN) layers with strong affinity and graphitic gates that screen charge impurity disorder provided access to a plethora of interesting physical phenomena by drastically boosting the device quality. The encapsulation is accompanied by a self-cleansing effect at the interfaces.
View Article and Find Full Text PDFNewly discovered van der Waals materials like MoS, WSe, hexagonal boron nitride (h-BN), and recently CN have sparked intensive research to unveil the quantum behavior associated with their 2D structure. Of great interest are 2D materials that host single quantum emitters. h-BN, with a band gap of 5.
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- van Hove singularities (VHS's) are crucial for understanding the electronic and thermodynamic properties of crystalline solids, particularly during critical points where Fermi surface connectivity and topological properties change.
- The research focuses on twisted bilayer graphene, where the ability to adjust the angle between graphene layers allows for precise exploration of VHS's effects through voltage manipulation.
- The study reveals a topological phase transition, marked by an abrupt shift from electron to hole behavior, a change in Berry phase, and unique patterns of integer quantum Hall states around the VHS.