One-dimensional charge-density Moire controls superconducting properties of 4Hb-TaS2


  Itai Silber  ,  Mathimalar Subramanian  ,  Eran Sela  ,  Amit Kanigel  ,  Haim Beidenkopf  ,  Yoram Dagan  
School of Physics and Astronomy, Tel - Aviv University
Department of Condensed Matter Physics, Weizmann Institute of Science
Physics Department, Technion-Israel Institute of Technology

New periodic structures created by Moire patterns can result in a dramatic decrease of the Brillouin zone that alters the electronic proprietors. Emergent electronic flat bands result in a plethora of fascinating phenomena, including superconductivity in stacked graphene and transition metal dichalcogenides. However, a modification of macroscopic transport properties in a Moire pattern is yet to be observed. Here we show that a one dimensional (1D) Moire pattern observed in a scanning tunneling microscope is accountable for a significant variation of the superconducting critical magnetic field of  4Hb-TaS2. Such a global control of transport properties can be utilized in carefully designed Van der Waals heterostructures. Moreover, our results can pave a wave for the understanding of other superconductors with charge ordering, such as cuprates, iron based superconductors, transition metal dichalcogenides and kagome metals.