The layered charge density wave system 1T-TaS2 hosts a series of interesting correlation-induced electronic phases, but the nature of its insulating state is still under debate. Here, theoretical calculations and microscopy measurements reveal the role of stacking and interlayer coupling in the formation of different bandgap types, addressing previous discrepancies.
- Jae Whan Park
- Jinwon Lee
- Han Woong Yeom