Vertically stacking two-dimensional (2D) materials to form van der Waals homo- or hetero-structures has become an effective means for regulating their physical and mechanical properties. In particular, when a small twist angle is present at the stacked interface, the 2D structures often show many interesting and even magical physical phenomena owing to the unique interlayer coupling.
will undergo spontaneous atomic reconstruction due to the competition between the interlayer stacking energy and the intralayer elastic strain energy. This special stacked structure can lead to many unexpected phenomena, including Mott insulating state, unconventional superconductivity and spontaneous ferromagnetism., but can also be embedded inside the van der Waals structures, which may lead to richer physical behaviors.
Unfortunately, how to precisely characterize the embedded stacking structure is still a great challenge. In addition, whether the embedded twisted interfaces would also undergo atomic reconstruction and what impacts the reconstruction may have on the neighboring atomic layers as well as the whole stacked units are scientifically intriguing and remain unexplored.
A schematic of the experimental setup. Typical current images measured on samples with twisted interface embedded in different depths. Maps of the atomic deformation in individual graphene layers calculated by molecular calculations. Credit: Science China Press To answer these questions, Professor Qunyang Li's group at Tsinghua University and Professor Ouyang Wengen's group at Wuhan University have developed a new method based on conductive atomic force microscopy to characterize and reconstruct the internal stacking state of twisted layered material through simple surface conductivity measurements.
United States Latest News, United States Headlines
Similar News:You can also read news stories similar to this one that we have collected from other news sources.
Green Lantern’s Worst Enemy Sinestro Earns New Powers in the Perfect TwistSinestro gets the deadliest upgrade ever.
Read more »
Ahsoka's Lore-Breaking Twist Was Set Up By George Lucas In The Empire Strikes BackAhsoka's lore twist is in The Empire Strikes Back.
Read more »
MCU Phase 5's Bombshell Twist Totally Changed Endgame’s Final FightWhere were they?!
Read more »
MCU Phase 5’s Big Twist Turned Hulk's Avengers Origin Into A Plot HoleHulk's Phase 1 story has been made complicated.
Read more »
The Mandalorian Season 3 Set Up Ahsoka's Biggest Thrawn Twist (& Nobody Noticed)Moff Gideon spoke the truth of Thrawn.
Read more »
10 Wild Bond 26 Predictions That Would Beat Daniel Craig's 007 EraHow does Bond 26 follow on from that big twist?
Read more »