For the first time in the quasi-two-dimensional material α-RuCl 3 , scientists in the United States and the United States observed a new quantum state of matter, the “cleft trace†of quantum spin liquids. Researchers said that the latest research may contribute to the development of quantum computers.
New research contributes to the development of quantum computers
Quantum spin liquid is a mysterious quantum material form proposed by physicist Phil Anderson in 1973. Scientists believe that it is hidden in certain magnetic materials but has not been observed in nature. Professor Qian Dong of the Department of Physics and Astronomy at Shanghai Jiaotong University explained that in a two-dimensional quantum spin liquid, electrons can be equivalently "split" into other quasi-particles, one of which is known as the Maiorana Fermions. Or can promote the development of quantum computers.
In the latest study, the team led by Albi Bernanke and Stephen Nagler of the Oak Ridge National Laboratory in the United States used neutron scattering technology and found it in α-strontium chloride having a graphite-like structure. Experimental evidence of possible existence of quantum spin liquids. Using neutrons to irradiate α-cesium chloride powder, they performed energy analysis on neutrons that penetrated from different angles in the sample and obtained specific corrugated patterns.
Physicists are well aware of the neutron scattering patterns of ordinary magnetic materials, but the scattering pattern containing Mayorana Fermions is unresolved. One of the research team members, Johannes Knoll of the Cambridge Cavendish Laboratory at Cambridge University and colleagues presented the theoretical results in 2014 that are in agreement with the latest experimental observations, thereby providing the existence of quantum spin liquids in the quasi-two-dimensional material. Important evidence.
According to Qian Dong, in 2012, Li Yang from the Massachusetts Institute of Technology used the neutron scattering technique to find some evidence of the existence of quantum spin liquids in the Herbert Smithite crystals. Confirmation, and the latest study for the first time found evidence of the existence of quantum spin liquids in quasi-two-dimensional materials containing heavy elements. Due to the complexity of quantum spin liquids, final 100% determination may require further theoretical and experimental studies. Dmitri Cevrisin of the Cavendish Laboratory said: "This new quantum state is an important step in our understanding of quantum materials and offers us new possibilities."
The results of the study are published in the journal Nature and Materials.
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