,Topology of triple-point metals

来源 :中国物理B(英文版) | 被引量 : 0次 | 上传用户:da330136324
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
We discuss and illustrate the appearance of topological fermions and bosons in triple-point metals where a band crossing of three electronic bands occurs close to the Fermi level. Topological bosons appear in the phonon spectrum of certain triple-point metals, depending on the mass of atoms that form the binary triple-point metal. We first provide a classification of possible triple-point electronic topological phases possible in crystalline compounds and discuss the consequences of these topological phases, seen in Fermi arcs, topological Lifshitz transitions, and transport anomalies. Then we show how the topological phase of phonon modes can be extracted and proven for relevant compounds. Finally, we show how the interplay of electronic and phononic topologies in triple-point metals puts these metallic materials into the list of the most efficient metallic thermoelectrics known to date.
其他文献
THz time-domain spectroscopy (THz-TDS) is used to study the THz-optical properties of a single crystal bismuth ferrite BiFeO3 (BFO).It can be found that the ani
本研究一方面用秋水仙素浸种、滴苗和涂抹对二倍体西瓜进行处理,将二倍体诱导为四倍体。另一方面用4个生态型的4个四倍体自交系西瓜作母本和同一生态型的4个二倍体自交系西瓜
ZnSe as a surface passivation layer in quantum dot-sensitized solar cells plays an important role in preventing charge recombination and thus improves the power
Since the 1980s, Nd–Fe–B with largest energy product (BH )max approaching the theoretical limit has become the landmark of permanent magnetic material. The ap
We propose a vectorial optical field generation system based on two-dimensional blazed grating to high-efficiently generate structured optical fields with presc
1921年,Max Braun先生在德国法兰克福创立博朗电器。几十年间,德国博朗凭借其对于品质近乎苛刻的执着追求,对每一个细节的关注、天才的创意和人性化的设计,成为拥有10大类200
Compact atomic gravimeters are the potential next generation precision instruments for gravity survey from fundamental research to broad field applications.We r
The effects of buried oxide (BOX) layer on the capacitance of SiGe heterojunction photo-transistor (HPT), including the collector–substrate capacitance, the ba
Based on the generalized coupled nonlinear Schr?dinger equation, we obtain the analytic four-bright–bright soliton solution by using the Hirota bilinear method
本研究以我国不同生态类型61份花椰菜为材料,研究了18个田间形态性状,并在上述研究的基础上,对61份材料进行RAPD分析,从分子水平分析它们之间的亲缘关系,进而为花椰菜育种和遗传改