scholarly journals Rare-earth based half-Heusler topological quantum materials: A perspective

APL Materials ◽  
2020 ◽  
Vol 8 (6) ◽  
pp. 060903
Author(s):  
Ashutosh Kumar Singh ◽  
S. D. Ramarao ◽  
Sebastian C. Peter
Keyword(s):  
Rare Earth ◽  
Topological Quantum ◽  
Quantum Materials

scholarly journals Advances in Rare‐Earth Tritelluride Quantum Materials: Structure, Properties, and Synthesis

2021 ◽  
pp. 2004762
Author(s):  
Kentaro Yumigeta ◽  
Ying Qin ◽  
Han Li ◽  
Mark Blei ◽  
Yashika Attarde ◽  
...  
Keyword(s):  
Rare Earth ◽  
Quantum Materials ◽  
Structure Properties

Recent Advances in Topological Quantum Materials by Angle-Resolved Photoemission Spectroscopy

Matter ◽  
2020 ◽  
Vol 3 (4) ◽  
pp. 1114-1141
Author(s):  
Yujie Chen ◽  
Xu Gu ◽  
Yiwei Li ◽  
Xian Du ◽  
Lexian Yang ◽  
...  
Keyword(s):  
Photoemission Spectroscopy ◽  
Angle Resolved Photoemission Spectroscopy ◽  
Recent Advances ◽  
Topological Quantum ◽  
Quantum Materials

Angle-Resolved Photoemission Spectroscopy Study of Topological Quantum Materials

2020 ◽  
Vol 50 (1) ◽  
pp. 131-153
Author(s):  
Chaofan Zhang ◽  
Yiwei Li ◽  
Ding Pei ◽  
Zhongkai Liu ◽  
Yulin Chen
Keyword(s):  
Electronic Structures ◽  
Photoemission Spectroscopy ◽  
Topological Invariants ◽  
New Materials ◽  
Angle Resolved Photoemission Spectroscopy ◽  
Topological Quantum ◽  
Experimental Tool ◽  
Weyl Semimetals ◽  
Quantum Materials ◽  
Physical Phenomena

The recently discovered topological quantum materials (TQMs) have electronic structures that can be characterized by certain topological invariants. In these novel materials, the unusual bulk and surface electrons not only give rise to many exotic physical phenomena but also foster potential new technological applications. To characterize the unusual electronic structures of these new materials, investigators have used angle-resolved photoemission spectroscopy (ARPES) as an effective experimental tool to directly visualize the unique bulk and surface electronic structures of TQMs. In this review, we first give a brief introduction of TQMs and ARPES, which is followed by examples of the application of ARPES to different TQMs ranging from topological insulators to Dirac and Weyl semimetals. We conclude with a brief perspective of the current development of ARPES and its potential application in the study of TQMs.

A topological semimetal Li2CrN2 sheet as a promising hydrogen storage material

Nanoscale ◽  
2020 ◽  
Vol 12 (22) ◽  
pp. 12106-12113
Author(s):  
Li-Juan Ma ◽  
Qiang Sun
Keyword(s):  
Hydrogen Storage ◽  
Hydrogen Storage Material ◽  
Storage Material ◽  
Storage Performance ◽  
Topological Quantum ◽  
Topological Semimetal ◽  
Quantum Materials ◽  
Hydrogen Storage Performance ◽  
First Time

The hydrogen storage performance of topological quantum materials is explored for the first time.

scholarly journals Electrically and magnetically switchable nonlinear photocurrent in РТ-symmetric magnetic topological quantum materials

2020 ◽  
Vol 6 (1) ◽  
Author(s):  
Hua Wang ◽  
Xiaofeng Qian
Keyword(s):  
Electric Field ◽  
External Electric Field ◽  
Time Reversal ◽  
Magnetic Transition ◽  
Microscopic Theory ◽  
Zeeman Splitting ◽  
Magnetic Structures ◽  
Topological Quantum ◽  
Frequency Regime ◽  
Quantum Materials

AbstractNonlinear photocurrent in time-reversal invariant noncentrosymmetric systems such as ferroelectric semimetals sparked tremendous interest of utilizing nonlinear optics to characterize condensed matter with exotic phases. Here we provide a microscopic theory of two types of second-order nonlinear direct photocurrents, magnetic shift photocurrent (MSC) and magnetic injection photocurrent (MIC), as the counterparts of normal shift current (NSC) and normal injection current (NIC) in time-reversal symmetry and inversion symmetry broken systems. We show that MSC is mainly governed by shift vector and interband Berry curvature, and MIC is dominated by absorption strength and asymmetry of the group velocity difference at time-reversed ±k points. Taking $${\cal{P}}{\cal{T}}$$ P T -symmetric magnetic topological quantum material bilayer antiferromagnetic (AFM) MnBi2Te4 as an example, we predict the presence of large MIC in the terahertz (THz) frequency regime which can be switched between two AFM states with time-reversed spin orderings upon magnetic transition. In addition, external electric field breaks $${\cal{P}}{\cal{T}}$$ P T symmetry and enables large NSC response in bilayer AFM MnBi2Te4, which can be switched by external electric field. Remarkably, both MIC and NSC are highly tunable under varying electric field due to the field-induced large Rashba and Zeeman splitting, resulting in large nonlinear photocurrent response down to a few THz regime, suggesting bilayer AFM-z MnBi2Te4 as a tunable platform with rich THz and magneto-optoelectronic applications. Our results reveal that nonlinear photocurrent responses governed by NSC, NIC, MSC, and MIC provide a powerful tool for deciphering magnetic structures and interactions which could be particularly fruitful for probing and understanding magnetic topological quantum materials.

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