Dirac semimetal in type IV magnetic space group

Gang Xu; Guiyuan Hua; Kailun Yao; Rui Yu; Simin Nie; Zhida Song

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Dirac semimetal in type IV magnetic space group

Guiyuan Hua, Simin Nie, Zhida Song, Rui Yu, Gang Xu, Kailun Yao

Materials Science · Submitted 9 Jan 2018

abstract compiled · 2026-09-23 · no language-model review

The authors' main claim Our results extend the range of DSM, and open a new way to study the interplay between the DSM and other exotic topological states.

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arXiv ID1801.02806 (version 2)

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CitationGang Xu, Guiyuan Hua, Kailun Yao, Rui Yu, Simin Nie, Zhida Song. "Dirac semimetal in type IV magnetic space group." arXiv:1801.02806 (2018). https://pith.science/paper/P5IFVO5W

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Compiled by classifier-1.13.0 via TypeSafe API, question bank abstract-p1-20260923, 2026-09-23: 1 request, 4,475 input tokens.

What the abstract itself states, as probabilities: claims first 0.11 · states limitation 0.08 · human participants 0.01 · controlled comparison 0.02 · randomized assignment 0.01 · states quantitative result 0.79 · compares with prior results 0.23 · mentions code or data availability 0.02.

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Analogues of the elementary particles, Dirac fermions in condensed matter have received extensive attention for both scientific interest and device applications. In this work, we generalize the concept of Dirac semimetal (DSM) to the magnetic space groups (MSGs), and define a new category of DSM in type IV MSGs, which is protected by the antiunitarity of the product of the inversion symmetry and the nonsymmophic time-reversal symmetry. Moreover, we propose the interlayer antiferromagnetic (AFM) EuCd2As2 as a promising candidate with only one pair of Dirac points at the Fermi level. Many exotic topological states, such as the triple point semimetal and the AFM topological insulator holding of the half-quantum Hall effect, can be derived from such AFM DSMs by breaking certain symmetry, providing an ideal platform to study topological phase transitions. Our results extend the range of DSM, and open a new way to study the interplay between the DSM and other exotic topological states.

background contribution method result interpretation main claim

What the classifier reports for each sentence. The number is the probability it gave the label.
#	sentence	role	the authors' own work	states the main conclusion	strength
s0	Analogues of the elementary particles, Dirac fermions in condensed matter have received extensive attention for both scientific interest and device applications.	background 1.00	0.03	0.02	asserted 1.00
s1	In this work, we generalize the concept of Dirac semimetal (DSM) to the magnetic space groups (MSGs), and define a new category of DSM in type IV MSGs, which is protected by the antiunitarity of the product of the inversion symmetry and the nonsymmophic time-reversal symmetry.	contribution 1.00	0.94	0.38	asserted 1.00
s2	Moreover, we propose the interlayer antiferromagnetic (AFM) EuCd2As2 as a promising candidate with only one pair of Dirac points at the Fermi level.	contribution 0.79	0.74	0.22	hedged possibility 0.87
s3	Many exotic topological states, such as the triple point semimetal and the AFM topological insulator holding of the half-quantum Hall effect, can be derived from such AFM DSMs by breaking certain symmetry, providing an ideal platform to study topological phase transitions.	interpretation 0.94	0.60	0.14	asserted 0.71
s4	Our results extend the range of DSM, and open a new way to study the interplay between the DSM and other exotic topological states.	interpretation 0.94	0.79	0.64	asserted 0.99

What kind of paper the classifier reports this is: theoretical result 0.99 · evidence from proof or derivation 0.53.

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Every quoted sentence on this record is the authors'. Every label is from Pith's closed vocabulary, with the probability shown beside it. Every number in the measurements table is the authors', checked by code. Record as JSON

The paper

Original abstract

Analogues of the elementary particles, Dirac fermions in condensed matter have received extensive attention for both scientific interest and device applications. In this work, we generalize the concept of Dirac semimetal (DSM) to the magnetic space groups (MSGs), and define a new category of DSM in type IV MSGs, which is protected by the antiunitarity of the product of the inversion symmetry and the nonsymmophic time-reversal symmetry. Moreover, we propose the interlayer antiferromagnetic (AFM) EuCd2As2 as a promising candidate with only one pair of Dirac points at the Fermi level. Many exotic topological states, such as the triple point semimetal and the AFM topological insulator holding of the half-quantum Hall effect, can be derived from such AFM DSMs by breaking certain symmetry, providing an ideal platform to study topological phase transitions. Our results extend the range of DSM, and open a new way to study the interplay between the DSM and other exotic topological states.

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5 arXiv papers cite this in 8 sentences

Each citing sentence is taken from the citing paper's LaTeX source and typed by Pith's classifier. A label appears at probability 0.8 or more (0.95 for support), a contest at 0.7 or more; the quoted words are the citing authors'. How each label was checked · JSON

Papers citing it · 5 sentences without a confident label

Compares with it 2 papers

The authors do investigate the A-type antiferromagnetic structure with moments aligned parallel to the $c$ axis, Fig. [ref] (d), and for this case the calculated band dispersion in Ref. [ref] is consistent with our results shown in Figs. [ref] (e)–(f).

Coupling of magnetic order and charge transport in the candidate Dirac semimetal EuCd$_2$As$_2$ · VII. Conclusions · 0.98
Finally, it is also interesting to compare the physical properties of EuCd$_2$Sb$_2$ with those of EuCd$_2$As$_2$ [ref] and EuZn$_2$Sb$_2$ [ref] , which are isostructural and also exhibit Eu antiferromagnetic order with similar magnetic ordering temperatures: $9.5$ K in EuCd$_2$As$_2$ and $13.3$ K in EuZn$_2$Sb$_2$.

Magnetic and electronic structure of the layered rare-earth pnictide EuCd$_2$Sb$_2$ · DFT Calculations · 0.91

Cites it as background 1 paper

Recently, topological phases have been significantly extended from gapped topological insulators [ref] , such as quantum spin Hall states [ref] , quantum anomalous Hall states [ref] , three-dimensional topological insulators [ref] and topological superconductors [ref] , to gapless topological semimetals, such as Weyl semimetals [ref] , Dirac semimetals [ref] , and nodal-line semimetals [ref] .

Engineering topological phases in the Luttinger semimetal $\alpha$-Sn · Introduction · 0.97

What it cites · 1 sentence without a confident label

Cites as background 1 paper

While their existence remains elusive in particle physics, the realization of DFs in the DSMs [ref] has received extensive attention for both scientific interest and device applications [ref] .

Structure and Topology of Band Structures in the 1651 Magnetic Space Groups · Introduction · 0.90

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