TY - JOUR
T1 - Real Topological Phonons in 3D Carbon Allotropes
AU - Wang, Xiaotian
AU - Bai, Jingbo
AU - Wang, Jianhua
AU - Cheng, Zhenxiang
AU - Qian, Shifeng
AU - Wang, Wenhong
AU - Zhang, Gang
AU - Yu, Zhi Ming
AU - Yao, Yugui
N1 - Publisher Copyright:
© 2024 The Author(s). Advanced Materials published by Wiley-VCH GmbH.
PY - 2024/11/14
Y1 - 2024/11/14
N2 - There has been a significant focus on real topological systems that enjoy space-time inversion symmetry and lack spin-orbit coupling. While the theoretical classification of the real topology has been established, more progress has yet to be made in the materials realization of real topological phononic states in 3D. To address this crucial issue, high-throughput computing is performed to inspect the real topology in the phonon spectrums of the 3D carbon allotropes. Among 1661 carbon allotropes listed in the Samara Carbon Allotrope Database (SACADA), 79 candidates host a phononic real Chern insulating (PRCI) state, 2 candidates host a phononic real nodal line (PRNL) state, 12 candidates host a phononic real Dirac point (PRDP) state, and 10 candidates host a phononic real triple-point pair (PRTPP) state. The PRCI, PRNL, PRTPP, and PRDP states of 27-SG. 166-pcu-h, 1081-SG. 194-42T13-CA, 52-SG. 141-gis, and 132-SG. 191-3,4T157 are exhibited as illustrative examples, and the second-order phononic hinge modes are explored. This study broadens the understanding of 3D topological phonons and expands the material candidates with phononic hinge modes and phononic real topology.
AB - There has been a significant focus on real topological systems that enjoy space-time inversion symmetry and lack spin-orbit coupling. While the theoretical classification of the real topology has been established, more progress has yet to be made in the materials realization of real topological phononic states in 3D. To address this crucial issue, high-throughput computing is performed to inspect the real topology in the phonon spectrums of the 3D carbon allotropes. Among 1661 carbon allotropes listed in the Samara Carbon Allotrope Database (SACADA), 79 candidates host a phononic real Chern insulating (PRCI) state, 2 candidates host a phononic real nodal line (PRNL) state, 12 candidates host a phononic real Dirac point (PRDP) state, and 10 candidates host a phononic real triple-point pair (PRTPP) state. The PRCI, PRNL, PRTPP, and PRDP states of 27-SG. 166-pcu-h, 1081-SG. 194-42T13-CA, 52-SG. 141-gis, and 132-SG. 191-3,4T157 are exhibited as illustrative examples, and the second-order phononic hinge modes are explored. This study broadens the understanding of 3D topological phonons and expands the material candidates with phononic hinge modes and phononic real topology.
KW - 3D carbon allotropes
KW - phononic hinge modes
KW - phononic real chern insulators
KW - phononic real Dirac points
KW - phononic real nodal lines
KW - phononic real triple-point pair
KW - real topological phonons
UR - http://www.scopus.com/inward/record.url?scp=85204307447&partnerID=8YFLogxK
U2 - 10.1002/adma.202407437
DO - 10.1002/adma.202407437
M3 - Article
C2 - 39300864
AN - SCOPUS:85204307447
SN - 0935-9648
VL - 36
JO - Advanced Materials
JF - Advanced Materials
IS - 46
M1 - 2407437
ER -