Quantum transport evidence of isolated topological nodal-line fermions

Hoil Kim; Jong Mok Ok; Seyeong Cha; Bo Gyu Jang; Chang Il Kwon; Yoshimitsu Kohama; Koichi Kindo; Won Joon Cho; Eun Sang Choi; Youn Jung Jo; Woun Kang; Ji Hoon Shim; Keun Su Kim; Jun Sung Kim

doi:10.1038/s41467-022-34845-x

Quantum transport evidence of isolated topological nodal-line fermions

Hoil Kim, Jong Mok Ok, Seyeong Cha, Bo Gyu Jang, Chang Il Kwon, Yoshimitsu Kohama, Koichi Kindo, Won Joon Cho, Eun Sang Choi, Youn Jung Jo, Woun Kang, Ji Hoon Shim, Keun Su Kim, Jun Sung Kim

Department of Physics

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

Anomalous transport responses, dictated by the nontrivial band topology, are the key for application of topological materials to advanced electronics and spintronics. One promising platform is topological nodal-line semimetals due to their rich topology and exotic physical properties. However, their transport signatures have often been masked by the complexity in band crossings or the coexisting topologically trivial states. Here we show that, in slightly hole-doped SrAs₃, the single-loop nodal-line states are well-isolated from the trivial states and entirely determine the transport responses. The characteristic torus-shaped Fermi surface and the associated encircling Berry flux of nodal-line fermions are clearly manifested by quantum oscillations of the magnetotransport properties and the quantum interference effect resulting in the two-dimensional behaviors of weak antilocalization. These unique quantum transport signatures make the isolated nodal-line fermions in SrAs₃ desirable for novel devices based on their topological charge and spin transport.

Original language	English
Article number	7188
Journal	Nature communications
Volume	13
Issue number	1
DOIs	https://doi.org/10.1038/s41467-022-34845-x
Publication status	Published - 2022 Dec

Bibliographical note

Funding Information:
The authors would like to thank H. W. Lee, H. W. Yeom, E. J. Choi, and M. Kang for fruitful discussions. We would also thank H. G. Kim at the Pohang Accelerator Laboratory (PAL) for the technical support. This work was supported by the Basic Science Research Program (No. 2021R1I1A1A01060209 and No. NRF-2022R1A2C3009731), BrainLink program (No. 2022H1D3A3A01077468), the Max Planck POSTECH/Korea Research Initiative (Grant No. 2022M3H4A1A04074153 and 2020M3H4A2084417), funded by the Ministry of Science and ICT through the National Research Foundation (NRF) of Korea. This work is also supported by the Institute for Basic Science (IBS) through the Center for Artificial Low Dimensional Electronic Systems (no. IBS-R014-D1) and by Samsung Advanced Institute of Technology (SAIT). S.C. and K.S.K. were supported by the NRF (Grants No. NRF-2021R1A3B1077156, NRF-2017R1A5A1014862, NRF-2020K1A3A7A09080364, NRF-RS-2022-00143178). W.K. acknowledges the support from NRF (Grants No. 2018R1D1A1B07050087 and 2018R1A6A1A03025340). A portion of this work was performed at the National High Magnetic Field Laboratory, which is supported by the National Science Foundation Cooperative Agreement No. DMR-1644779 and the State of Florida.

Publisher Copyright:
© 2022, The Author(s).

All Science Journal Classification (ASJC) codes

Chemistry(all)
Biochemistry, Genetics and Molecular Biology(all)
General
Physics and Astronomy(all)

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title = "Quantum transport evidence of isolated topological nodal-line fermions",

abstract = "Anomalous transport responses, dictated by the nontrivial band topology, are the key for application of topological materials to advanced electronics and spintronics. One promising platform is topological nodal-line semimetals due to their rich topology and exotic physical properties. However, their transport signatures have often been masked by the complexity in band crossings or the coexisting topologically trivial states. Here we show that, in slightly hole-doped SrAs3, the single-loop nodal-line states are well-isolated from the trivial states and entirely determine the transport responses. The characteristic torus-shaped Fermi surface and the associated encircling Berry flux of nodal-line fermions are clearly manifested by quantum oscillations of the magnetotransport properties and the quantum interference effect resulting in the two-dimensional behaviors of weak antilocalization. These unique quantum transport signatures make the isolated nodal-line fermions in SrAs3 desirable for novel devices based on their topological charge and spin transport.",

author = "Hoil Kim and Ok, {Jong Mok} and Seyeong Cha and Jang, {Bo Gyu} and Kwon, {Chang Il} and Yoshimitsu Kohama and Koichi Kindo and Cho, {Won Joon} and Choi, {Eun Sang} and Jo, {Youn Jung} and Woun Kang and Shim, {Ji Hoon} and Kim, {Keun Su} and Kim, {Jun Sung}",

note = "Funding Information: The authors would like to thank H. W. Lee, H. W. Yeom, E. J. Choi, and M. Kang for fruitful discussions. We would also thank H. G. Kim at the Pohang Accelerator Laboratory (PAL) for the technical support. This work was supported by the Basic Science Research Program (No. 2021R1I1A1A01060209 and No. NRF-2022R1A2C3009731), BrainLink program (No. 2022H1D3A3A01077468), the Max Planck POSTECH/Korea Research Initiative (Grant No. 2022M3H4A1A04074153 and 2020M3H4A2084417), funded by the Ministry of Science and ICT through the National Research Foundation (NRF) of Korea. This work is also supported by the Institute for Basic Science (IBS) through the Center for Artificial Low Dimensional Electronic Systems (no. IBS-R014-D1) and by Samsung Advanced Institute of Technology (SAIT). S.C. and K.S.K. were supported by the NRF (Grants No. NRF-2021R1A3B1077156, NRF-2017R1A5A1014862, NRF-2020K1A3A7A09080364, NRF-RS-2022-00143178). W.K. acknowledges the support from NRF (Grants No. 2018R1D1A1B07050087 and 2018R1A6A1A03025340). A portion of this work was performed at the National High Magnetic Field Laboratory, which is supported by the National Science Foundation Cooperative Agreement No. DMR-1644779 and the State of Florida. Publisher Copyright: {\textcopyright} 2022, The Author(s).",

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doi = "10.1038/s41467-022-34845-x",

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AU - Kim, Hoil

AU - Ok, Jong Mok

AU - Cha, Seyeong

AU - Jang, Bo Gyu

AU - Kwon, Chang Il

AU - Kohama, Yoshimitsu

AU - Kindo, Koichi

AU - Cho, Won Joon

AU - Choi, Eun Sang

AU - Jo, Youn Jung

AU - Kang, Woun

AU - Shim, Ji Hoon

AU - Kim, Keun Su

AU - Kim, Jun Sung

N1 - Funding Information: The authors would like to thank H. W. Lee, H. W. Yeom, E. J. Choi, and M. Kang for fruitful discussions. We would also thank H. G. Kim at the Pohang Accelerator Laboratory (PAL) for the technical support. This work was supported by the Basic Science Research Program (No. 2021R1I1A1A01060209 and No. NRF-2022R1A2C3009731), BrainLink program (No. 2022H1D3A3A01077468), the Max Planck POSTECH/Korea Research Initiative (Grant No. 2022M3H4A1A04074153 and 2020M3H4A2084417), funded by the Ministry of Science and ICT through the National Research Foundation (NRF) of Korea. This work is also supported by the Institute for Basic Science (IBS) through the Center for Artificial Low Dimensional Electronic Systems (no. IBS-R014-D1) and by Samsung Advanced Institute of Technology (SAIT). S.C. and K.S.K. were supported by the NRF (Grants No. NRF-2021R1A3B1077156, NRF-2017R1A5A1014862, NRF-2020K1A3A7A09080364, NRF-RS-2022-00143178). W.K. acknowledges the support from NRF (Grants No. 2018R1D1A1B07050087 and 2018R1A6A1A03025340). A portion of this work was performed at the National High Magnetic Field Laboratory, which is supported by the National Science Foundation Cooperative Agreement No. DMR-1644779 and the State of Florida. Publisher Copyright: © 2022, The Author(s).

PY - 2022/12

Y1 - 2022/12

N2 - Anomalous transport responses, dictated by the nontrivial band topology, are the key for application of topological materials to advanced electronics and spintronics. One promising platform is topological nodal-line semimetals due to their rich topology and exotic physical properties. However, their transport signatures have often been masked by the complexity in band crossings or the coexisting topologically trivial states. Here we show that, in slightly hole-doped SrAs3, the single-loop nodal-line states are well-isolated from the trivial states and entirely determine the transport responses. The characteristic torus-shaped Fermi surface and the associated encircling Berry flux of nodal-line fermions are clearly manifested by quantum oscillations of the magnetotransport properties and the quantum interference effect resulting in the two-dimensional behaviors of weak antilocalization. These unique quantum transport signatures make the isolated nodal-line fermions in SrAs3 desirable for novel devices based on their topological charge and spin transport.

AB - Anomalous transport responses, dictated by the nontrivial band topology, are the key for application of topological materials to advanced electronics and spintronics. One promising platform is topological nodal-line semimetals due to their rich topology and exotic physical properties. However, their transport signatures have often been masked by the complexity in band crossings or the coexisting topologically trivial states. Here we show that, in slightly hole-doped SrAs3, the single-loop nodal-line states are well-isolated from the trivial states and entirely determine the transport responses. The characteristic torus-shaped Fermi surface and the associated encircling Berry flux of nodal-line fermions are clearly manifested by quantum oscillations of the magnetotransport properties and the quantum interference effect resulting in the two-dimensional behaviors of weak antilocalization. These unique quantum transport signatures make the isolated nodal-line fermions in SrAs3 desirable for novel devices based on their topological charge and spin transport.

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Quantum transport evidence of isolated topological nodal-line fermions

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