TY  - JOUR
AU  - Wu, Xueliang
AU  - Hu, Zhixiang
AU  - Graf, David
AU  - Liu, Yu
AU  - Deng, Chaoyue
AU  - Fu, Huixia
AU  - Kundu, Asish K.
AU  - Valla, Tonica
AU  - Petrović, Čedomir
AU  - Wang, Aifeng
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12448
AB  - We report a comprehensive study of magnetotransport properties, angle-resolved photoemission spectroscopy (ARPES), and density functional theory (DFT) calculations on self-flux grown LaAuSb2 single crystals. Resistivity and Hall measurements reveal a charge density wave (CDW) transition at 77 K. MR and de Haas-van Alphen measurements indicate that the transport properties of LaAuSb2 are dominated by Dirac fermions that arise from Sb square nets. ARPES measurements and DFT calculations reveal an electronic structure with a common feature of the square-net-based topological semimetals, which is in good agreement with the magnetotransport properties. Our results indicate the coexistence of CDW and Dirac fermion in LaAuSb2, both of which are linked to the bands arising from the Sb square net, suggesting that the square net could serve as a structural motif to explore various electronic orders.
T2  - Physical Review B
T1  - Coexistence of Dirac fermion and charge density wave in the square-net-based semimetal LaAuSb2
VL  - 108
IS  - 24
DO  - 10.1103/PhysRevB.108.245156
ER  - 

@article{
author = "Wu, Xueliang and Hu, Zhixiang and Graf, David and Liu, Yu and Deng, Chaoyue and Fu, Huixia and Kundu, Asish K. and Valla, Tonica and Petrović, Čedomir and Wang, Aifeng",
year = "2023",
abstract = "We report a comprehensive study of magnetotransport properties, angle-resolved photoemission spectroscopy (ARPES), and density functional theory (DFT) calculations on self-flux grown LaAuSb2 single crystals. Resistivity and Hall measurements reveal a charge density wave (CDW) transition at 77 K. MR and de Haas-van Alphen measurements indicate that the transport properties of LaAuSb2 are dominated by Dirac fermions that arise from Sb square nets. ARPES measurements and DFT calculations reveal an electronic structure with a common feature of the square-net-based topological semimetals, which is in good agreement with the magnetotransport properties. Our results indicate the coexistence of CDW and Dirac fermion in LaAuSb2, both of which are linked to the bands arising from the Sb square net, suggesting that the square net could serve as a structural motif to explore various electronic orders.",
journal = "Physical Review B",
title = "Coexistence of Dirac fermion and charge density wave in the square-net-based semimetal LaAuSb2",
volume = "108",
number = "24",
doi = "10.1103/PhysRevB.108.245156"
}

Wu, X., Hu, Z., Graf, D., Liu, Y., Deng, C., Fu, H., Kundu, A. K., Valla, T., Petrović, Č.,& Wang, A.. (2023). Coexistence of Dirac fermion and charge density wave in the square-net-based semimetal LaAuSb2. in Physical Review B, 108(24).
https://doi.org/10.1103/PhysRevB.108.245156

Wu X, Hu Z, Graf D, Liu Y, Deng C, Fu H, Kundu AK, Valla T, Petrović Č, Wang A. Coexistence of Dirac fermion and charge density wave in the square-net-based semimetal LaAuSb2. in Physical Review B. 2023;108(24).
doi:10.1103/PhysRevB.108.245156 .

Wu, Xueliang, Hu, Zhixiang, Graf, David, Liu, Yu, Deng, Chaoyue, Fu, Huixia, Kundu, Asish K., Valla, Tonica, Petrović, Čedomir, Wang, Aifeng, "Coexistence of Dirac fermion and charge density wave in the square-net-based semimetal LaAuSb2" in Physical Review B, 108, no. 24 (2023),
https://doi.org/10.1103/PhysRevB.108.245156 . .

TY  - JOUR
AU  - Liu, Yu
AU  - Tong, Xiao
AU  - Ivanovski, Valentin N.
AU  - Hu, Zhixiang
AU  - Leshchev, Denis
AU  - Zhu, Xiangde
AU  - Lei, Hechang
AU  - Stavitski, Eli
AU  - Attenkofer, Klaus
AU  - Koteski, Vasil J.
AU  - Petrović, Čedomir
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10479
AB  - Charge density waves (CDWs) with superconductivity, competing Fermi surface instabilities, and collective orders have captured much interest in two-dimensional van der Waals (vdW) materials. Understanding the CDW suppression mechanism, its connection to the emerging superconducting state, and electronic correlations provides opportunities for engineering the electronic properties of vdW heterostructures and thin-film devices. Using a combination of the thermal transport, x-ray photoemission spectroscopy, Raman measurements, and first-principles calculations, we observe an increase in electronic correlations of the conducting states as the CDW is suppressed in ZrTe3 with 5% Cu and Ni intercalation in the vdW gap. As superconductivity emerges, intercalation brings not only decoupling of quasi-one-dimensional conduction electrons with phonons as a consequence of intercalation-induced lattice expansion but also a drastic increase in Zr2+ at the expense of Zr4+ metal atoms. These observations not only demonstrate the potential of atomic intercalates in the vdW gap for ground-state tuning but also illustrate the crucial role of the Zr metal valence in the formation of collective electronic orders.
T2  - Physical Review B
T1  - Enhanced superconductivity and electron correlations in intercalated ZrTe3
VL  - 106
IS  - 16
SP  - 165113
DO  - 10.1103/PhysRevB.106.165113
ER  - 

@article{
author = "Liu, Yu and Tong, Xiao and Ivanovski, Valentin N. and Hu, Zhixiang and Leshchev, Denis and Zhu, Xiangde and Lei, Hechang and Stavitski, Eli and Attenkofer, Klaus and Koteski, Vasil J. and Petrović, Čedomir",
year = "2022",
abstract = "Charge density waves (CDWs) with superconductivity, competing Fermi surface instabilities, and collective orders have captured much interest in two-dimensional van der Waals (vdW) materials. Understanding the CDW suppression mechanism, its connection to the emerging superconducting state, and electronic correlations provides opportunities for engineering the electronic properties of vdW heterostructures and thin-film devices. Using a combination of the thermal transport, x-ray photoemission spectroscopy, Raman measurements, and first-principles calculations, we observe an increase in electronic correlations of the conducting states as the CDW is suppressed in ZrTe3 with 5% Cu and Ni intercalation in the vdW gap. As superconductivity emerges, intercalation brings not only decoupling of quasi-one-dimensional conduction electrons with phonons as a consequence of intercalation-induced lattice expansion but also a drastic increase in Zr2+ at the expense of Zr4+ metal atoms. These observations not only demonstrate the potential of atomic intercalates in the vdW gap for ground-state tuning but also illustrate the crucial role of the Zr metal valence in the formation of collective electronic orders.",
journal = "Physical Review B",
title = "Enhanced superconductivity and electron correlations in intercalated ZrTe3",
volume = "106",
number = "16",
pages = "165113",
doi = "10.1103/PhysRevB.106.165113"
}

Liu, Y., Tong, X., Ivanovski, V. N., Hu, Z., Leshchev, D., Zhu, X., Lei, H., Stavitski, E., Attenkofer, K., Koteski, V. J.,& Petrović, Č.. (2022). Enhanced superconductivity and electron correlations in intercalated ZrTe3. in Physical Review B, 106(16), 165113.
https://doi.org/10.1103/PhysRevB.106.165113

Liu Y, Tong X, Ivanovski VN, Hu Z, Leshchev D, Zhu X, Lei H, Stavitski E, Attenkofer K, Koteski VJ, Petrović Č. Enhanced superconductivity and electron correlations in intercalated ZrTe3. in Physical Review B. 2022;106(16):165113.
doi:10.1103/PhysRevB.106.165113 .

Liu, Yu, Tong, Xiao, Ivanovski, Valentin N., Hu, Zhixiang, Leshchev, Denis, Zhu, Xiangde, Lei, Hechang, Stavitski, Eli, Attenkofer, Klaus, Koteski, Vasil J., Petrović, Čedomir, "Enhanced superconductivity and electron correlations in intercalated ZrTe3" in Physical Review B, 106, no. 16 (2022):165113,
https://doi.org/10.1103/PhysRevB.106.165113 . .