Charge density waves in the 2.5-dimensional quantum heterostructure

F. Z. Yang; T. T. Zhang; F. Y. Meng; H. C. Lei; C. Nelson; Y. Q. Cai; E. Vescovo; A. H. Said; P. M. Lozano; G. Fabbris; H. Miao

doi:10.1103/PhysRevB.111.L041101

Charge density waves in the 2.5-dimensional quantum heterostructure

F. Z. Yang, T. T. Zhang, F. Y. Meng, H. C. Lei, C. Nelson, Y. Q. Cai, E. Vescovo, A. H. Said, P. M. Lozano, G. Fabbris, H. Miao

Quantum Heterostructures

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

Abstract

Charge density wave (CDW) and their interplay with correlated and topological quantum states are at the forefront of condensed matter research. The 4Hb-TaS2 is a CDW ordered quantum heterostructure that is formed by alternative stacking of Mott insulating 1T-TaS2 and Ising superconducting 1H-TaS2. While the 13×13 and 3×3 CDWs have been respectively observed in the bulk 1T-TaS2 and 2H-TaS2, the CDWs and their pivotal role for unconventional superconductivity in the 4Hb-TaS2 remain unsolved. In this Letter, we reveal the two-dimensional (2D) 13×13 chiral CDW in the 1T layers and intraunit cell coupled 2D 2×2 CDW in the 1H and 1H' layers of 4Hb-TaS2. Our results establish 4Hb-TaS2 a 2.5D quantum heterostructure, where 2D quantum states emerge from 3D crystalline structure.

Original language	English
Article number	L041101
Journal	Physical Review B
Volume	111
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevB.111.L041101
State	Published - Jan 15 2025

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title = "Charge density waves in the 2.5-dimensional quantum heterostructure",

abstract = "Charge density wave (CDW) and their interplay with correlated and topological quantum states are at the forefront of condensed matter research. The 4Hb-TaS2 is a CDW ordered quantum heterostructure that is formed by alternative stacking of Mott insulating 1T-TaS2 and Ising superconducting 1H-TaS2. While the 13×13 and 3×3 CDWs have been respectively observed in the bulk 1T-TaS2 and 2H-TaS2, the CDWs and their pivotal role for unconventional superconductivity in the 4Hb-TaS2 remain unsolved. In this Letter, we reveal the two-dimensional (2D) 13×13 chiral CDW in the 1T layers and intraunit cell coupled 2D 2×2 CDW in the 1H and 1H' layers of 4Hb-TaS2. Our results establish 4Hb-TaS2 a 2.5D quantum heterostructure, where 2D quantum states emerge from 3D crystalline structure.",

author = "Yang, {F. Z.} and Zhang, {T. T.} and Meng, {F. Y.} and Lei, {H. C.} and C. Nelson and Cai, {Y. Q.} and E. Vescovo and Said, {A. H.} and Lozano, {P. M.} and G. Fabbris and H. Miao",

note = "Publisher Copyright: {\textcopyright} 2025 American Physical Society. ",

year = "2025",

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day = "15",

doi = "10.1103/PhysRevB.111.L041101",

language = "English",

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journal = "Physical Review B",

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T1 - Charge density waves in the 2.5-dimensional quantum heterostructure

AU - Yang, F. Z.

AU - Zhang, T. T.

AU - Meng, F. Y.

AU - Lei, H. C.

AU - Nelson, C.

AU - Cai, Y. Q.

AU - Vescovo, E.

AU - Said, A. H.

AU - Lozano, P. M.

AU - Fabbris, G.

AU - Miao, H.

PY - 2025/1/15

Y1 - 2025/1/15

N2 - Charge density wave (CDW) and their interplay with correlated and topological quantum states are at the forefront of condensed matter research. The 4Hb-TaS2 is a CDW ordered quantum heterostructure that is formed by alternative stacking of Mott insulating 1T-TaS2 and Ising superconducting 1H-TaS2. While the 13×13 and 3×3 CDWs have been respectively observed in the bulk 1T-TaS2 and 2H-TaS2, the CDWs and their pivotal role for unconventional superconductivity in the 4Hb-TaS2 remain unsolved. In this Letter, we reveal the two-dimensional (2D) 13×13 chiral CDW in the 1T layers and intraunit cell coupled 2D 2×2 CDW in the 1H and 1H' layers of 4Hb-TaS2. Our results establish 4Hb-TaS2 a 2.5D quantum heterostructure, where 2D quantum states emerge from 3D crystalline structure.

AB - Charge density wave (CDW) and their interplay with correlated and topological quantum states are at the forefront of condensed matter research. The 4Hb-TaS2 is a CDW ordered quantum heterostructure that is formed by alternative stacking of Mott insulating 1T-TaS2 and Ising superconducting 1H-TaS2. While the 13×13 and 3×3 CDWs have been respectively observed in the bulk 1T-TaS2 and 2H-TaS2, the CDWs and their pivotal role for unconventional superconductivity in the 4Hb-TaS2 remain unsolved. In this Letter, we reveal the two-dimensional (2D) 13×13 chiral CDW in the 1T layers and intraunit cell coupled 2D 2×2 CDW in the 1H and 1H' layers of 4Hb-TaS2. Our results establish 4Hb-TaS2 a 2.5D quantum heterostructure, where 2D quantum states emerge from 3D crystalline structure.

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U2 - 10.1103/PhysRevB.111.L041101

DO - 10.1103/PhysRevB.111.L041101

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SN - 2469-9950

VL - 111

JO - Physical Review B

JF - Physical Review B

IS - 4

M1 - L041101

ER -

Charge density waves in the 2.5-dimensional quantum heterostructure

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