Superconductivity in the 
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 kagome metal 
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Ortiz, Brenden R.; Sarte, Paul M.; Kenney, Eric; Graf, M. J.; Teicher, Samuel M. L.; Seshadri, Ram; Wilson, Stephen D.

doi:10.1103/physrevmaterials.5.034801

Cited by 363 publications

(170 citation statements)

References 42 publications

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“…In addition, these kagome materials provide a novel platform to investigate topological electronic states [9][10][11][12][13][14][15] . Recently, a new family of kagome metals AV3Sb5 (A = K, Rb, or Cs) has been discovered 16 , and shortly afterwards, superconductivity is reported in this system [17][18][19] . The superconducting transition temperature (Tc) in CsV3Sb5 can be easily enhanced by pressure [20][21][22][23] .…”

Section: Introductionmentioning

confidence: 99%

“…Although the superconductivity is argued to be a strong coupling one [24][25][26] probably with triplet pairing 27 , the gap symmetry of this superconductor remains controversial 21,[24][25][26][28][29][30][31][32] and requires further study. Besides the superconducting state, there is also a CDW transition in AV3Sb5 [16][17][18][19] . The CDW order has been investigated experimentally [33][34][35] and theoretically 36,37 ; it is probably driven by the nesting of saddle points near M points 18,35 .…”

Section: Introductionmentioning

confidence: 99%

“…Besides the superconducting state, there is also a CDW transition in AV3Sb5 [16][17][18][19] . The CDW order has been investigated experimentally [33][34][35] and theoretically 36,37 ; it is probably driven by the nesting of saddle points near M points 18,35 . This issue and related electronic states of CDW are also investigated on atomic scale 24,25,[38][39][40] .…”

Section: Introductionmentioning

confidence: 99%

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Twofold symmetry of c-axis resistivity in topological kagome superconductor CsV3Sb5 with in-plane rotating magnetic field

Xiang¹,

Li²,

Li³

et al. 2021

Preprint

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In transition metal compounds, due to the interplay of charge, spin, lattice and orbital degrees of freedom, many intertwined orders exist with close energies. One of the commonly observed states is the so-called nematic electron state, which breaks the in-plane rotational symmetry. This nematic state appears in cuprates, iron based superconductor, etc. Nematicity may coexist, affect, cooperate or compete with other orders. Here we show the anisotropic in-plane electronic state and superconductivity in a recently discovered kagome metal CsV3Sb5 by measuring c-axis resistivity with the in-plane rotation of magnetic field. We observe a twofold symmetry of superconductivity in the superconducting state and a unique in-plane nematic electronic state in normal state when rotating the in-plane magnetic field. Interestingly these two orders are orthogonal to each other in terms of the field direction of the minimum resistivity. Our results shed new light in understanding non-trivial physical properties of CsV3Sb5.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Twofold symmetry of c-axis resistivity in topological kagome superconductor CsV3Sb5 with in-plane rotating magnetic field

Xiang¹,

Li²,

Li³

et al. 2021

Preprint

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“…Recently, superconductivity was discovered in a new family of V-based compounds AV3Sb5 (A = K, Rb, and Cs) [1][2][3][4] . These compounds have the ideal Kagome lattice of vanadium coordinated by antimony, with the A atoms intercalated between the layers, as seen in Fig.…”

Section: Introductionmentioning

confidence: 99%

“…

Recently superconductivity was discovered in the Kagome metal AV3Sb5 (A = K, Rb, and Cs), which has an ideal Kagome lattice of vanadium [1][2][3][4] . These V-based superconductors also host charge density wave (CDW) 5 and topological nontrivial band structure 2,6 , thus provide a great platform to study the interplay of superconductivity, CDW, frustration, and topology.

…”

mentioning

confidence: 99%

Nodal superconductivity and superconducting domes in the topological Kagome metal CsV3Sb5

Li¹,

Zhao²,

Wang³

et al. 2021

Preprint

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Recently superconductivity was discovered in the Kagome metal AV3Sb5 (A = K, Rb, and Cs), which has an ideal Kagome lattice of vanadium1-4. These V-based superconductors also host charge density wave (CDW)5 and topological nontrivial band structure2,6, thus provide a great platform to study the interplay of superconductivity, CDW, frustration, and topology. Here we report the ultralow-temperature thermal conductivity and high pressure resistance measurements on CsV3Sb5 with Tc ≈ 2.5 K, the highest among AV3Sb5. A finite residual linear term of thermal conductivity at zero magnetic field and its rapid increase in fields suggest nodal superconductivity. By applying pressure, the Tc of CsV3Sb5 increases first, then decreases to lower than 0.3 K at 11.4 GPa, demonstrating a clear first superconducting dome peaked around 0.8 GPa. Above 11.4 GPa, superconductivity re-emerges, showing a second superconducting dome. Both nodal superconductivity and superconducting domes point to unconventional superconductivity in this V-based superconductor. While our finding of nodal superconductivity puts a strong constrain on the pairing state of the first dome, which should be related to the CDW instability, the superconductivity of the second dome may present another exotic pairing state in this ideal Kagome lattice of vanadium.

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Charge Density Wave Orders and Enhanced Superconductivity under Pressure in the Kagome Metal CsV₃Sb₅

et al. 2021

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Superconductivity in topological kagome metals has recently received great research interests. Here, charge density wave (CDW) orders and the evolution of superconductivity under various pressures in CsV3Sb5 single crystal with V kagome lattice are investigated. By using high‐resolution scanning tunneling microscopy/spectroscopy (STM/STS), two CDW orders in CsV3Sb5 are observed which correspond to 4a × 1a and 2a × 2a superlattices. By applying pressure, the superconducting transition temperature Tc is significantly enhanced and reaches a maximum value of 8.2 K at around 1 GPa. Accordingly, CDW state is gradually declined as increasing the pressure, which indicates the competing interplay between CDW and superconducting state in this material. The broad superconducting transitions around 0.4–0.8 GPa can be related to the strong competition relation among two CDW states and superconductivity. These results demonstrate that CsV3Sb5 is a new platform for exploring the interplay between superconductivity and CDW in topological kagome metals.

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Superconductivity in the Z2 kagome metal KV3Sb5

Cited by 363 publications

References 42 publications

Twofold symmetry of c-axis resistivity in topological kagome superconductor CsV3Sb5 with in-plane rotating magnetic field

Twofold symmetry of c-axis resistivity in topological kagome superconductor CsV3Sb5 with in-plane rotating magnetic field

Nodal superconductivity and superconducting domes in the topological Kagome metal CsV3Sb5

Charge Density Wave Orders and Enhanced Superconductivity under Pressure in the Kagome Metal CsV₃Sb₅

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Superconductivity in the Z2 kagome metal KV3Sb5

Cited by 363 publications

References 42 publications

Twofold symmetry of c-axis resistivity in topological kagome superconductor CsV3Sb5 with in-plane rotating magnetic field

Twofold symmetry of c-axis resistivity in topological kagome superconductor CsV3Sb5 with in-plane rotating magnetic field

Nodal superconductivity and superconducting domes in the topological Kagome metal CsV3Sb5

Charge Density Wave Orders and Enhanced Superconductivity under Pressure in the Kagome Metal CsV3Sb5

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Charge Density Wave Orders and Enhanced Superconductivity under Pressure in the Kagome Metal CsV₃Sb₅