Discovery of smectic charge and pair-density-wave orders in topological monolayer 1T${}^{\prime }$-MoTe${}_2$

Abstract

Electronic liquid-crystal phases are observed in numerous strongly-correlated systems including high-temperature superconductors. However, identifying these exotic phases and understanding their interplay with superconductivity in topological materials remain challenging. Here we employ a cryogenic scanning tunneling microscopy to discover a smectic (stripe) charge order (CO) and a primary pair-density-wave (PDW) in topological monolayer 1T${}^{\prime }$-MoTe${}_2$. The two orders are spatially modulated unidirectionally at the same wavevector, but have a marked spatial phase difference of about 2$\pi$/5. Importantly, the primary PDW state features a two-gap superconductivity below the transition temperature of 6.0 K and induces another unique particle-hole-symmetric CO at twice the PDW wavevector. Combining these results and our density functional calculations, we reveal that the two smectic orders are primarily driven by nesting behaviors between electron and hole pockets. Our findings establish monolayer 1T${}^{\prime }$-MoTe${}_2$ as a topological paradigm for exploring electronic smecticity, which intertwines with multiple preexisting symmetry-breaking states.

arXiv comment16 pages, 4 figures, Supplementary materials

References in corpus (32)

• Quantum Spin Hall Effect and Topological Field Effect Transistor in Two-Dimensional Transition Metal Dichalcogenides
• Realization of Quantum Spin Hall State in Monolayer 1T'-WTe2
• Observation of the Quantum Spin Hall Effect up to 100 Kelvin in a Monolayer Crystal
• Experimental observation of topological Fermi arcs in type-II Weyl semimetal MoTe2
• Superconductivity in Weyl Semimetal Candidate MoTe2
• Charge-Order and Broken Rotational Symmetry in Magic Angle Twisted Bilayer Graphene
• Roton pair density wave and unconventional strong-coupling superconductivity in a topological kagome metal
• The Physics of Pair Density Waves
• Electrically Tunable Low Density Superconductivity in a Monolayer Topological Insulator
• Two-Band Superconductivity in MgB2
• Striped superconductors: How the cuprates intertwine spin, charge and superconducting orders
• Stripe phases in WSe2/WS2 moiré superlattices
• Coupled Ferroelectricity and Superconductivity in Bilayer $T_d$-MoTe${}_2$
• Quantum-spin-Hall insulator with a large gap: single-layer 1T' WSe${}_2$
• Theory of the striped superconductor
• Observation of Topologically Protected States at Crystalline Phase Boundaries in Single-layer WSe2
• Possible topologically non-trivial superconducting order parameter in type-II Weyl semimetal T_d-MoTe_2
• Proximity-induced superconducting gap in the quantum spin Hall edge state of monolayer WTe${}_2$
• Discovery of a Cooper-Pair Density Wave State in a Transition-Metal Dichalcogenide
• Visualizing the Energy-gap Modulations of the Cuprate Pair Density Wave State
• Detection of a Pair Density Wave State in UTe${}_2$
• Transport evidence of asymmetric spin-orbit coupling in few$-$layer superconducting 1Td$-$MoTe${}_2$
• Discovery of a pair density wave state in a monolayer high-Tc iron-based superconductor
• Magnetic-field sensitive charge density wave orders in the superconducting phase of UTe2
• Smectic Pair Density Wave Order in EuRbFe4As4
• A comprehensive review on topological superconducting materials and interfaces
• Growth, stabilization and conversion of semi-metallic and semiconducting phases of MoTe2 monolayer by molecular-beam epitaxy
• Identification of a Nematic Pair Density Wave State in Bi2Sr2CaCu2O8+x
• The soft-mode phonons mediated unconventional superconductivity in monolayer 1T'-WTe2
• Light-tunable charge density wave orders in MoTe2 and WTe2 single layers
• Topological Superconductivity in Monolayer T${}_{\text{d}}$-MoTe${}_2$
• Two-fold anisotropic superconducting state in topological superconductor Sn${}_4$Au

Cited by in corpus (3)

• Imaging half-unit-cell Cooper-pair density waves in monolayer 1T${}^{\prime }$-MoTe${}_2$
• Probing Quantum Geometric Phases via Scanning Tunneling Microscopy
• Visualizing Pair-breaking Scattering Interference in Bulk FeSe