Continuous Low‐Bias Switching of Superconductivity in a MoS₂ Transistor

Abstract

Engineering the properties of quantum electron systems, e.g., tuning the superconducting phase using low driving bias within an easily accessible temperature range, is of great interest for exploring exotic physical phenomena as well as achieving real applications. Here, the realization of continuous field-effect switching between superconducting and non-superconducting states in a few-layer MoS transistor is reported. Ionic-liquid gating induces the superconducting state close to the quantum critical point on the top surface of the MoS , and continuous switching between the super/non-superconducting states is achieved by HfO back gating. The superconducting transistor works effectively in the helium-4 temperature range and requires a gate bias as low as ≈10 V. The dual-gate device structure and strategy presented here can be easily generalized to other systems, opening new opportunities for designing high-performance 2D superconducting transistors.

A selective control of volatile and non-volatile superconductivity in an insulating copper oxide via ionic liquid gating

“…Lately, ionic liquid gating (ILG) technique emerged as an attractive method to trigger phase transitions by tuning the charge carriers in a large scale (10 14 -10 15 cm À2 ) with the electrostatic field effect [9][10][11][12][13][14]. For example, ILG can turn semiconducting ZrNCl [15] and MoS 2 [16] into superconductors, and tune the superconducting properties of La 2Àx Sr x CuO 4 [17], YBa 2 Cu 3 O 7Àd [18], Pr 2Àx -Ce x CuO 4 [19,20], La 1.95 Ce 0.05 CuO 4 [21], and FeSe [22].…”

Nanoscale functionalized superconducting transport channels as photon detectors

“…Changes in molecular electric dipole moments are well-known to occur upon photon absorption, and have been shown to modulate semiconducting electronic transport channels 7 . Their impact on SC channels may be expected based on the report of SC transistors where the gate is essentially equivalent to an electrostatic dipole 18 .…”

The Holy Grail in Platinum‐Free Electrocatalytic Hydrogen Evolution: Molybdenum‐Based Catalysts and Recent Advances

“…MoS 2 exhibits many intriguing properties, and is usually employed as a dry lubricant, transistor, logic circuit, sensor, and catalyst, and therefore has attracted intensive attention over the past decade . As a typical transition‐metal dichalcogenides (TMD) material, bulk MoS 2 generally crystallizes with a hexagonally packed layered structure, similar to graphite, of which the individual sheets are stacked weakly with an interlayer ∼6.5 Å van der Waals spacing . Such a crystal structure endows MoS 2 with a ∼2200 times faster carrier mobility along basal plane than perpendicularly between sheets .…”