Ionic Liquid Gating Induced Protonation of Electron-Doped Cuprate Superconductors

Rafique, Mohsin; Feng, Zhaochi; Lin, Zefeng; Wei, Xinjian; Liao, Menghan; Zhang, Ding; Jin, Kui; Xue, Quan

doi:10.1021/acs.nanolett.9b02776

Cited by 18 publications

(14 citation statements)

References 28 publications

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“…Instead, H + injection/removal is the most plausible explanation [29]. Our recent work has also proven H + injection/removal as the main mechanism to tune the superconductivity in another electrondoped cuprate LCCO [38]. H + ions locate at interstitial positions, and go out once the gate voltage is withdrawn.…”

Section: Volatile Superconductivity With Positive Gate Voltagementioning

confidence: 95%

“…Several possible effects, such as electrostatic charge modulation [15,16], oxygen removal [28,35], and H + ions injection [23,[36][37][38] may arise during the PGV process in the oxide system. Considering the fact that the thickness of the PCO thin film,~60 nm, is much larger than the Thomas-Fermi screening length (several nanometers), pure electrostatic field effect can only modulate the electronic property of the surface layers, and therefore cannot extend to the whole film and suppress the superconductivity of the bulk.…”

Section: Volatile Superconductivity With Positive Gate Voltagementioning

confidence: 99%

“…It is known that unavoidable water inside the ionic liquid can decompose into negatively charged O 2À and positively charged H + through electrolysis if sufficiently high gate voltage is applied [23,38]. Under NGV, anions accumulate on the surface of the sample.…”

Section: Non-volatile Superconductivity With Negative Gate Voltagementioning

confidence: 99%

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

Wei

Zhang

et al. 2020

Science Bulletin

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Electric-field control of non-volatile magnetization switching without external-magnetic-field bias in CoFeB/(011)-PMN-0.3PT heterostructures Europhysics letters 109, 17008 (2015); Simulations of single event effects on the ferroelectric capacitor-based non-volatile SRAM design SCIENCE CHINA Information Sciences 64, 149401 (2021); Simulation of Titan's atmospheric photochemistry-Formation of non-volatile residue from polar nitrile ices Astronomy & Astrophysics 578, A111 (2015); Non-volatile memory based on atomic crystals

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Section: Volatile Superconductivity With Positive Gate Voltagementioning

confidence: 95%

Section: Volatile Superconductivity With Positive Gate Voltagementioning

confidence: 99%

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

Wei

Zhang

et al. 2020

Science Bulletin

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“…Möckli和Khodas [66] 认为面内平行磁场将s波转变为同位旋的f 波, 最终得到s+if非常规超导. Liu [67] , Nakamura和Yanase [68] [76,77] , YBCO [78,79] , La 2 -CuO 4+δ [80] , Pr 2 CuO 4+δ [81] 和NdBaCu 3 O 7 [82] , 以及电子掺杂的Pr 2−x Ce x CuO 4 [83,84] 和La 2−x Ce x CuO 4 [85,86] . 高T c 的超导态.…”

Section: 供了便利相比单层样品中能量最低谷在K点多层样unclassified

“…Cui等人 [103] 则用核磁共振(NMR)实验证实了H + 注入在系列铁基超导体(11和122体系)的调控中发挥了重要的作用. 巧合的是, Lei等人 [104] 和Ying等人 [105] [108] ; Rafique等人 [86] [110] .…”

Section: 学腐蚀导致的临界厚度加上静电场调控的结果并在unclassified

Ionic gating in the study of superconductivity

Jiang

Lü

et al. 2021

Sci. Sin.-Phys. Mech. Astron.

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Modulations in Superconductors: Probes of Underlying Physics

et al. 2023

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development of various modulations techniques, breakthroughs in quantum materials are achieved, such as the quantum anomalous Hall effect (AHE) in topological insulators, [1][2][3][4] gate-tuned roomtemperature ferromagnetism in 2D van der Waals materials, [5][6][7][8] and emergent magnetic monopoles in artificial spin ice. [9] Especially, as the quantum materials of particular interest with zero dissipation, superconductors have been intensively studied with advanced modulations, aiming to reveal a plethora of emergent phenomena in condensed matter physics, such as superconductor-to-insulator transitions (SIT), [10][11][12] intermediate bosonic metallic state, [13] Bose-Einstein condensation (BEC)-Bardeen-Cooper-Schrieffer (BCS) crossover, [14,15] and intertwined orders, [16][17][18] as well as to develop applications in quantum computing [19][20][21] and ultrasensitive detections. [22][23][24] The superconductivity composes of two ingredients, including the Cooper pairs, each formed by two electrons, and phase coherence among Cooper pairs. [25] Superconductors such as metals and alloys are in the weak-coupling regime, which is well understood by BCS theory. [26,27] However, the later discovered superconductors, including cuprates, iron-based superconductors, and heavy-fermion superconductors, are strongly correlated systems, where a widely accepted microscopic mechanism yet remains absent. Therefore, various modulations have been utilized for the ultimate understanding of these superconductors and routines for room temperature superconductivity. Traditional modulations, such as elemental substitution, annealing, and polarization-induced gating are usually accompanied by some severe problems, including discontinuity, disorders, and limited ranges. Recently, state-of-the-art techniques have been developed with improved convenience, increased capability, and unprecedented dimensionalities, enabling more thorough investigations of unconventional superconductors.As a manifestation, we take some examples discussed in this review in advance. The carrier density can be tuned more conveniently and continuously. The techniques of ionic field-effect transistor (iFET) and electric double-layer transistor (EDLT) surpass conventional methods limited by solid solubility or dielectric breakdown, which enables the more precise phase diagram and detailed scaling analysis at the quantum phaseThe importance of modulations is elevated to an unprecedented level, due to the delicate conditions required to bring out exotic phenomena in quantum materials, such as topological materials, magnetic materials, and superconductors. Recently, state-of-the-art modulation techniques in material science, such as electric-double-layer transistor, piezoelectric-based strain apparatus, angle twisting, and nanofabrication, have been utilized in superconductors. They not only efficiently increase the tuning capability to the broader ranges but also extend the tuning dimensionality to unprecedented degrees of freedom, including quantum fluctuations of...

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Ionic Liquid Gating Induced Protonation of Electron-Doped Cuprate Superconductors

Cited by 18 publications

References 28 publications

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

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

Ionic gating in the study of superconductivity

Modulations in Superconductors: Probes of Underlying Physics

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