Photon‐Gated Spin Transistor

Li, Fan; Song, Cheng; Cui, Bin; Peng, Junping; Gu, Youdi; Wang, Guangyue; Pan, Feng

doi:10.1002/adma.201604052

Cited by 12 publications

(17 citation statements)

References 29 publications

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“…Nowadays, all-optical control of ferromagnetism relies on intercoupling photons and spins. [18][19][20][21][22][23] In ferromagnetic (FM) films, researchers have switched magnetization between two states by femtosecond circularly polarized laser pulses due to the magneto-optical Faraday effect or optically induced electron and thermal excitations. [18][19][20] Nevertheless, regarding its applications, the laser-induced heating close to the Curie temperature could result in unstable optical-magnetic modulation and high energy consumption, and could also influence the neighbor magnetic domain of optical-driven memories, which will then limit the storage density and stability.…”

Section: Introductionmentioning

confidence: 99%

“…Li et al realized a 0.24% magnetoresistance change in perovskite La 1/2 Sr 1/2 MnO 3 at 240 K via light illumination. [21] Náfrádi et al manipulated ferromagnetic order in perovskite CH 3 NH 3 (Mn:Pb)I 3 at ≈5 K with a light induced Ruderman-Kittel-Kasuya-Yosida interactions. [22] Sun et al reported a spin current tunable NiFe/C 60 /AlO x /Co spin vale junction device, in which C 60 served as a photovoltaic layer.…”

Section: Introductionmentioning

confidence: 99%

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Sunlight Control of Interfacial Magnetism for Solar Driven Spintronic Applications

Zhao

Wang

et al. 2019

Advanced Science

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The inexorable trend of next generation spintronics is to develop smaller, lighter, faster, and more energy efficient devices. Ultimately, spintronics driven by free energy, for example, solar power, is imperative. Here, a prototype photovoltaic spintronic device with an optical‐magneto‐electric tricoupled photovoltaic/magnetic thin film heterojunction, where magnetism can be manipulated directly by sunlight via interfacial effect, is proposed. The magnetic anisotropy is reduced evidenced by the out‐of‐plane ferromagnetic resonance (FMR) field change of 640.26 Oe under 150 mW cm−2 illumination via in situ electron spin resonance (ESR) method. The transient absorption analysis and the first‐principles calculation reveal that the photovoltaic electrons doping in the cobalt film alter the band filling of this ferromagnetic film. The findings provide a new path of electron doping control magnetism and demonstrate an optical‐magnetic dual controllable logical switch with limited energy supply, which may further transform the landscape of spintronics research.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Sunlight Control of Interfacial Magnetism for Solar Driven Spintronic Applications

Zhao

Wang

et al. 2019

Advanced Science

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“…Understanding the mechanisms of how various quasi‐particles in solid state interact with each other is a fundamental issue. Insights into in this area are greatly helpful for various applications such as optical manipulation of magnetism and potential magnetic recording . The colossal magnetoresistance (CMR) of manganite compounds provide an ideal platform for investigating this topic.…”

mentioning

confidence: 99%

“…Insights into in this area are greatly helpful for various applications such as optical manipulation of magnetism [1] and potential magnetic recording. [2,3] The colossal magnetoresistance (CMR) of manganite compounds provide an ideal platform for investigating this topic. In the hole-doped perovskite manganites such as La 1Àx Sr x MnO 3 and La 1Àx Ca x MnO 3 , the ferromagnetism and the metallicity below the Curie temperature T C are explained by the double-exchange mechanism, where the itinerant e g electrons gain the kinetic energy.…”

mentioning

confidence: 99%

“…[2,3] The colossal magnetoresistance (CMR) of manganite compounds provide an ideal platform for investigating this topic. In the hole-doped perovskite manganites such as La 1Àx Sr x MnO 3 and La 1Àx Ca x MnO 3 , the ferromagnetism and the metallicity below the Curie temperature T C are explained by the double-exchange mechanism, where the itinerant e g electrons gain the kinetic energy. The kinetic energy is maximum when the core spins of the neighboring Mn 3d t 2g localized electrons are well aligned.…”

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confidence: 99%

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Observation of Small Polaron and Acoustic Phonon Coupling in Ultrathin La_0.7Sr_0.3MnO₃/SrTiO₃ Structures

Liu

Niu

Ruan

et al. 2019

Physica Rapid Research Ltrs

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Understanding the underlying physics of interactions among various quasi‐particles is a fundamental issue for the application of spintronics and photonics. Here the observation of a coupling between the small polarons in the nanoscale ultrathin La0.7Sr0.3MnO3 (LSMO) films and the acoustic phonons in the SrTiO3 (STO) substrate using ultrafast pump–probe spectroscopy has been reported. According to the temperature‐ and wavelength‐dependent measurements, the amplitudes of the acoustic phonons are suppressed by tuning the small polarons absorption. This shows a coupled relationship between the acoustic phonons and the small polarons. At the probe photon energy of 1.55 eV where the polaron absorption is dominant, the acoustic phonons become unobservable. Furthermore, by performing the pump fluence dependent measurements on the LSMO films with different thicknesses, smaller acoustic phonon amplitudes are found in the thinner film with stronger small polaron binding energy. Such a coupled nature can be utilized to manipulate the small polarons using the acoustic phonons or vice versa, which is of great importance in device applications of colossal magnetoresistance materials.

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Hydrogen‐Associated Multiple Electronic Phase Transitions for d‐Orbital Transitional Metal Oxides: Progress, Application, and Beyond

Zhou,

Li,

Jiao

et al. 2024

Adv Funct Materials

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Hydrogen‐associated electron doping Mottronics within d‐orbital transitional metal oxides (TMOs) opens up a new paradigm to explore exotic physical phenomena that enable promising applications such as artificial intelligence, Mottronic/iontronic devices, energy conversions, bio‐electronic sensing, and smart windows. Although remarkable progress is achieved over the past decade, systematic and in‐depth insights into hydrogen‐associated exotic physical phenomena within TMOs are still lacking. Herein, this review delivers a comprehensive and timely picture of hydrogen‐triggered electronic phase transitions within TMOs, covering the hydrogenation strategies, research progress, underneath mechanisms, multidisciplinary applications, and beyond. Furthermore, of particular interest, the hydrogenation or protonation enables the possibility of exploring the novel electronic phase and exotic physical properties within TMOs via breaking the intrinsic coupling in the charge, spin, lattice, and orbital degrees of freedom. Beyond that, a broader vision is further cast into the cutting‐edge researching fields of the multifunctionality associated with hydrogenated TMOs and the role of hydrogen in filling‐controlled Mottronic transitions by using hydrogenation. As combined with the critical overview of the existing open questions and future prospects, this review is expected to provide useful guidance on the hydrogen‐associated electronic phase transitions within TMOs and further broaden the promising applications.

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Photon‐Gated Spin Transistor

Cited by 12 publications

References 29 publications

Sunlight Control of Interfacial Magnetism for Solar Driven Spintronic Applications

Sunlight Control of Interfacial Magnetism for Solar Driven Spintronic Applications

Observation of Small Polaron and Acoustic Phonon Coupling in Ultrathin La_0.7Sr_0.3MnO₃/SrTiO₃ Structures

Hydrogen‐Associated Multiple Electronic Phase Transitions for d‐Orbital Transitional Metal Oxides: Progress, Application, and Beyond

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Photon‐Gated Spin Transistor

Cited by 12 publications

References 29 publications

Sunlight Control of Interfacial Magnetism for Solar Driven Spintronic Applications

Sunlight Control of Interfacial Magnetism for Solar Driven Spintronic Applications

Observation of Small Polaron and Acoustic Phonon Coupling in Ultrathin La0.7Sr0.3MnO3/SrTiO3 Structures

Hydrogen‐Associated Multiple Electronic Phase Transitions for d‐Orbital Transitional Metal Oxides: Progress, Application, and Beyond

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Observation of Small Polaron and Acoustic Phonon Coupling in Ultrathin La_0.7Sr_0.3MnO₃/SrTiO₃ Structures