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相关论文: Spin filtering in transition-metal phthalocyanine …

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We report an advanced organic spin-interface architecture with magnetic remanence at room temperature, constituted by metal phthalocyanine molecules magnetically coupled with Co layer(s), mediated by graphene. Fe- and Cu-phthalocyanines…

We investigate equilibrium and transport properties of a copper phthalocyanine (CuPc) molecule adsorbed on Au(111) and Ag(111) surfaces. The CuPc molecule has essentially three localized orbitals close to the Fermi energy resulting in…

强关联电子 · 物理学 2019-01-30 Michael Rumetshofer , Daniel Bauernfeind , Enrico Arrigoni , Wolfgang von der Linden

Precise control of spin states and spin-spin interactions in atomic-scale magnetic structures is crucial for spin-based quantum technologies. A promising architecture is molecular spin systems, which offer chemical tunability and…

We investigate the spin- and energy dependent tunneling through a single organic molecule (CoPc) adsorbed on a ferromagnetic Fe thin film, spatially resolved by low-temperature spin-polarized scanning tunneling microscopy. Interestingly,…

Transition-metal phthalocyanine molecules have attracted considerable interest in the context of spintronics device development due to their amenability to diverse bonding regimes and their intrinsic magnetism. The latter is highly…

强关联电子 · 物理学 2024-12-19 Sumanta Bhandary , Emiliano Poli , Gilberto Teobaldi , David D. O'Regan

An investigation of possibilities for superconductivity mediated by spin fluctuations in some elementary metals is motivated by the recent discovery of superconductivity in the hcp high-pressure phase of iron. The electronic structure, the…

超导电性 · 物理学 2016-08-31 T. Jarlborg

Spin-polarized current through an Al nanoparticle in tunnel contact with two ferromagnets is measured as a function of the direction of the applied magnetic field. The nanoparticle filters the spin of injected electrons along a direction…

介观与纳米尺度物理 · 物理学 2008-09-15 F. T. Birk , C. E. Malec , D. Davidovic

The spin filtering effect, distinct decaying lengths experienced by oppositely spin-polarized electrons in a magnetic barrier, generally occurs in ferromagnetic (FM) insulators or semiconductors. With the rise of altermagnetic (ALM)…

材料科学 · 物理学 2025-01-08 Boyuan Chi , Leina Jiang , Yu Zhu , Guoqiang Yu , Caihua Wan , Xiufeng Han

The origins of indirect spin exchange in crystalline thin films of Copper Octabutoxy Phthalocyanine (Cu-OBPc) are investigated using Magnetic Circular Dichroism (MCD) spectroscopy. These studies are made possible by a solution deposition…

It is predicted that certain atomically ordered interfaces between some ferromagnetic metals (F) and semiconductors (S) should act as ideal spin filters that transmit electrons only from the majority spin bands or only from the minority…

材料科学 · 物理学 2009-10-31 George Kirczenow

We report first principles theory-based comparative electronic transport studies performed for an atomic chain of Au, bare Cd9Te9 cage-like cluster and single transition metal (TM) (Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ru, Rh, Pd) atom…

介观与纳米尺度物理 · 物理学 2022-04-06 Kashinath T Chavan , Sharat Chandra , Anjali Kshirsagar

Iron phthalocyanine (FePc) is a molecular semiconductor whose building blocks are one-dimensional ferromagnetic chains. We show that its optical and magnetic properties are controlled by the growth strategy, obtaining extremely high…

强关联电子 · 物理学 2019-10-17 Zhenlin Wu , Peter Robaschik , Luke R. Fleet , Solveig Felton , Gabriel Aeppli , Sandrine Heutz

We investigate the spectral evolution in different metal phthalocyanine molecules on NbSe$_2$ surface using scanning tunnelling microscopy (STM) as a function of the coupling with the substrate. For manganese phthalocyanine (MnPc), we…

介观与纳米尺度物理 · 物理学 2019-07-15 Shawulienu Kezilebieke , Rok Žitko , Marc Dvorak , Teemu Ojanen , Peter Liljeroth

For a linear chain of diamond-like elements, we show that the Rashba spin-orbit interaction (which can be tuned by a perpendicular gate voltage) and the Aharonov-Bohm flux (due to a perpendicular magnetic field) can combine to select only…

介观与纳米尺度物理 · 物理学 2009-11-13 Amnon Aharony , Ora Entin-Wohlman , Yasuhiro Tokura , Shingo Katsumoto

Controlling the spin transport at the single-molecule level, especially without the use of ferromagnetic contacts, becomes a focus of research in spintronics. Inspired by the progress on atomic-level molecular synthesis, through…

原子与分子团簇 · 物理学 2022-11-17 Yan-Dong Guo , Xue Zhao , Hong-Ru Zhao , Li Yang , Li-Yan Lin , Yue Jiang , Dan Ma , Yu-Ting Chen , Xiao-Hong Yan

We investigate theoretically the prospects for using a magnetic nanoelectromechanical single-electron tunneling (NEM-SET) device as an electronic spin filter. We find that strong magnetic exchange forces on the net spin of the mobile…

介观与纳米尺度物理 · 物理学 2012-09-25 Robert I. Shekhter , Artem Pulkin , Mats Jonson

Spin-polarized currents play a key role in spintronics. Recently, it has been found that antiferromagnets with a non-spin-degenerate band structure can efficiently spin-polarize electric currents, even though their net magnetization is…

材料科学 · 物理学 2021-12-20 Gautam Gurung , Ding-Fu Shao , Evgeny Y. Tsymbal

Electronic transport in a zig-zag-edge graphene nanoribbon (GNR) and its modification by adsorbed transition metal porphyrins is studied by means of density functional theory calculations. The detachment reaction of the metal centre of the…

介观与纳米尺度物理 · 物理学 2019-09-27 P. Kratzer , Sherif Abdulkader Tawfik , X. Y. Cui , C. Stampfl

Electrical manipulation of magnetic order by current-induced spin torques lays the foundation for spintronics. One promising approach is encoding information in the N\'eel vector of antiferromagnetic (AFM) materials, particularly to…

Transition metal phthalocyanines (TMPc's) are under intense scrutiny in the field of spintronics, as they may be promising storage devices. The simplicity and cheapness of such molecules increase their commercial potential. There is an…

材料科学 · 物理学 2022-10-04 Aleksei Koshevarnikov , Jacek A. Majewski