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2 article(s) from Timm, Carsten

Electronic structure, transport, and collective effects in molecular layered systems

Torsten Hahn,
Tim Ludwig,
Carsten Timm and
Jens Kortus

Beilstein J. Nanotechnol. 2017, 8, 2094–2105, doi:10.3762/bjnano.8.209

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Figure 1: Results of DFT calculations for phthalocyanine stacks on fcc-Au(111) surfaces: relaxed geometries o...

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Figure 2: I–V curves calculated within the DFT-NEGF method for the sandwich structure a) CoPc/CoPc and b) F₁₆...

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Figure 3: Results of DFT calculations for phthalocyanine stacks on fcc-Ni(111) surfaces: relaxed geometries o...

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Figure 4: Calculated TMR for the sandwich structure a) CoPc/CoPc and b) F₁₆CoPc/MnPc on Ni(111). The TMR as a...

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Figure 5: Absolute value squared of the tunneling amplitude a) between the STM tip and a CoPc HOMO on a graph...

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Figure 6: Average imbalance [Graphic 29] between the occupations n_A and n_B of the two checkerboard sublattices for a) asy...

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Figure 7: Average current [Graphic 30] per site for a) asymmetric tunneling, Γ_top/Γ_bottom = 0.5, and b) symmetric tunneli...

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Full Research Paper

Published 06 Oct 2017

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Spin-dependent transport and functional design in organic ferromagnetic devices

Guichao Hu,
Shijie Xie,
Chuankui Wang and
Carsten Timm

Beilstein J. Nanotechnol. 2017, 8, 1919–1931, doi:10.3762/bjnano.8.192

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Figure 1: Schematic of an organic ferromagnetic device.

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Figure 2: (a) Current–voltage characteristics for a OF device with N = 20 carbon sites. (b) Spin polarization...

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Figure 3: Density of states of the OF device at a bias of 0.8 V. Here, the Fermi energy of the electrodes is ...

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Figure 4: (a) Spin polarization of the current as a function of the spin coupling strength j for a bias of 0....

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Figure 5: Density of states of (a) Co and (b) the OF poly-BIPO. The molecular length is 20 sites. (c) Schemat...

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Figure 6: Current–voltage characteristics of a Co/OF/Co junction for the four magnetization configurations C1...

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Figure 7: Spin-dependent transmission T_σσ(E) as a function of energy close to the Fermi energy for the four m...

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Figure 8: Bias-dependent (a) CC and (b) SC through an asymmetric OF device with N = 20 and E_F = 0. The arrows...

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Figure 9: Spin-dependent transmission near the Fermi energy for N = 20 and E_F = 0 at the bias voltages (a) 0 ...

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Figure 10: Bias-dependent (a) CC and (b) SC for N = 32 and E_F = 0.3 eV. The arrows in panel (b) indicate the S...

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Figure 11: Spin-dependent transmission near the Fermi energy for N = 32 and E_F = 0.3 eV at the bias voltages (...

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Figure 12: Bias-dependent (a) molecular eigenlevels and (b) electronic localization of the spin-up LUMO and th...

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Review

Published 13 Sep 2017

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