Quantitative inverse spin Hall effect detection via precise control of the driving-field amplitude

Kavand, Marzieh; Zhang, Chong; Sun, Dali; Malissa, H.; Vardeny, Z. Valy; Boehme, Christoph

doi:10.1103/physrevb.95.161406

Cited by 8 publications

(7 citation statements)

References 21 publications

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“…These orientations correspond to the condition for which spin-pumping from the ferromagnet into the organic semiconductor occurs. 22 The strength of the driving field, $ 1 , was measured independently as 0.615 mT at an orientation of 0° and 0.595 mT at 180° for a MW pulse power of 1000 W, 25 which is the maximum nominal output power of the travelling-wave tube amplifier used for these experiments.…”

Section: Resultsmentioning

confidence: 99%

Perdeuteration of poly[2-methoxy-5-(2′-ethylhexyloxy)-1,4-phenylenevinylene] (d-MEH-PPV): control of microscopic charge-carrier spin–spin coupling and of magnetic-field effects in optoelectronic devices

et al. 2020

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Section: Resultsmentioning

confidence: 99%

Perdeuteration of poly[2-methoxy-5-(2′-ethylhexyloxy)-1,4-phenylenevinylene] (d-MEH-PPV): control of microscopic charge-carrier spin–spin coupling and of magnetic-field effects in optoelectronic devices

et al. 2020

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“…Two types of PEDOT:PSS films were investigated: a low conductivity PEDOT:PSS (Al4083 with σ ~ 10 −3 S cm −1 ) and a high conductivity PEDOT:PSS (PH1000 with σ ~ 300 S cm −1 ). Using the recently developed pulsed spin-pumping method [19,20], we were able to observe subtle spin-to-charge conversions in these two types of PEDOT:PSS films, characterized by a pulsed inverse spin Hall (ISHE) response. We found that the pulsed ISHE response reverses polarity in the low conductivity PEDOT:PSS film at low temperature compared with that at room temperature, while the polarity of ISHE response in the high conductivity PEDOT:PSS film remains unchanged between two temperatures.…”

Section: Introductionmentioning

confidence: 99%

Sign reversal of magnetoresistance and inverse spin Hall effect in doped conducting polymers

Sun

Zhai

Schooten

et al. 2018

J. Phys.: Condens. Matter

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Conducting polymers, where pristine polymers are doped by active dopants, have been used in a variety of flexible optoelectronic device applications due to their tunable conductivity values. Charge transport in these materials has been intensively studied for over three decades. However, spin transport properties in these compounds have remained elusive. Here, we studied two polaron-dominated and trap-dominated spin transport processes in two types of PEDOT:PSS polymers that are lightly and heavily doped, respectively. Using pulsed spin-pumping and spin-injection techniques, we found the sign of inverse spin Hall effect and magnetoresistance obtained from the lightly doped PEDOT:PSS film can reverse its polarity as a function of temperature and applied bias, in contrast to that in the heavily doped PEDOT:PSS film. Our work provides an alternative approach for studying the spin transport in conducting polymer films.

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“…For the description of some of these materials' physical behavior, including their magnetoresistance, luminescence, and permeability 1,[8][9][10] , it is a reasonable assumption to consider SOC to be negligible 5 . In contrast to this, however, there are other material properties such as high-field magneto-optoelectronic characteristics 11,12 , spin lifetimes 12,13 , and spin diffusion lengths 1,4 , the inverse spin-Hall effect [14][15][16][17] or the general spin statistics of organic light-emitting diodes (OLEDs), which determine overall OLED efficiency, where this assumption leads to incorrect predictions. Furthermore, the study of the influence of SOC on paramagnetic states-i.…”

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confidence: 99%

Revealing weak spin-orbit coupling effects on charge carriers in a π -conjugated polymer

et al. 2018

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We measure electrically detected magnetic resonance (EDMR) on organic light-emitting diodes (OLEDs) made of the polymer poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) at room temperature and high magnetic fields, where spectral broadening of the resonance due to spin-orbit coupling (SOC) exceeds that due to the local hyperfine fields. Density-functionaltheory calculations on an open-shell model of the material reveal g-tensors of charge-carrier spins in the lowest unoccupied (electron) and highest occupied (hole) molecular orbitals. These tensors are used for simulations of magnetic resonance line-shapes. Besides providing the first quantification and direct observation of SOC effects on charge-carrier states in these weakly SO-coupled hydrocarbons, this procedure demonstrates that spin-related phenomena in these materials are fundamentally monomolecular in nature.

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Quantitative inverse spin Hall effect detection via precise control of the driving-field amplitude

Cited by 8 publications

References 21 publications

Perdeuteration of poly[2-methoxy-5-(2′-ethylhexyloxy)-1,4-phenylenevinylene] (d-MEH-PPV): control of microscopic charge-carrier spin–spin coupling and of magnetic-field effects in optoelectronic devices

Perdeuteration of poly[2-methoxy-5-(2′-ethylhexyloxy)-1,4-phenylenevinylene] (d-MEH-PPV): control of microscopic charge-carrier spin–spin coupling and of magnetic-field effects in optoelectronic devices

Sign reversal of magnetoresistance and inverse spin Hall effect in doped conducting polymers

Revealing weak spin-orbit coupling effects on charge carriers in a π -conjugated polymer

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