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Рыбаченко, В. И.; Chotii, K. Yu.; Kovalenko, V. V.; Schroeder, H.

doi:10.1023/a:1012377922986

Cited by 10 publications

(9 citation statements)

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“…5) we estimated the basicities of compounds Ii and Ij (1.00 and 1.46, respectively). Note that our pK BH + value for N-oxide Ij quite well agrees with the value of 1.43 in [20].…”

Section: Metal Porphyrins Of Synthetic and Natural Originsupporting

confidence: 88%

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Extra Coordination of Zn-Tetraphenylporphine with Pyridine, Quinoline, and Acridine N-Oxides

et al. 2005

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The log K values of zinc tetraphenylporphine (Zn3TPhP) complexes with pyridine, quinoline, and acridine N-oxides and with their nonoxidized analogs, as well as the positions of absorption maxima of the complexes with respect to Zn3TPhP linearly depend on the pK BH + of the ligands in water (methanol, acetonitrile, nitromethane, and acetone) and on Hammett s constants in the absence of steric effects.

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“…5) we estimated the basicities of compounds Ii and Ij (1.00 and 1.46, respectively). Note that our pK BH + value for N-oxide Ij quite well agrees with the value of 1.43 in [20].…”

Section: Metal Porphyrins Of Synthetic and Natural Originsupporting

confidence: 88%

“…Compound Ij is known to show extremely unusual properties in reaction with Broensted3Lowry acids: It takes up the first proton to the amino group (pK BH + 4.30) and the second proton, to the oxygen atom of the N6O group (pK BH + 1.43) [20]. However, for …”

Section: Metal Porphyrins Of Synthetic and Natural Originmentioning

confidence: 99%

Extra Coordination of Zn-Tetraphenylporphine with Pyridine, Quinoline, and Acridine N-Oxides

et al. 2005

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“…The original approach to the problem, which leads to the so-called Wigner-Eisenbad time delay, or the phase time, relies on following the centre of mass of the scattered wavepacket, [8,9,11,12] and has been shown to be equivalent to a weak measurement experiment [13]. A different method was proposed by Baz' [14,15,16,17] who considered a particle weakly coupled to a Larmor clock. Baz' criticised the phase time of Smith [12] as generally incorrect and pointed out that elastic collision time must be a sharply defined quantity [15,17].…”

Section: Introductionmentioning

confidence: 99%

Weak values, “negative probability,” and the uncertainty principle

Sokolovski

2007

Phys. Rev. A

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A quantum transition can be seen as a result of interference between various pathways (e.g.Feynman paths) which can be labelled by a variable f . An attempt to determine the value of f without destroying the coherence between the pathways produces the weak value off . We showf to be an average obtained with amplitude distribution which can, in general, take negative values which, in accordance with the uncertainty principle, need not contain information about the actual range of f which contribute to the transition. It is also demonstrated that the moments of such alternating distributions have a number of unusual properties which may lead to misinterpretation of the weak measurement results. We provide a detailed analysis of weak measurements with and without post-selection. Examples include the double slit diffraction experiment, weak von Neumann and von Neumann-like measurements, traversal time for an elastic collision, the phase time, the local angular momentum (LAM) and the 'three-box case' of Aharonov et al.

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“…Similar to the scattering problem of propagating wave packets, the question of the tunneling time for the decay of a metastable system [16][17][18][19][20] may also be posed. The spin-dependent effects based on the Larmor clock concept for potential barriers [21,22], Hartman effect in graphene [23], and effective exchange fields in semiconductors [24] can provide a measure of this time. In classically forbidden regions there is not only precession but also a rotation of the magnetic moment into the magnetic field direction and the time of the interaction with the barrier is closely related to this rotation [25,26].…”

Section: Introductionmentioning

confidence: 99%

Spin dynamics in tunneling decay of a metastable state

Ban

Sherman

2012

Phys. Rev. A

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We analyze spin dynamics in the tunneling decay of a metastable localized state in the presence of spin-orbit coupling. We find that the spin polarization at short time scales is affected by the initial state while at long time scales both the probability- and the spin density exhibit diffraction-in-time phenomenon. We find that in addition to the tunneling time the tunneling in general can be characterized by a new parameter, the tunneling length. Although the tunneling length is independent on the spin-orbit coupling, it can be accessed by the spin rotation measurement.Comment: 6 pages, 7 figure

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Cited by 10 publications

References 0 publications

Extra Coordination of Zn-Tetraphenylporphine with Pyridine, Quinoline, and Acridine N-Oxides

Extra Coordination of Zn-Tetraphenylporphine with Pyridine, Quinoline, and Acridine N-Oxides

Weak values, “negative probability,” and the uncertainty principle

Spin dynamics in tunneling decay of a metastable state

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