A novel Hall circuit design that can be incorporated into a working electrode, which is used to probe spin-selective charge transfer and charge displacement processes, is reviewed herein. The general design of a Hall circuit based on a semiconductor heterostructure, which forms a shallow 2D electron gas and is used as an electrode, is described. Three different types of spin-selective processes have been studied with this device in the past: i) photoinduced charge exchange between quantum dots and the working electrode through chiral molecules is associated with spin polarization that creates a local magnetization and generates a Hall voltage; ii) charge polarization of chiral molecules by an applied voltage is accompanied by a spin polarization that generates a Hall voltage; and iii) cyclic voltammetry (current–voltage) measurements of electrochemical redox reactions that can be spin-analyzed by the Hall circuit to provide a third dimension (spin) in addition to the well-known current and voltage dimensions. The three studies reviewed open new doors into understanding both the spin current and the charge current in electronic materials and electrochemical processes.

Spin-Dependent Processes Measured without a Permanent Magnet / Fontanesi, C.; Capua, E.; Paltiel, Y.; Waldeck, D. H.; Naaman, R.. - In: ADVANCED MATERIALS. - ISSN 0935-9648. - 30:41(2018), pp. e1707390-e1707395. [10.1002/adma.201707390]

Spin-Dependent Processes Measured without a Permanent Magnet

Fontanesi C.;
2018

Abstract

A novel Hall circuit design that can be incorporated into a working electrode, which is used to probe spin-selective charge transfer and charge displacement processes, is reviewed herein. The general design of a Hall circuit based on a semiconductor heterostructure, which forms a shallow 2D electron gas and is used as an electrode, is described. Three different types of spin-selective processes have been studied with this device in the past: i) photoinduced charge exchange between quantum dots and the working electrode through chiral molecules is associated with spin polarization that creates a local magnetization and generates a Hall voltage; ii) charge polarization of chiral molecules by an applied voltage is accompanied by a spin polarization that generates a Hall voltage; and iii) cyclic voltammetry (current–voltage) measurements of electrochemical redox reactions that can be spin-analyzed by the Hall circuit to provide a third dimension (spin) in addition to the well-known current and voltage dimensions. The three studies reviewed open new doors into understanding both the spin current and the charge current in electronic materials and electrochemical processes.
7-mag-2018
30
41
e1707390
e1707395
Spin-Dependent Processes Measured without a Permanent Magnet / Fontanesi, C.; Capua, E.; Paltiel, Y.; Waldeck, D. H.; Naaman, R.. - In: ADVANCED MATERIALS. - ISSN 0935-9648. - 30:41(2018), pp. e1707390-e1707395. [10.1002/adma.201707390]
Fontanesi, C.; Capua, E.; Paltiel, Y.; Waldeck, D. H.; Naaman, R.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11380/1181721
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