Scanning tunneling spectroscopy under pulsed spin injection

J. Ngai; Y. C. Tseng; P. Morales; V. Pribiag; J. Y.T. Wei; F. Chen; D. D. Perovic

doi:10.1063/1.1667281

Scanning tunneling spectroscopy under pulsed spin injection

J. Ngai, Y. C. Tseng, P. Morales, V. Pribiag, J. Y.T. Wei, F. Chen, D. D. Perovic

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Abstract

An experimental technique was developed combining cryogenic scanning tunneling spectroscopy (STS) and pulsed quasiparticle spin injection. From spin equilibrium, the spin injection intended to perturb a superconducting thin film and the STS monitored its steady-state quasiparticle spectrum. While being both synchronized and decoupled from the STS circuitry, the pulsed injection circuit was designed to minimize Joule heating. It was found that this technique could be applied to any material that was amenable to spin injection and heteroepitaxial structuring, as a general method for probing local electronic properties under a bulk spin perturbation.

Original language	English (US)
Pages (from-to)	1907-1909
Number of pages	3
Journal	Applied Physics Letters
Volume	84
Issue number	11
DOIs	https://doi.org/10.1063/1.1667281
State	Published - Mar 15 2004
Externally published	Yes

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AU - Ngai, J.

AU - Tseng, Y. C.

AU - Morales, P.

AU - Pribiag, V.

AU - Wei, J. Y.T.

AU - Chen, F.

AU - Perovic, D. D.

PY - 2004/3/15

Y1 - 2004/3/15

N2 - An experimental technique was developed combining cryogenic scanning tunneling spectroscopy (STS) and pulsed quasiparticle spin injection. From spin equilibrium, the spin injection intended to perturb a superconducting thin film and the STS monitored its steady-state quasiparticle spectrum. While being both synchronized and decoupled from the STS circuitry, the pulsed injection circuit was designed to minimize Joule heating. It was found that this technique could be applied to any material that was amenable to spin injection and heteroepitaxial structuring, as a general method for probing local electronic properties under a bulk spin perturbation.

AB - An experimental technique was developed combining cryogenic scanning tunneling spectroscopy (STS) and pulsed quasiparticle spin injection. From spin equilibrium, the spin injection intended to perturb a superconducting thin film and the STS monitored its steady-state quasiparticle spectrum. While being both synchronized and decoupled from the STS circuitry, the pulsed injection circuit was designed to minimize Joule heating. It was found that this technique could be applied to any material that was amenable to spin injection and heteroepitaxial structuring, as a general method for probing local electronic properties under a bulk spin perturbation.

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Scanning tunneling spectroscopy under pulsed spin injection

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