Absence of giant spin splitting in the two-dimensional electron liquid at the surface of SrTiO3 (001)

S McKeown Walker; S Riccò; F Y Bruno; A de la Torre; A Tamai; E Golias; A Varykhalov; D Marchenko; M Hoesch; M S Bahramy; Philip David King; J Sánchez-Barriga; F Baumberger

doi:10.1103/PhysRevB.93.245143

Absence of giant spin splitting in the two-dimensional electron liquid at the surface of SrTiO₃ (001)

S McKeown Walker, S Riccò, F Y Bruno, A de la Torre, A Tamai, E Golias, A Varykhalov, D Marchenko, M Hoesch, M S Bahramy, Philip David King, J Sánchez-Barriga, F Baumberger

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Abstract

We reinvestigate the putative giant spin splitting at the surface of SrTiO₃ reported by Santander-Syro et al. [Nature Mat. 13, 1085 (2014)]. Our spin- and angle-resolved photoemission experiments on fractured (001) oriented surfaces supporting a two-dimensional electron liquid with high carrier density show no detectable spin polarization in the photocurrent. We demonstrate that this result excludes a giant spin splitting while it is consistent with the unconventional Rashba-like splitting seen in band structure calculations that reproduce the experimentally observed ladder of quantum confined subbands.

Original language	English
Article number	245143
Number of pages	5
Journal	Physical Review. B, Condensed matter and materials physics
Volume	93
Issue number	24
DOIs	https://doi.org/10.1103/PhysRevB.93.245143
Publication status	Published - 22 Jun 2016

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© 2016, American Physical Society. This work is made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at journals.aps.org / https://dx.doi.org/10.1103/PhysRevB.93.245143
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Royal Society Research Fellowship: Electronic structure engineering of novel topological phases
King, P. (PI)
The Royal Society
1/10/13 → 30/09/18
Project: Fellowship

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McKeown Walker, S., Riccò, S., Bruno, F. Y., de la Torre, A., Tamai, A., Golias, E., Varykhalov, A., Marchenko, D., Hoesch, M., Bahramy, M. S., King, P. D., Sánchez-Barriga, J., & Baumberger, F. (2016). Absence of giant spin splitting in the two-dimensional electron liquid at the surface of SrTiO₃ (001). Physical Review. B, Condensed matter and materials physics, 93(24), Article 245143. https://doi.org/10.1103/PhysRevB.93.245143

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title = "Absence of giant spin splitting in the two-dimensional electron liquid at the surface of SrTiO3 (001)",

abstract = "We reinvestigate the putative giant spin splitting at the surface of SrTiO3 reported by Santander-Syro et al. [Nature Mat. 13, 1085 (2014)]. Our spin- and angle-resolved photoemission experiments on fractured (001) oriented surfaces supporting a two-dimensional electron liquid with high carrier density show no detectable spin polarization in the photocurrent. We demonstrate that this result excludes a giant spin splitting while it is consistent with the unconventional Rashba-like splitting seen in band structure calculations that reproduce the experimentally observed ladder of quantum confined subbands.",

author = "{McKeown Walker}, S and S Ricc{\`o} and Bruno, {F Y} and {de la Torre}, A and A Tamai and E Golias and A Varykhalov and D Marchenko and M Hoesch and Bahramy, {M S} and King, {Philip David} and J S{\'a}nchez-Barriga and F Baumberger",

year = "2016",

month = jun,

day = "22",

doi = "10.1103/PhysRevB.93.245143",

language = "English",

volume = "93",

journal = "Physical Review. B, Condensed matter and materials physics",

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McKeown Walker, S, Riccò, S, Bruno, FY, de la Torre, A, Tamai, A, Golias, E, Varykhalov, A, Marchenko, D, Hoesch, M, Bahramy, MS, King, PD, Sánchez-Barriga, J & Baumberger, F 2016, 'Absence of giant spin splitting in the two-dimensional electron liquid at the surface of SrTiO₃ (001)', Physical Review. B, Condensed matter and materials physics, vol. 93, no. 24, 245143. https://doi.org/10.1103/PhysRevB.93.245143

TY - JOUR

T1 - Absence of giant spin splitting in the two-dimensional electron liquid at the surface of SrTiO3 (001)

AU - McKeown Walker, S

AU - Riccò, S

AU - Bruno, F Y

AU - de la Torre, A

AU - Tamai, A

AU - Golias, E

AU - Varykhalov, A

AU - Marchenko, D

AU - Hoesch, M

AU - Bahramy, M S

AU - King, Philip David

AU - Sánchez-Barriga, J

AU - Baumberger, F

PY - 2016/6/22

Y1 - 2016/6/22

N2 - We reinvestigate the putative giant spin splitting at the surface of SrTiO3 reported by Santander-Syro et al. [Nature Mat. 13, 1085 (2014)]. Our spin- and angle-resolved photoemission experiments on fractured (001) oriented surfaces supporting a two-dimensional electron liquid with high carrier density show no detectable spin polarization in the photocurrent. We demonstrate that this result excludes a giant spin splitting while it is consistent with the unconventional Rashba-like splitting seen in band structure calculations that reproduce the experimentally observed ladder of quantum confined subbands.

AB - We reinvestigate the putative giant spin splitting at the surface of SrTiO3 reported by Santander-Syro et al. [Nature Mat. 13, 1085 (2014)]. Our spin- and angle-resolved photoemission experiments on fractured (001) oriented surfaces supporting a two-dimensional electron liquid with high carrier density show no detectable spin polarization in the photocurrent. We demonstrate that this result excludes a giant spin splitting while it is consistent with the unconventional Rashba-like splitting seen in band structure calculations that reproduce the experimentally observed ladder of quantum confined subbands.

U2 - 10.1103/PhysRevB.93.245143

DO - 10.1103/PhysRevB.93.245143

M3 - Article

SN - 1098-0121

VL - 93

JO - Physical Review. B, Condensed matter and materials physics

JF - Physical Review. B, Condensed matter and materials physics

IS - 24

M1 - 245143

ER -

Absence of giant spin splitting in the two-dimensional electron liquid at the surface of SrTiO3 (001)

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Royal Society Research Fellowship: Electronic structure engineering of novel topological phases

Cite this

Absence of giant spin splitting in the two-dimensional electron liquid at the surface of SrTiO₃ (001)