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

S. McKeown Walker; S. Ricco; F. Y. Bruno; A. de la Torre; A. Tamai; E. Golias; A. Varykhalov; D. Marchenko; M. Hoesch; M. S. Bahramy; P. D. C. King; J. Sanchez-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. Ricco, F. Y. Bruno, A. de la Torre, A. Tamai, E. Golias, A. Varykhalov, D. Marchenko, M. Hoesch, M. S. Bahramy, P. D. C. King, J. Sanchez-Barriga, F. Baumberger

Theoretical Physics Group

Research output: Contribution to journal › Article › peer-review

Abstract

We reinvestigate the putative giant spin splitting at the surface of
SrTiO
3
reported by Santander–Syro et al. [Nat. Mater. 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
Journal	Physical Review B
DOIs	https://doi.org/10.1103/PhysRevB.93.245143
Publication status	Published - 22 Jun 2016

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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 SrTiO 3 reported by Santander–Syro et al. [Nat. Mater. 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 = "Walker, \{S. McKeown\} and S. Ricco 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, \{P. D. C.\} and J. Sanchez-Barriga and F. Baumberger",

year = "2016",

month = jun,

day = "22",

doi = "10.1103/PhysRevB.93.245143",

language = "English",

journal = "Physical Review B",

issn = "2469-9969",

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

AU - Walker, S. McKeown

AU - Ricco, 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, P. D. C.

AU - Sanchez-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 SrTiO 3 reported by Santander–Syro et al. [Nat. Mater. 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 SrTiO 3 reported by Santander–Syro et al. [Nat. Mater. 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.

UR - https://www.scopus.com/pages/publications/84976907267

U2 - 10.1103/PhysRevB.93.245143

DO - 10.1103/PhysRevB.93.245143

M3 - Article

SN - 2469-9969

JO - Physical Review B

JF - Physical Review B

ER -

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

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