Tunable polaronic conduction in anatase TiO2

S. Moser; L. Moreschini; J. Jaćimović; O. S. Barišić; H. Berger; A. Magrez; Y. J. Chang; K. S. Kim; A. Bostwick; E. Rotenberg; L. Forró; M. Grioni

doi:10.1103/PhysRevLett.110.196403

Tunable polaronic conduction in anatase TiO₂

S. Moser, L. Moreschini, J. Jaćimović, O. S. Barišić, H. Berger, A. Magrez, Y. J. Chang, K. S. Kim, A. Bostwick, E. Rotenberg, L. Forró, M. Grioni

Department of Physics

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

221 Citations (Scopus)

Abstract

Oxygen vacancies created in anatase TiO₂ by UV photons (80-130 eV) provide an effective electron-doping mechanism and induce a hitherto unobserved dispersive metallic state. Angle resolved photoemission reveals that the quasiparticles are large polarons. These results indicate that anatase can be tuned from an insulator to a polaron gas to a weakly correlated metal as a function of doping and clarify the nature of conductivity in this material.

Original language	English
Article number	196403
Journal	Physical review letters
Volume	110
Issue number	19
DOIs	https://doi.org/10.1103/PhysRevLett.110.196403
Publication status	Published - 2013 May 7

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

Access to Document

10.1103/PhysRevLett.110.196403

Cite this

@article{a398d18391344f6b8bf19587c0547875,

title = "Tunable polaronic conduction in anatase TiO2",

abstract = "Oxygen vacancies created in anatase TiO2 by UV photons (80-130 eV) provide an effective electron-doping mechanism and induce a hitherto unobserved dispersive metallic state. Angle resolved photoemission reveals that the quasiparticles are large polarons. These results indicate that anatase can be tuned from an insulator to a polaron gas to a weakly correlated metal as a function of doping and clarify the nature of conductivity in this material.",

author = "S. Moser and L. Moreschini and J. Ja{\'c}imovi{\'c} and Bari{\v s}i{\'c}, {O. S.} and H. Berger and A. Magrez and Chang, {Y. J.} and Kim, {K. S.} and A. Bostwick and E. Rotenberg and L. Forr{\'o} and M. Grioni",

year = "2013",

month = may,

day = "7",

doi = "10.1103/PhysRevLett.110.196403",

language = "English",

volume = "110",

journal = "Physical review letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "19",

}

TY - JOUR

T1 - Tunable polaronic conduction in anatase TiO2

AU - Moser, S.

AU - Moreschini, L.

AU - Jaćimović, J.

AU - Barišić, O. S.

AU - Berger, H.

AU - Magrez, A.

AU - Chang, Y. J.

AU - Kim, K. S.

AU - Bostwick, A.

AU - Rotenberg, E.

AU - Forró, L.

AU - Grioni, M.

PY - 2013/5/7

Y1 - 2013/5/7

N2 - Oxygen vacancies created in anatase TiO2 by UV photons (80-130 eV) provide an effective electron-doping mechanism and induce a hitherto unobserved dispersive metallic state. Angle resolved photoemission reveals that the quasiparticles are large polarons. These results indicate that anatase can be tuned from an insulator to a polaron gas to a weakly correlated metal as a function of doping and clarify the nature of conductivity in this material.

AB - Oxygen vacancies created in anatase TiO2 by UV photons (80-130 eV) provide an effective electron-doping mechanism and induce a hitherto unobserved dispersive metallic state. Angle resolved photoemission reveals that the quasiparticles are large polarons. These results indicate that anatase can be tuned from an insulator to a polaron gas to a weakly correlated metal as a function of doping and clarify the nature of conductivity in this material.

UR - http://www.scopus.com/inward/record.url?scp=84877359093&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84877359093&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.110.196403

DO - 10.1103/PhysRevLett.110.196403

M3 - Article

AN - SCOPUS:84877359093

SN - 0031-9007

VL - 110

JO - Physical review letters

JF - Physical review letters

IS - 19

M1 - 196403

ER -

Tunable polaronic conduction in anatase TiO₂

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this