Important roles of Te 5p and Ir 5d spin-orbit interactions on the multi-band electronic structure of triangular lattice superconductor Ir<inf>1-x</inf>Pt<inf>x</inf>Te<inf>2</inf>

Daiki Ootsuki, Tatsuya Toriyama, Masakazu Kobayashi, Sunseng Pyon, Kazutaka Kudo, Minoru Nohara, Takuya Sugimoto, Teppei Yoshida, Masafumi Horio, Atsushi Fujimori, Masashi Arita, Hiroaki Anzai, Hirofumi Namatame, Masaki Taniguchi, Naurang L. Saini, Takehisa Konishi, Yukinori Ohta, Takashi Mizokawa

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

We report an angle-resolved photoemission spectroscopy (ARPES) study on a triangular lattice superconductor Ir<inf>1-x</inf>Pt<inf>x</inf>Te<inf>2</inf> in which the Ir-Ir or Te-Te bond formation, the band Jahn-Teller effect, and the spin-orbit interaction are cooperating and competing with one another. The Fermi surfaces of the substituted system are qualitatively similar to the band structure calculations for the undistorted IrTe<inf>2</inf> with an upward chemical potential shift due to electron doping. A combination of the ARPES and the band structure calculations indicates that the Te 5p spin-orbit interaction removes the p<inf>x</inf>/p<inf>y</inf> orbital degeneracy and induces p<inf>x</inf> ± ip<inf>y</inf> type spin-orbit coupling near the A point. The inner and outer Fermi surfaces are entangled by the Te 5p and Ir 5d spin-orbit interactions which may provide exotic superconductivity with singlet-triplet mixing.

Original languageEnglish
Article number033704
JournalJournal of the Physical Society of Japan
Volume83
Issue number3
DOIs
Publication statusPublished - 2014 Mar 15
Externally publishedYes

Fingerprint

spin-orbit interactions
electronic structure
Fermi surfaces
photoelectric emission
Jahn-Teller effect
spectroscopy
superconductivity
orbits
orbitals
shift
electrons

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Important roles of Te 5p and Ir 5d spin-orbit interactions on the multi-band electronic structure of triangular lattice superconductor Ir<inf>1-x</inf>Pt<inf>x</inf>Te<inf>2</inf> / Ootsuki, Daiki; Toriyama, Tatsuya; Kobayashi, Masakazu; Pyon, Sunseng; Kudo, Kazutaka; Nohara, Minoru; Sugimoto, Takuya; Yoshida, Teppei; Horio, Masafumi; Fujimori, Atsushi; Arita, Masashi; Anzai, Hiroaki; Namatame, Hirofumi; Taniguchi, Masaki; Saini, Naurang L.; Konishi, Takehisa; Ohta, Yukinori; Mizokawa, Takashi.

In: Journal of the Physical Society of Japan, Vol. 83, No. 3, 033704, 15.03.2014.

Research output: Contribution to journalArticle

Ootsuki, D, Toriyama, T, Kobayashi, M, Pyon, S, Kudo, K, Nohara, M, Sugimoto, T, Yoshida, T, Horio, M, Fujimori, A, Arita, M, Anzai, H, Namatame, H, Taniguchi, M, Saini, NL, Konishi, T, Ohta, Y & Mizokawa, T 2014, 'Important roles of Te 5p and Ir 5d spin-orbit interactions on the multi-band electronic structure of triangular lattice superconductor Ir<inf>1-x</inf>Pt<inf>x</inf>Te<inf>2</inf>', Journal of the Physical Society of Japan, vol. 83, no. 3, 033704. https://doi.org/10.7566/JPSJ.83.033704
Ootsuki, Daiki ; Toriyama, Tatsuya ; Kobayashi, Masakazu ; Pyon, Sunseng ; Kudo, Kazutaka ; Nohara, Minoru ; Sugimoto, Takuya ; Yoshida, Teppei ; Horio, Masafumi ; Fujimori, Atsushi ; Arita, Masashi ; Anzai, Hiroaki ; Namatame, Hirofumi ; Taniguchi, Masaki ; Saini, Naurang L. ; Konishi, Takehisa ; Ohta, Yukinori ; Mizokawa, Takashi. / Important roles of Te 5p and Ir 5d spin-orbit interactions on the multi-band electronic structure of triangular lattice superconductor Ir<inf>1-x</inf>Pt<inf>x</inf>Te<inf>2</inf>. In: Journal of the Physical Society of Japan. 2014 ; Vol. 83, No. 3.
@article{7b26c4d2a85a4f989aa328b77518d90e,
title = "Important roles of Te 5p and Ir 5d spin-orbit interactions on the multi-band electronic structure of triangular lattice superconductor Ir1-xPtxTe2",
abstract = "We report an angle-resolved photoemission spectroscopy (ARPES) study on a triangular lattice superconductor Ir1-xPtxTe2 in which the Ir-Ir or Te-Te bond formation, the band Jahn-Teller effect, and the spin-orbit interaction are cooperating and competing with one another. The Fermi surfaces of the substituted system are qualitatively similar to the band structure calculations for the undistorted IrTe2 with an upward chemical potential shift due to electron doping. A combination of the ARPES and the band structure calculations indicates that the Te 5p spin-orbit interaction removes the px/py orbital degeneracy and induces px ± ipy type spin-orbit coupling near the A point. The inner and outer Fermi surfaces are entangled by the Te 5p and Ir 5d spin-orbit interactions which may provide exotic superconductivity with singlet-triplet mixing.",
author = "Daiki Ootsuki and Tatsuya Toriyama and Masakazu Kobayashi and Sunseng Pyon and Kazutaka Kudo and Minoru Nohara and Takuya Sugimoto and Teppei Yoshida and Masafumi Horio and Atsushi Fujimori and Masashi Arita and Hiroaki Anzai and Hirofumi Namatame and Masaki Taniguchi and Saini, {Naurang L.} and Takehisa Konishi and Yukinori Ohta and Takashi Mizokawa",
year = "2014",
month = "3",
day = "15",
doi = "10.7566/JPSJ.83.033704",
language = "English",
volume = "83",
journal = "Journal of the Physical Society of Japan",
issn = "0031-9015",
publisher = "Physical Society of Japan",
number = "3",

}

TY - JOUR

T1 - Important roles of Te 5p and Ir 5d spin-orbit interactions on the multi-band electronic structure of triangular lattice superconductor Ir1-xPtxTe2

AU - Ootsuki, Daiki

AU - Toriyama, Tatsuya

AU - Kobayashi, Masakazu

AU - Pyon, Sunseng

AU - Kudo, Kazutaka

AU - Nohara, Minoru

AU - Sugimoto, Takuya

AU - Yoshida, Teppei

AU - Horio, Masafumi

AU - Fujimori, Atsushi

AU - Arita, Masashi

AU - Anzai, Hiroaki

AU - Namatame, Hirofumi

AU - Taniguchi, Masaki

AU - Saini, Naurang L.

AU - Konishi, Takehisa

AU - Ohta, Yukinori

AU - Mizokawa, Takashi

PY - 2014/3/15

Y1 - 2014/3/15

N2 - We report an angle-resolved photoemission spectroscopy (ARPES) study on a triangular lattice superconductor Ir1-xPtxTe2 in which the Ir-Ir or Te-Te bond formation, the band Jahn-Teller effect, and the spin-orbit interaction are cooperating and competing with one another. The Fermi surfaces of the substituted system are qualitatively similar to the band structure calculations for the undistorted IrTe2 with an upward chemical potential shift due to electron doping. A combination of the ARPES and the band structure calculations indicates that the Te 5p spin-orbit interaction removes the px/py orbital degeneracy and induces px ± ipy type spin-orbit coupling near the A point. The inner and outer Fermi surfaces are entangled by the Te 5p and Ir 5d spin-orbit interactions which may provide exotic superconductivity with singlet-triplet mixing.

AB - We report an angle-resolved photoemission spectroscopy (ARPES) study on a triangular lattice superconductor Ir1-xPtxTe2 in which the Ir-Ir or Te-Te bond formation, the band Jahn-Teller effect, and the spin-orbit interaction are cooperating and competing with one another. The Fermi surfaces of the substituted system are qualitatively similar to the band structure calculations for the undistorted IrTe2 with an upward chemical potential shift due to electron doping. A combination of the ARPES and the band structure calculations indicates that the Te 5p spin-orbit interaction removes the px/py orbital degeneracy and induces px ± ipy type spin-orbit coupling near the A point. The inner and outer Fermi surfaces are entangled by the Te 5p and Ir 5d spin-orbit interactions which may provide exotic superconductivity with singlet-triplet mixing.

UR - http://www.scopus.com/inward/record.url?scp=84897893580&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84897893580&partnerID=8YFLogxK

U2 - 10.7566/JPSJ.83.033704

DO - 10.7566/JPSJ.83.033704

M3 - Article

VL - 83

JO - Journal of the Physical Society of Japan

JF - Journal of the Physical Society of Japan

SN - 0031-9015

IS - 3

M1 - 033704

ER -