Appearance of a domain structure and its electronic states in iron doped 1T-TaS2 observed using scanning tunneling microscopy and spectroscopy

Yuita Fujisawa; Tatsunari Shimabukuro; Hiroyuki Kojima; Kai Kobayashi; Shun Ohta; Tadashi Machida; Satoshi Demura; Hideaki Sakata

doi:10.7566/JPSJ.86.113703

Appearance of a domain structure and its electronic states in iron doped 1T-TaS₂ observed using scanning tunneling microscopy and spectroscopy

Yuita Fujisawa, Tatsunari Shimabukuro, Hiroyuki Kojima, Kai Kobayashi, Shun Ohta, Tadashi Machida, Satoshi Demura, Hideaki Sakata

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

10 Citations (Scopus)

Abstract

In this paper, we report on scanning tunneling microscopy and spectroscopy (STM/STS) measurements on iron doped 1T-Ta_1-xFe_xS₂. A novel domain structure composed of the domains with localized nature divided by the walls is observed in Ta_0.99Fe_0.01S₂, where the Mott transition is completely suppressed. This indicates that the melting of the Mott state accompanies the appearance of the domain structure. Since the number of walls increase in superconducting Ta_0.98Fe_0.02S₂, the domain walls seem to be responsible for superconductivity in iron doped 1T-TaS₂.

Original language	English
Article number	113703
Journal	Journal of the Physical Society of Japan
Volume	86
Issue number	11
DOIs	https://doi.org/10.7566/JPSJ.86.113703
Publication status	Published - 15 Nov 2017
Externally published	Yes

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title = "Appearance of a domain structure and its electronic states in iron doped 1T-TaS2 observed using scanning tunneling microscopy and spectroscopy",

abstract = "In this paper, we report on scanning tunneling microscopy and spectroscopy (STM/STS) measurements on iron doped 1T-Ta1-xFexS2. A novel domain structure composed of the domains with localized nature divided by the walls is observed in Ta0.99Fe0.01S2, where the Mott transition is completely suppressed. This indicates that the melting of the Mott state accompanies the appearance of the domain structure. Since the number of walls increase in superconducting Ta0.98Fe0.02S2, the domain walls seem to be responsible for superconductivity in iron doped 1T-TaS2.",

author = "Yuita Fujisawa and Tatsunari Shimabukuro and Hiroyuki Kojima and Kai Kobayashi and Shun Ohta and Tadashi Machida and Satoshi Demura and Hideaki Sakata",

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T1 - Appearance of a domain structure and its electronic states in iron doped 1T-TaS2 observed using scanning tunneling microscopy and spectroscopy

AU - Fujisawa, Yuita

AU - Shimabukuro, Tatsunari

AU - Kojima, Hiroyuki

AU - Kobayashi, Kai

AU - Ohta, Shun

AU - Machida, Tadashi

AU - Demura, Satoshi

AU - Sakata, Hideaki

PY - 2017/11/15

Y1 - 2017/11/15

N2 - In this paper, we report on scanning tunneling microscopy and spectroscopy (STM/STS) measurements on iron doped 1T-Ta1-xFexS2. A novel domain structure composed of the domains with localized nature divided by the walls is observed in Ta0.99Fe0.01S2, where the Mott transition is completely suppressed. This indicates that the melting of the Mott state accompanies the appearance of the domain structure. Since the number of walls increase in superconducting Ta0.98Fe0.02S2, the domain walls seem to be responsible for superconductivity in iron doped 1T-TaS2.

AB - In this paper, we report on scanning tunneling microscopy and spectroscopy (STM/STS) measurements on iron doped 1T-Ta1-xFexS2. A novel domain structure composed of the domains with localized nature divided by the walls is observed in Ta0.99Fe0.01S2, where the Mott transition is completely suppressed. This indicates that the melting of the Mott state accompanies the appearance of the domain structure. Since the number of walls increase in superconducting Ta0.98Fe0.02S2, the domain walls seem to be responsible for superconductivity in iron doped 1T-TaS2.

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SN - 0031-9015

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JO - Journal of the Physical Society of Japan

JF - Journal of the Physical Society of Japan

IS - 11

M1 - 113703

ER -

Appearance of a domain structure and its electronic states in iron doped 1T-TaS₂ observed using scanning tunneling microscopy and spectroscopy

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