Controlling charge-density-wave states in nano-thick crystals of 1T-TaS2

Masaro Yoshida; Yijin Zhang; Jianting Ye; Ryuji Suzuki; Yasuhiko Imai; Shigeru Kimura; Akihiko Fujiwara; Yoshihiro Iwasa

doi:10.1038/srep07302

Controlling charge-density-wave states in nano-thick crystals of 1T-TaS2

Masaro Yoshida, Yijin Zhang, Jianting Ye, Ryuji Suzuki, Yasuhiko Imai, Shigeru Kimura, Akihiko Fujiwara, Yoshihiro Iwasa^*

^*Corresponding author for this work

Device Physics of Complex Materials

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

131 Citations (Scopus)

299 Downloads (Pure)

Abstract

Two-dimensional crystals, especially graphene and transition metal dichalcogenides (TMDs), are attracting growing interests because they provide an ideal platform for novel and unconventional electronic band structures derived by thinning. The thinning may also affect collective phenomena of electrons in interacting electron systems and can lead to exotic states beyond the simple band picture. Here, we report the systematic control of charge-density-wave (CDW) transitions by changing thickness, cooling rate and gate voltage in nano-thick crystals of 1T-type tantalum disulfide (1T-TaS2). Particularly the clear cooling rate dependence, which has never been observed in bulk crystals, revealed the nearly-commensurate CDW state in nano-thick crystals is a super-cooled state. The present results demonstrate that, in the two-dimensional crystals with nanometer thickness, the first-order phase transitions are susceptible to various perturbations, suggestive of potential functions of electronic phase control.

Original language	English
Article number	7302
Number of pages	5
Journal	Scientific Reports
Volume	4
DOIs	https://doi.org/10.1038/srep07302
Publication status	Published - 3-Dec-2014

Keywords

TRANSITION-METAL DICHALCOGENIDES
MONOLAYER MOS2
SUPERCONDUCTIVITY
INSULATOR
LOCALIZATION
PHASE

Access to Document

10.1038/srep07302Licence: CC BY

Controlling charge density wave statesFinal publisher's version, 1.18 MBLicence: CC BY

Handle.net

Persistent link

Cite this

@article{4aa7184d4d5b45dd8349600c18b9be88,

title = "Controlling charge-density-wave states in nano-thick crystals of 1T-TaS2",

abstract = "Two-dimensional crystals, especially graphene and transition metal dichalcogenides (TMDs), are attracting growing interests because they provide an ideal platform for novel and unconventional electronic band structures derived by thinning. The thinning may also affect collective phenomena of electrons in interacting electron systems and can lead to exotic states beyond the simple band picture. Here, we report the systematic control of charge-density-wave (CDW) transitions by changing thickness, cooling rate and gate voltage in nano-thick crystals of 1T-type tantalum disulfide (1T-TaS2). Particularly the clear cooling rate dependence, which has never been observed in bulk crystals, revealed the nearly-commensurate CDW state in nano-thick crystals is a super-cooled state. The present results demonstrate that, in the two-dimensional crystals with nanometer thickness, the first-order phase transitions are susceptible to various perturbations, suggestive of potential functions of electronic phase control.",

keywords = "TRANSITION-METAL DICHALCOGENIDES, MONOLAYER MOS2, SUPERCONDUCTIVITY, INSULATOR, LOCALIZATION, PHASE",

author = "Masaro Yoshida and Yijin Zhang and Jianting Ye and Ryuji Suzuki and Yasuhiko Imai and Shigeru Kimura and Akihiko Fujiwara and Yoshihiro Iwasa",

year = "2014",

month = dec,

day = "3",

doi = "10.1038/srep07302",

language = "English",

volume = "4",

journal = "Scientific Reports",

issn = "2045-2322",

publisher = "Nature Publishing Group",

}

TY - JOUR

T1 - Controlling charge-density-wave states in nano-thick crystals of 1T-TaS2

AU - Yoshida, Masaro

AU - Zhang, Yijin

AU - Ye, Jianting

AU - Suzuki, Ryuji

AU - Imai, Yasuhiko

AU - Kimura, Shigeru

AU - Fujiwara, Akihiko

AU - Iwasa, Yoshihiro

PY - 2014/12/3

Y1 - 2014/12/3

N2 - Two-dimensional crystals, especially graphene and transition metal dichalcogenides (TMDs), are attracting growing interests because they provide an ideal platform for novel and unconventional electronic band structures derived by thinning. The thinning may also affect collective phenomena of electrons in interacting electron systems and can lead to exotic states beyond the simple band picture. Here, we report the systematic control of charge-density-wave (CDW) transitions by changing thickness, cooling rate and gate voltage in nano-thick crystals of 1T-type tantalum disulfide (1T-TaS2). Particularly the clear cooling rate dependence, which has never been observed in bulk crystals, revealed the nearly-commensurate CDW state in nano-thick crystals is a super-cooled state. The present results demonstrate that, in the two-dimensional crystals with nanometer thickness, the first-order phase transitions are susceptible to various perturbations, suggestive of potential functions of electronic phase control.

AB - Two-dimensional crystals, especially graphene and transition metal dichalcogenides (TMDs), are attracting growing interests because they provide an ideal platform for novel and unconventional electronic band structures derived by thinning. The thinning may also affect collective phenomena of electrons in interacting electron systems and can lead to exotic states beyond the simple band picture. Here, we report the systematic control of charge-density-wave (CDW) transitions by changing thickness, cooling rate and gate voltage in nano-thick crystals of 1T-type tantalum disulfide (1T-TaS2). Particularly the clear cooling rate dependence, which has never been observed in bulk crystals, revealed the nearly-commensurate CDW state in nano-thick crystals is a super-cooled state. The present results demonstrate that, in the two-dimensional crystals with nanometer thickness, the first-order phase transitions are susceptible to various perturbations, suggestive of potential functions of electronic phase control.

KW - TRANSITION-METAL DICHALCOGENIDES

KW - MONOLAYER MOS2

KW - SUPERCONDUCTIVITY

KW - INSULATOR

KW - LOCALIZATION

KW - PHASE

U2 - 10.1038/srep07302

DO - 10.1038/srep07302

M3 - Article

SN - 2045-2322

VL - 4

JO - Scientific Reports

JF - Scientific Reports

M1 - 7302

ER -

Controlling charge-density-wave states in nano-thick crystals of 1T-TaS2

Abstract

Keywords

Access to Document

Handle.net

Fingerprint

Cite this