Low-frequency noise spectroscopy of charge-density-wave phase transitions in vertical quasi-2D 1T-TaS2 devices

Ruben Salgado; Amirmahdi Mohammadzadeh; Fariborz Kargar; Adane K. Geremew; Chun-Yu Huang; Matthew Bloodgood; Sergey Rumyantsev; Tina T. Salguero; Alexander A. Balandin

doi:10.7567/1882-0786/ab0397

Low-frequency noise spectroscopy of charge-density-wave phase transitions in vertical quasi-2D 1T-TaS2 devices

Ruben Salgado
, Amirmahdi Mohammadzadeh
, Fariborz Kargar
, Adane K. Geremew
, Chun-Yu Huang
, Matthew Bloodgood
, Sergey Rumyantsev
, Tina T. Salguero
, Alexander A. Balandin (Corresponding author)

Plasma & Materials Processing

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

32 Citations (Scopus)

Abstract

We report results regarding the electron transport in vertical quasi-two-dimensional (2D) layered 1T-TaS 2 charge-density-wave (CDW) devices. The low-frequency noise spectroscopy was used as a tool to study changes in the cross-plane electrical characteristics of the quasi-2D material below room temperature. The noise spectral density revealed strong peaks - changing by more than an order-of-magnitude - at the temperatures closely matching the electrical resistance steps. Some of the noise peaks appeared below the temperature of the commensurate to nearly-commensurate CDW transition, possibly indicating the presence of the debated hidden phase transitions. These results confirm the potential of the noise spectroscopy for investigations of electron transport and phase transitions in novel materials.

Original language	English
Article number	037001
Number of pages	5
Journal	Applied Physics Express
Volume	12
Issue number	3
DOIs	https://doi.org/10.7567/1882-0786/ab0397
Publication status	Published - Mar 2019

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title = "Low-frequency noise spectroscopy of charge-density-wave phase transitions in vertical quasi-2D 1T-TaS2 devices",

abstract = "We report results regarding the electron transport in vertical quasi-two-dimensional (2D) layered 1T-TaS 2 charge-density-wave (CDW) devices. The low-frequency noise spectroscopy was used as a tool to study changes in the cross-plane electrical characteristics of the quasi-2D material below room temperature. The noise spectral density revealed strong peaks - changing by more than an order-of-magnitude - at the temperatures closely matching the electrical resistance steps. Some of the noise peaks appeared below the temperature of the commensurate to nearly-commensurate CDW transition, possibly indicating the presence of the debated hidden phase transitions. These results confirm the potential of the noise spectroscopy for investigations of electron transport and phase transitions in novel materials.",

author = "Ruben Salgado and Amirmahdi Mohammadzadeh and Fariborz Kargar and Geremew, \{Adane K.\} and Chun-Yu Huang and Matthew Bloodgood and Sergey Rumyantsev and Salguero, \{Tina T.\} and Balandin, \{Alexander A.\}",

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doi = "10.7567/1882-0786/ab0397",

language = "English",

volume = "12",

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T1 - Low-frequency noise spectroscopy of charge-density-wave phase transitions in vertical quasi-2D 1T-TaS2 devices

AU - Salgado, Ruben

AU - Mohammadzadeh, Amirmahdi

AU - Kargar, Fariborz

AU - Geremew, Adane K.

AU - Huang, Chun-Yu

AU - Bloodgood, Matthew

AU - Rumyantsev, Sergey

AU - Salguero, Tina T.

AU - Balandin, Alexander A.

PY - 2019/3

Y1 - 2019/3

N2 - We report results regarding the electron transport in vertical quasi-two-dimensional (2D) layered 1T-TaS 2 charge-density-wave (CDW) devices. The low-frequency noise spectroscopy was used as a tool to study changes in the cross-plane electrical characteristics of the quasi-2D material below room temperature. The noise spectral density revealed strong peaks - changing by more than an order-of-magnitude - at the temperatures closely matching the electrical resistance steps. Some of the noise peaks appeared below the temperature of the commensurate to nearly-commensurate CDW transition, possibly indicating the presence of the debated hidden phase transitions. These results confirm the potential of the noise spectroscopy for investigations of electron transport and phase transitions in novel materials.

AB - We report results regarding the electron transport in vertical quasi-two-dimensional (2D) layered 1T-TaS 2 charge-density-wave (CDW) devices. The low-frequency noise spectroscopy was used as a tool to study changes in the cross-plane electrical characteristics of the quasi-2D material below room temperature. The noise spectral density revealed strong peaks - changing by more than an order-of-magnitude - at the temperatures closely matching the electrical resistance steps. Some of the noise peaks appeared below the temperature of the commensurate to nearly-commensurate CDW transition, possibly indicating the presence of the debated hidden phase transitions. These results confirm the potential of the noise spectroscopy for investigations of electron transport and phase transitions in novel materials.

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U2 - 10.7567/1882-0786/ab0397

DO - 10.7567/1882-0786/ab0397

M3 - Article

SN - 1882-0778

VL - 12

JO - Applied Physics Express

JF - Applied Physics Express

IS - 3

M1 - 037001

ER -

Low-frequency noise spectroscopy of charge-density-wave phase transitions in vertical quasi-2D 1T-TaS2 devices

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