Fermi surface and superconducting gap of 2H-NbSe2 using low-temperature ultrahigh-resolution angle-resolved photoemission spectroscopy

Takayuki Kiss; Takayoshi Yokoya; Ashish Chainani; Shik Shin; Minoru Nohara; Hidenori Takagi

doi:10.1016/S0921-4526(01)01293-5

Fermi surface and superconducting gap of 2H-NbSe₂ using low-temperature ultrahigh-resolution angle-resolved photoemission spectroscopy

Takayuki Kiss, Takayoshi Yokoya, Ashish Chainani, Shik Shin, Minoru Nohara, Hidenori Takagi

Research output: Contribution to journal › Conference article › peer-review

16 Citations (Scopus)

Abstract

We have studied the Fermi surface (FS) and superconducting gap of 2H-NbSe₂, using angle-resolved photoemission spectroscopy with an energy resolution of 2.2 meV and an angle resolution of ±0.13°. We succeeded in distinguishing all FS sheets predicted from band calculations and found that the observed hexagonal Fermi surface nesting vector centered at the Γ point is larger than the CDW nesting vector reported from neutron diffraction measurements. Furthermore, a superconducting gap at one FS sheet is successfully observed.

Original language	English
Pages (from-to)	666-667
Number of pages	2
Journal	Physica B: Condensed Matter
Volume	312-313
DOIs	https://doi.org/10.1016/S0921-4526(01)01293-5
Publication status	Published - Mar 1 2002
Externally published	Yes
Event	International Conference on Strongly Correlated Electrons - Ann Arbor, MI, United States Duration: Aug 6 2002 → Aug 6 2002

Keywords

ARPES
Fermi surface
Superconducting gap

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

Access to Document

10.1016/S0921-4526(01)01293-5

Cite this

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title = "Fermi surface and superconducting gap of 2H-NbSe2 using low-temperature ultrahigh-resolution angle-resolved photoemission spectroscopy",

abstract = "We have studied the Fermi surface (FS) and superconducting gap of 2H-NbSe2, using angle-resolved photoemission spectroscopy with an energy resolution of 2.2 meV and an angle resolution of ±0.13°. We succeeded in distinguishing all FS sheets predicted from band calculations and found that the observed hexagonal Fermi surface nesting vector centered at the Γ point is larger than the CDW nesting vector reported from neutron diffraction measurements. Furthermore, a superconducting gap at one FS sheet is successfully observed.",

keywords = "ARPES, Fermi surface, Superconducting gap",

author = "Takayuki Kiss and Takayoshi Yokoya and Ashish Chainani and Shik Shin and Minoru Nohara and Hidenori Takagi",

year = "2002",

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doi = "10.1016/S0921-4526(01)01293-5",

language = "English",

volume = "312-313",

pages = "666--667",

journal = "Physica B: Condensed Matter",

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note = "International Conference on Strongly Correlated Electrons ; Conference date: 06-08-2002 Through 06-08-2002",

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TY - JOUR

T1 - Fermi surface and superconducting gap of 2H-NbSe2 using low-temperature ultrahigh-resolution angle-resolved photoemission spectroscopy

AU - Kiss, Takayuki

AU - Yokoya, Takayoshi

AU - Chainani, Ashish

AU - Shin, Shik

AU - Nohara, Minoru

AU - Takagi, Hidenori

PY - 2002/3/1

Y1 - 2002/3/1

N2 - We have studied the Fermi surface (FS) and superconducting gap of 2H-NbSe2, using angle-resolved photoemission spectroscopy with an energy resolution of 2.2 meV and an angle resolution of ±0.13°. We succeeded in distinguishing all FS sheets predicted from band calculations and found that the observed hexagonal Fermi surface nesting vector centered at the Γ point is larger than the CDW nesting vector reported from neutron diffraction measurements. Furthermore, a superconducting gap at one FS sheet is successfully observed.

AB - We have studied the Fermi surface (FS) and superconducting gap of 2H-NbSe2, using angle-resolved photoemission spectroscopy with an energy resolution of 2.2 meV and an angle resolution of ±0.13°. We succeeded in distinguishing all FS sheets predicted from band calculations and found that the observed hexagonal Fermi surface nesting vector centered at the Γ point is larger than the CDW nesting vector reported from neutron diffraction measurements. Furthermore, a superconducting gap at one FS sheet is successfully observed.

KW - ARPES

KW - Fermi surface

KW - Superconducting gap

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U2 - 10.1016/S0921-4526(01)01293-5

DO - 10.1016/S0921-4526(01)01293-5

M3 - Conference article

AN - SCOPUS:0036503399

SN - 0921-4526

VL - 312-313

SP - 666

EP - 667

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

T2 - International Conference on Strongly Correlated Electrons

Y2 - 6 August 2002 through 6 August 2002

ER -