Three- to two-dimensional transition of the electronic structure in CaFe2As2: A parent compound for an iron arsenic high-temperature superconductor

Chang Liu; Takeshi Kondo; Ni Ni; A. D. Palczewski; A. Bostwick; G. D. Samolyuk; R. Khasanov; M. Shi; E. Rotenberg; S. L. Bud'Ko; P. C. Canfield; A. Kaminski

doi:10.1103/PhysRevLett.102.167004

Three- to two-dimensional transition of the electronic structure in CaFe2As2: A parent compound for an iron arsenic high-temperature superconductor

Chang Liu, Takeshi Kondo, Ni Ni, A. D. Palczewski, A. Bostwick, G. D. Samolyuk, R. Khasanov, M. Shi, E. Rotenberg, S. L. Bud'Ko, P. C. Canfield, A. Kaminski

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

78 Scopus citations

Abstract

We use angle-resolved photoemission spectroscopy (ARPES) to study the electronic properties of CaFe2As2-parent compound of a pnictide superconductor. We find that the structural and magnetic transition is accompanied by a three- to two-dimensional (3D-2D) crossover in the electronic structure. Above the transition temperature (Ts) Fermi surfaces around Γ and X points are cylindrical and quasi 2D. Below Ts, the Γ pocket forms a 3D ellipsoid, while the X pocket remains quasi 2D. This finding strongly suggests that low dimensionality plays an important role in understanding the superconducting mechanism in pnictides.

Original language	English
Article number	167004
Journal	Physical Review Letters
Volume	102
Issue number	16
DOIs	https://doi.org/10.1103/PhysRevLett.102.167004
State	Published - Apr 24 2009
Externally published	Yes

Access to Document

10.1103/PhysRevLett.102.167004

Cite this

Liu, C., Kondo, T., Ni, N., Palczewski, A. D., Bostwick, A., Samolyuk, G. D., Khasanov, R., Shi, M., Rotenberg, E., Bud'Ko, S. L., Canfield, P. C., & Kaminski, A. (2009). Three- to two-dimensional transition of the electronic structure in CaFe2As2: A parent compound for an iron arsenic high-temperature superconductor. Physical Review Letters, 102(16), Article 167004. https://doi.org/10.1103/PhysRevLett.102.167004

@article{817f9c46f6744035b672b570564a6c64,

title = "Three- to two-dimensional transition of the electronic structure in CaFe2As2: A parent compound for an iron arsenic high-temperature superconductor",

abstract = "We use angle-resolved photoemission spectroscopy (ARPES) to study the electronic properties of CaFe2As2-parent compound of a pnictide superconductor. We find that the structural and magnetic transition is accompanied by a three- to two-dimensional (3D-2D) crossover in the electronic structure. Above the transition temperature (Ts) Fermi surfaces around Γ and X points are cylindrical and quasi 2D. Below Ts, the Γ pocket forms a 3D ellipsoid, while the X pocket remains quasi 2D. This finding strongly suggests that low dimensionality plays an important role in understanding the superconducting mechanism in pnictides.",

author = "Chang Liu and Takeshi Kondo and Ni Ni and Palczewski, {A. D.} and A. Bostwick and Samolyuk, {G. D.} and R. Khasanov and M. Shi and E. Rotenberg and Bud'Ko, {S. L.} and Canfield, {P. C.} and A. Kaminski",

year = "2009",

month = apr,

day = "24",

doi = "10.1103/PhysRevLett.102.167004",

language = "English",

volume = "102",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "16",

}

Liu, C, Kondo, T, Ni, N, Palczewski, AD, Bostwick, A, Samolyuk, GD, Khasanov, R, Shi, M, Rotenberg, E, Bud'Ko, SL, Canfield, PC & Kaminski, A 2009, 'Three- to two-dimensional transition of the electronic structure in CaFe2As2: A parent compound for an iron arsenic high-temperature superconductor', Physical Review Letters, vol. 102, no. 16, 167004. https://doi.org/10.1103/PhysRevLett.102.167004

TY - JOUR

T1 - Three- to two-dimensional transition of the electronic structure in CaFe2As2

T2 - A parent compound for an iron arsenic high-temperature superconductor

AU - Liu, Chang

AU - Kondo, Takeshi

AU - Ni, Ni

AU - Palczewski, A. D.

AU - Bostwick, A.

AU - Samolyuk, G. D.

AU - Khasanov, R.

AU - Shi, M.

AU - Rotenberg, E.

AU - Bud'Ko, S. L.

AU - Canfield, P. C.

AU - Kaminski, A.

PY - 2009/4/24

Y1 - 2009/4/24

N2 - We use angle-resolved photoemission spectroscopy (ARPES) to study the electronic properties of CaFe2As2-parent compound of a pnictide superconductor. We find that the structural and magnetic transition is accompanied by a three- to two-dimensional (3D-2D) crossover in the electronic structure. Above the transition temperature (Ts) Fermi surfaces around Γ and X points are cylindrical and quasi 2D. Below Ts, the Γ pocket forms a 3D ellipsoid, while the X pocket remains quasi 2D. This finding strongly suggests that low dimensionality plays an important role in understanding the superconducting mechanism in pnictides.

AB - We use angle-resolved photoemission spectroscopy (ARPES) to study the electronic properties of CaFe2As2-parent compound of a pnictide superconductor. We find that the structural and magnetic transition is accompanied by a three- to two-dimensional (3D-2D) crossover in the electronic structure. Above the transition temperature (Ts) Fermi surfaces around Γ and X points are cylindrical and quasi 2D. Below Ts, the Γ pocket forms a 3D ellipsoid, while the X pocket remains quasi 2D. This finding strongly suggests that low dimensionality plays an important role in understanding the superconducting mechanism in pnictides.

UR - http://www.scopus.com/inward/record.url?scp=67650286796&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.102.167004

DO - 10.1103/PhysRevLett.102.167004

M3 - Article

AN - SCOPUS:67650286796

SN - 0031-9007

VL - 102

JO - Physical Review Letters

JF - Physical Review Letters

IS - 16

M1 - 167004

ER -

Three- to two-dimensional transition of the electronic structure in CaFe2As2: A parent compound for an iron arsenic high-temperature superconductor

Abstract

Access to Document

Other files and links

Fingerprint

Cite this