Gap-like feature in the normal state of X(Fe1-xCo x)2As2, X = Ba, Sr and Fe1+yTe revealed by point contact spectroscopy

H. Z. Arham; C. R. Hunt; W. K. Park; J. Gillett; S. D. Das; S. E. Sebastian; Z. J. Xu; J. S. Wen; Z. W. Lin; Q. Li; G. Gu; A. Thaler; S. L. Budko; P. C. Canfield; L. H. Greene

doi:10.1088/1742-6596/400/2/022001

Gap-like feature in the normal state of X(Fe_1-xCo _x)₂As₂, X = Ba, Sr and Fe_1+yTe revealed by point contact spectroscopy

H. Z. Arham
, C. R. Hunt
, W. K. Park
, J. Gillett
, S. D. Das
, S. E. Sebastian
, Z. J. Xu
, J. S. Wen
, Z. W. Lin
, Q. Li
, G. Gu
, A. Thaler
, S. L. Budko
, P. C. Canfield
, L. H. Greene

Physics and Astronomy

Stony Brook University

University of Illinois at Urbana-Champaign
University of Cambridge
Brookhaven National Laboratory Condensed Matter Physics and Materials Science Department
Ames Laboratory

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

6 Scopus citations

Abstract

Point contact spectroscopy reveals a gap-like feature above the magnetic and structural transition temperatures for underdoped Ba(Fe_1-xCo _x)₂As₂, SrFe₂As₂ and Fe_1+yTe. The conductance spectrum starts showing an enhancement at temperatures as high as 177 K for BaFe₂As₂ (T_N ∼ 132 K) and 250 K for SrFe₂As₂ (T_N ∼ 192 K). Possible origins for this enhancement are discussed in light of recent experimental claims of nematicity in these materials. We construct a modified phase diagram for Co-doped Ba122 showing a gap-like feature existing above T_N and T_S for the underdoped regime.

Original language	English
Article number	022001
Journal	Journal of Physics: Conference Series
Volume	400
Issue number	PART 2
DOIs	https://doi.org/10.1088/1742-6596/400/2/022001
State	Published - 2012
Event	26th International Conference on Low Temperature Physics, LT 2011 - Beijing, China Duration: Aug 10 2011 → Aug 17 2011

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Arham, H. Z., Hunt, C. R., Park, W. K., Gillett, J., Das, S. D., Sebastian, S. E., Xu, Z. J., Wen, J. S., Lin, Z. W., Li, Q., Gu, G., Thaler, A., Budko, S. L., Canfield, P. C., & Greene, L. H. (2012). Gap-like feature in the normal state of X(Fe_1-xCo _x)₂As₂, X = Ba, Sr and Fe_1+yTe revealed by point contact spectroscopy. Journal of Physics: Conference Series, 400(PART 2), Article 022001. https://doi.org/10.1088/1742-6596/400/2/022001

@article{88bf1136b0de41a3b0f0817552ee8452,

title = "Gap-like feature in the normal state of X(Fe1-xCo x)2As2, X = Ba, Sr and Fe1+yTe revealed by point contact spectroscopy",

abstract = "Point contact spectroscopy reveals a gap-like feature above the magnetic and structural transition temperatures for underdoped Ba(Fe1-xCo x)2As2, SrFe2As2 and Fe1+yTe. The conductance spectrum starts showing an enhancement at temperatures as high as 177 K for BaFe2As2 (TN ∼ 132 K) and 250 K for SrFe2As2 (TN ∼ 192 K). Possible origins for this enhancement are discussed in light of recent experimental claims of nematicity in these materials. We construct a modified phase diagram for Co-doped Ba122 showing a gap-like feature existing above TN and TS for the underdoped regime.",

author = "Arham, \{H. Z.\} and Hunt, \{C. R.\} and Park, \{W. K.\} and J. Gillett and Das, \{S. D.\} and Sebastian, \{S. E.\} and Xu, \{Z. J.\} and Wen, \{J. S.\} and Lin, \{Z. W.\} and Q. Li and G. Gu and A. Thaler and Budko, \{S. L.\} and Canfield, \{P. C.\} and Greene, \{L. H.\}",

year = "2012",

doi = "10.1088/1742-6596/400/2/022001",

language = "English",

volume = "400",

journal = "Journal of Physics: Conference Series",

issn = "1742-6588",

number = "PART 2",

note = "26th International Conference on Low Temperature Physics, LT 2011 ; Conference date: 10-08-2011 Through 17-08-2011",

}

Arham, HZ, Hunt, CR, Park, WK, Gillett, J, Das, SD, Sebastian, SE, Xu, ZJ, Wen, JS, Lin, ZW, Li, Q, Gu, G, Thaler, A, Budko, SL, Canfield, PC & Greene, LH 2012, 'Gap-like feature in the normal state of X(Fe_1-xCo _x)₂As₂, X = Ba, Sr and Fe_1+yTe revealed by point contact spectroscopy', Journal of Physics: Conference Series, vol. 400, no. PART 2, 022001. https://doi.org/10.1088/1742-6596/400/2/022001

TY - JOUR

T1 - Gap-like feature in the normal state of X(Fe1-xCo x)2As2, X = Ba, Sr and Fe1+yTe revealed by point contact spectroscopy

AU - Arham, H. Z.

AU - Hunt, C. R.

AU - Park, W. K.

AU - Gillett, J.

AU - Das, S. D.

AU - Sebastian, S. E.

AU - Xu, Z. J.

AU - Wen, J. S.

AU - Lin, Z. W.

AU - Li, Q.

AU - Gu, G.

AU - Thaler, A.

AU - Budko, S. L.

AU - Canfield, P. C.

AU - Greene, L. H.

PY - 2012

Y1 - 2012

N2 - Point contact spectroscopy reveals a gap-like feature above the magnetic and structural transition temperatures for underdoped Ba(Fe1-xCo x)2As2, SrFe2As2 and Fe1+yTe. The conductance spectrum starts showing an enhancement at temperatures as high as 177 K for BaFe2As2 (TN ∼ 132 K) and 250 K for SrFe2As2 (TN ∼ 192 K). Possible origins for this enhancement are discussed in light of recent experimental claims of nematicity in these materials. We construct a modified phase diagram for Co-doped Ba122 showing a gap-like feature existing above TN and TS for the underdoped regime.

AB - Point contact spectroscopy reveals a gap-like feature above the magnetic and structural transition temperatures for underdoped Ba(Fe1-xCo x)2As2, SrFe2As2 and Fe1+yTe. The conductance spectrum starts showing an enhancement at temperatures as high as 177 K for BaFe2As2 (TN ∼ 132 K) and 250 K for SrFe2As2 (TN ∼ 192 K). Possible origins for this enhancement are discussed in light of recent experimental claims of nematicity in these materials. We construct a modified phase diagram for Co-doped Ba122 showing a gap-like feature existing above TN and TS for the underdoped regime.

UR - https://www.scopus.com/pages/publications/84873632041

U2 - 10.1088/1742-6596/400/2/022001

DO - 10.1088/1742-6596/400/2/022001

M3 - Conference article

SN - 1742-6588

VL - 400

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

IS - PART 2

M1 - 022001

T2 - 26th International Conference on Low Temperature Physics, LT 2011

Y2 - 10 August 2011 through 17 August 2011

ER -

Gap-like feature in the normal state of X(Fe_1-xCo _x)₂As₂, X = Ba, Sr and Fe_1+yTe revealed by point contact spectroscopy

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