skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Phase diagram and neutron spin resonance of superconducting NaFe 1 - x Cu x As

Abstract

In this paper, we use transport and neutron scattering to study the electronic phase diagram and spin excitations of NaFe 1-xCu xAs single crystals. Similar to Co- and Ni-doped NaFeAs, a bulk superconducting phase appears near x≈2% with the suppression of stripe-type magnetic order in NaFeAs. Upon further increasing Cu concentration the system becomes insulating, culminating in an antiferromagnetically ordered insulating phase near x≈50%. Using transport measurements, we demonstrate that the resistivity in NaFe 1-xCu xAs exhibits non-Fermi-liquid behavior near x≈1.8%. Our inelastic neutron scattering experiments reveal a single neutron spin resonance mode exhibiting weak dispersion along c axis in NaFe 0.98Cu 0.02As. The resonance is high in energy relative to the superconducting transition temperature T c but weak in intensity, likely resulting from impurity effects. These results are similar to other iron pnictides superconductors despite that the superconducting phase in NaFe 1-xCu xAs is continuously connected to an antiferromagnetically ordered insulating phase near x≈50% with significant electronic correlations. Finally, therefore, electron correlations is an important ingredient of superconductivity in NaFe 1-xCu xAs and other iron pnictides.

Authors:
 [1];  [2];  [2];  [1];  [1];  [1];  [3];  [3];  [4];  [5]
  1. Beijing Normal Univ. (China). Dept. of Physics
  2. Rice Univ., Houston, TX (United States). Dept. of Physics and Astronomy
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Quantum Condensed Matter Division
  4. Chinese Academy of Sciences (CAS), Beijing (China). Beijing National Lab. for Condensed Matter Physics. Inst. of Physics; Collaborative Innovation Center of Quantum Matter, Beijing (China)
  5. Rice Univ., Houston, TX (United States). Dept. of Physics and Astronomy; Beijing Normal Univ. (China). Dept. of Physics
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Rice Univ., Houston, TX (United States); Beijing Normal Univ. (China)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES); Robert A. Welch Foundation (United States); National Basic Research Program of China; National Natural Science Foundation of China (NNSFC); Fundamental Research Funds for the Central Universities (China)
OSTI Identifier:
1427593
Alternate Identifier(s):
OSTI ID: 1342609
Grant/Contract Number:  
AC05-00OR22725; SC0012311; C-1839; 2012CB821401; 11374011; 2014KJJCB27
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 95; Journal Issue: 5; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE; superconductivity; crystalline systems; neutron techniques; transport techniques

Citation Formats

Tan, Guotai, Song, Yu, Zhang, Rui, Lin, Lifang, Xu, Zhuang, Tian, Long, Chi, Songxue, Graves-Brook, M. K., Li, Shiliang, and Dai, Pengcheng. Phase diagram and neutron spin resonance of superconducting NaFe1-xCuxAs. United States: N. p., 2017. Web. doi:10.1103/PhysRevB.95.054501.
Tan, Guotai, Song, Yu, Zhang, Rui, Lin, Lifang, Xu, Zhuang, Tian, Long, Chi, Songxue, Graves-Brook, M. K., Li, Shiliang, & Dai, Pengcheng. Phase diagram and neutron spin resonance of superconducting NaFe1-xCuxAs. United States. https://doi.org/10.1103/PhysRevB.95.054501
Tan, Guotai, Song, Yu, Zhang, Rui, Lin, Lifang, Xu, Zhuang, Tian, Long, Chi, Songxue, Graves-Brook, M. K., Li, Shiliang, and Dai, Pengcheng. Fri . "Phase diagram and neutron spin resonance of superconducting NaFe1-xCuxAs". United States. https://doi.org/10.1103/PhysRevB.95.054501. https://www.osti.gov/servlets/purl/1427593.
@article{osti_1427593,
title = {Phase diagram and neutron spin resonance of superconducting NaFe1-xCuxAs},
author = {Tan, Guotai and Song, Yu and Zhang, Rui and Lin, Lifang and Xu, Zhuang and Tian, Long and Chi, Songxue and Graves-Brook, M. K. and Li, Shiliang and Dai, Pengcheng},
abstractNote = {In this paper, we use transport and neutron scattering to study the electronic phase diagram and spin excitations of NaFe1-xCuxAs single crystals. Similar to Co- and Ni-doped NaFeAs, a bulk superconducting phase appears near x≈2% with the suppression of stripe-type magnetic order in NaFeAs. Upon further increasing Cu concentration the system becomes insulating, culminating in an antiferromagnetically ordered insulating phase near x≈50%. Using transport measurements, we demonstrate that the resistivity in NaFe1-xCuxAs exhibits non-Fermi-liquid behavior near x≈1.8%. Our inelastic neutron scattering experiments reveal a single neutron spin resonance mode exhibiting weak dispersion along c axis in NaFe0.98Cu0.02As. The resonance is high in energy relative to the superconducting transition temperature Tc but weak in intensity, likely resulting from impurity effects. These results are similar to other iron pnictides superconductors despite that the superconducting phase in NaFe1-xCuxAs is continuously connected to an antiferromagnetically ordered insulating phase near x≈50% with significant electronic correlations. Finally, therefore, electron correlations is an important ingredient of superconductivity in NaFe1-xCuxAs and other iron pnictides.},
doi = {10.1103/PhysRevB.95.054501},
url = {https://www.osti.gov/biblio/1427593}, journal = {Physical Review B},
issn = {2469-9950},
number = 5,
volume = 95,
place = {United States},
year = {2017},
month = {2}
}

Journal Article:

Citation Metrics:
Cited by: 2 works
Citation information provided by
Web of Science

Save / Share:

Works referenced in this record:

Spin anisotropy due to spin-orbit coupling in optimally hole-doped Ba 0.67 K 0.33 Fe 2 As 2
journal, December 2016


Phase diagram and physical properties of NaFe 1 x Cu x As single crystals
journal, September 2013


Incommensurate Spin-Density Wave Order in Electron-Doped BaFe 2 As 2 Superconductors
journal, June 2011


Ab Initio Evidence for Strong Correlation Associated with Mott Proximity in Iron-Based Superconductors
journal, April 2012


Direct observation of spin–orbit coupling in iron-based superconductors
journal, December 2015


Iron-Based Layered Superconductor La[O 1- x F x ]FeAs ( x = 0.05−0.12) with T c = 26 K
journal, March 2008


Electron doping evolution of the neutron spin resonance in NaFe 1 x Co x As
journal, May 2016


Superconductivity in iron compounds
journal, December 2011


A Mott insulator continuously connected to iron pnictide superconductors
journal, December 2016


Absence of superconductivity in hole-doped BaFe 2 x Cr x As 2 single crystals
journal, June 2009


Gap symmetry and structure of Fe-based superconductors
journal, October 2011


Unconventional superconductivity in Ba0.6K0.4Fe2As2 from inelastic neutron scattering
journal, December 2008


Antiferromagnetic order and spin dynamics in iron-based superconductors
journal, August 2015


Fermi-liquid, non-Fermi-liquid, and Mott phases in iron pnictides and cuprates
journal, February 2010


Selective Mott Physics as a Key to Iron Superconductors
journal, April 2014


Strong Correlations and Magnetic Frustration in the High T c Iron Pnictides
journal, August 2008


Physical and magnetic properties of Ba(Fe 1 x Mn x ) 2 As 2 single crystals
journal, October 2011


Environmental stability and anisotropic resistivity of Co-doped Na 1 δ Fe 1 x Co x As
journal, October 2012


Strong Electronic Correlations in Iron Pnictides: Comparison of Optical Spectra for BaFe 2 As 2 -Related Compounds
journal, October 2014


From quantum matter to high-temperature superconductivity in copper oxides
journal, February 2015


In-plane spin excitation anisotropy in the paramagnetic state of NaFeAs
journal, October 2013


Universality of the Dispersive Spin-Resonance Mode in Superconducting BaFe 2 As 2
journal, October 2013


Kinetic frustration and the nature of the magnetic and paramagnetic states in iron pnictides and iron chalcogenides
journal, September 2011


Structural and magnetic phase transitions in Na 1 δ FeAs
journal, July 2009


Crystal growth and physical properties of SrCu 2 As 2 , SrCu 2 Sb 2 , and BaCu 2 Sb 2
journal, June 2012


NaFe 0.56 Cu 0.44 As : A Pnictide Insulating Phase Induced by On-Site Coulomb Interaction
journal, August 2016


Crossover from weak to strong pairing in unconventional superconductors
journal, June 2011


Transport near a quantum critical point in BaFe2(As1−xPx)2
journal, January 2014


Doping a Mott insulator: Physics of high-temperature superconductivity
journal, January 2006


A common thread: The pairing interaction for unconventional superconductors
journal, October 2012


Spin-Orbit Coupling in Fe-Based Superconductors
journal, April 2013


A crossover in the phase diagram of NaFe 1− x Co x As determined by electronic transport measurements
journal, April 2013


    Works referencing / citing this record: