J.-L. Luo

activity

20082024

most citedObservation of Dirac Cone Electronic Dispersion in BaFe2As2

240 citations · 1.7k across the 28 of their papers we have counts for

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23 papers · 1 filter

cond-mat.supr-con2016★ 9 cited

New phase transition in Na $_{2}$ Ti $_{2}$ As $_{2}$ O revealed by Raman scattering

D. Chen, T. T. Zhang, Z. -D. Song +8

We performed a Raman scattering study of Na $_{2}$ Ti $_{2}$ As $_{2}$ O. We identified a symmetry breaking structural transition at around $T_{s} = 150$ K, which matches a large bump in the ele…

cond-mat.supr-con2015★ 25 cited

Observation of Raman active phonon with Fano lineshape in quasi-one-dimensional superconductor K $_{2}$ Cr $_{3}$ As $_{3}$

W. -L. Zhang, H. Li, Dai Xia +6

We performed a polarized Raman scattering study of quasi-one-dimensional superconductor K $_{2}$ Cr $_{3}$ As $_{3}$ . We detect two A $_{1}^{'}$ phonons and three E $^{'}$ phonons. One of t…

cond-mat.supr-con2014★ 206 cited

Pressure induced superconductivity on the border of magnetic order in MnP

J. -G. Cheng, K. Matsubayashi, W. Wu +4

We report the discovery of superconductivity on the border of long-range magnetic order in the itinerant-electron helimagnet MnP via the application of high pressure. Superconducti…

cond-mat.supr-con2012★ 4 cited

Deviating band symmetries and many-body interactions in a model hole doped iron pnictide superconductor

L. A. Wray, R. Thomale, C. Platt +6

We present a polarization resolved study of the low energy band structure in the optimally doped iron pnictide superconductor Ba $_{0.6}$ K $_{0.4}$ Fe $_{2}$ As $_{2}$ (T $_{c}$ =37K) using angl…

cond-mat.supr-con2012★ 17 cited

Paraconductivity of K-doped SrFe2As2 superconductor

P. Marra, A. Nigro, Z. Li +4

Paraconductivity of the optimally K-doped SrFe2As2 superconductor is investigated within existing fluctuation mechanisms. The in-plane excess conductivity has been measured in high…

cond-mat.supr-con2011★ 34 cited

Nonequilibrium Quasiparticle Relaxation Dynamics in Single Crystals of Hole and Electron doped BaFe $_{2}$ As $_{2}$

Darius H Torchinsky, James W. McIver, David Hsieh +4

We report on the nonequilibrium quasiparticle dynamics in BaFe $_{2}$ As $_{2}$ on both the hole doped (Ba $_{1 - x}$ K $_{x}$ Fe $_{2}$ As $_{2}$ ) and electron doped (BaFe $_{2 - y}$ Co $_{y}$ As $_{2}$ ) sides of…

cond-mat.supr-con2011★ 1 cited

Multiple superconducting gap and anisotropic spin fluctuations in iron arsenides: Comparison with nickel analog

Z. Li, S. Kawasaki, T. Oka +12

We present extensive 75As NMR and NQR data on the superconducting arsenides PrFeAs0.89F0.11 (Tc=45 K), LaFeAsO0.92F0.08 (Tc=27 K), LiFeAs (Tc = 17 K) and Ba0.72K0.28Fe2As2 (Tc = 31…

cond-mat.supr-con2011★ 52 cited

Infrared spectrum and its implications for the electronic structure of the semiconducting iron selenide K $_{0.83}$ Fe $_{1.53}$ Se $_{2}$

Z. G. Chen, R. H. Yuan, T. Dong +7

We report an infrared spectroscopy study on K $_{0.83}$ Fe $_{1.53}$ Se $_{2}$ , a semiconducting parent compound of the new iron-selenide system. The major spectral features are found to…

cond-mat.supr-con2010★ 13 cited

Three dimensionality of band structure and a large residual quasiparticle population in Ba $_{0.67}$ K $_{0.33}$ Fe $_{2}$ As $_{2}$ as revealed by the c-axis polarized optical measurement

B. Cheng, Z. G. Chen, C. L. Zhang +10

We report on a c-axis polarized optical measurement on a Ba $_{0.67}$ K $_{0.33}$ Fe $_{2}$ As $_{2}$ single crystal. We find that the c-axis optical response is significantly different from…

cond-mat.supr-con2010★ 48 cited

Intergrain effects in the AC susceptibility of polycrystalline LaFeAsO_{0.94}F_{0.06}: comparison with cuprate superconductors

G. Bonsignore, A. Agliolo Gallitto M. Li Vigni, J. L. Luo +3

The AC susceptibility at zero DC magnetic field of a polycrystalline sample of LaFeAsO_{0.94}F_{0.06} (T_c = 24 K) has been investigated as a function of the temperature, the ampli…

cond-mat.supr-con2010★ 18 cited

Evidence for a full energy gap for nickel-pnictide LaNiAsO_{1-x}F_x superconductors by ^{75}As nuclear quadrupole resonance

T. Tabuchi, Z. Li, G. F. Chen +4

We report systematic ^{75}As-NQR and ^{139}La-NMR studies on nickel-pnictide superconductors LaNiAsO_{1-x}F_x (x=0, 0.06, 0.10 and 0.12). The spin lattice relaxation rate 1/T_1 dec…

cond-mat.supr-con2009★ 3 cited

Electromagnetic response of LaO_0.94F_0.06FeAs: AC susceptibility and microwave surface resistance

A. Agliolo Gallitto, G. Bonsignore, M. Bonura +3

We discuss on the electromagnetic response of a polycrystalline sample of LaO_0.94F_0.06FeAs exposed to DC magnetic fields up to 10 kOe. The low- and high-frequency responses have…

cond-mat.supr-con2009★ 240 cited

Observation of Dirac Cone Electronic Dispersion in BaFe2As2

P. Richard, K. Nakayama, T. Sato +8

We performed an angle-resolved photoemission spectroscopy study of BaFe2As2, which is the parent compound of the so-called 122 phase of the iron-pnictide high-temperature supercond…

cond-mat.supr-con2009★ 19 cited

Optical study on the spin-density wave properties in single crystalline Na $_{1 - δ}$ FeAs

W. Z. Hu, G. Li, P. Zheng +3

We report an optical investigation on the in-plane charge dynamics for Na $_{1 - δ}$ FeAs single crystal. A clear optical evidence for the spin-density wave (SDW) gap is observed. As t…

cond-mat.supr-con2009★ 75 cited

Band-dependent Quasiparticle Dynamics in Single Crystals of the Ba $_{0.6}$ K $_{0.4}$ Fe $_{2}$ As $_{2}$ Superconductor Revealed by Pump-Probe Spectroscopy

Darius H Torchinsky, G. F. Chen, J. L. Luo +2

We report on band-dependent quasiparticle dynamics in Ba $_{0.6}$ K $_{0.4}$ Fe $_{2}$ As $_{2}$ ( $T_{c} = 37 K$ ) measured using ultrafast pump-probe spectroscopy. In the superconducting state,…

cond-mat.supr-con2009★ 47 cited

Possible high temperature superconductivity in Ti-doped A-Sc-Fe-As-O (A= Ca, Sr) system

G. F. Chen, T. -L. Xia, H. X. Yang +4

We report a systematic study on the effect of partial substitution of Sc $^{3 +}$ by Ti $^{4 +}$ in Sr $_{2}$ ScFeAsO $_{3}$ , Ca $_{2}$ ScFeAsO $_{3}$ and Sr $_{3}$ Sc $_{2}$ Fe $_{2}$ As $_{2}$ O$_…

cond-mat.supr-con2009★ 113 cited

Multiple phase transitions in single-crystalline Na $_{1 - δ}$ FeAs

G. F. Chen, W. Z. Hu, J. L. Luo +1

Specific heat, resistivity, susceptibility and Hall coefficient measurements were performed on high-quality single crystalline Na $_{1 - δ}$ FeAs. This compound is found to undergo thr…

cond-mat.supr-con2008★ 98 cited

Electronic structure of optimally doped pnictide Ba $_{0.6}$ K $_{0.4}$ Fe $_{2}$ As $_{2}$ : a comprehensive ARPES investigation

H. Ding, K. Nakayama, P. Richard +13

We have conducted a comprehensive angle-resolved photoemission study on the normal state electronic structure of the Fe-based superconductor Ba $_{0.6}$ K $_{0.4}$ Fe $_{2}$ As $_{2}$ . We hav…

cond-mat.supr-con2008★ 196 cited

Electronic properties of single-crystalline Fe $_{1.05}$ Te and Fe $_{1.03}$ Se $_{0.30}$ Te $_{0.70}$

G. F. Chen, Z. G. Chen, J. Dong +6

We report on a comprehensive study of the transport, specific heat, magnetic susceptibility and optical spectroscopy on single crystal of Fe $_{1.05}$ Te. We confirm that Fe $_{1.05}$ …

cond-mat.supr-con2008★ 22 cited

Thermal Hall Conductivity as a Probe of Gap Structure in Multi-band Superconductors: The Case of $B a_{1 - x} K_{x} F e_{2} A s_{2}$

J. G. Checkelsky, R. Thomale, Lu Li +4

The sign and profile of the thermal Hall conductivity $κ_{x y}$ gives important insights into the gap structure of multi-band superconductors. With this perspective, we have investi…

cond-mat.supr-con2008★ 208 cited

Band Structure and Fermi Surface of an Extremely Overdoped Iron-Based Superconductor KFe2As2

T. Sato, K. Nakayama, Y. Sekiba +8

We have performed high-resolution angle-resolved photoemission spectroscopy on heavily overdoped KFe_2As_2 (transition temperature (Tc = 3 K). We observed several renormalized band…

cond-mat.supr-con2008★ 4 cited

Ultrafast pump-probe study of phase separation and competing orders in the underdoped (Ba,K)Fe $_{2}$ As $_{2}$ superconductor

Elbert E. M. Chia, D. Talbayev, J. -X. Zhu +8

We report measurements of quasiparticle relaxation dynamics in the high-temperature superconductor (Ba,K)Fe $_{2}$ As $_{2}$ in optimally doped, underdoped and undoped regimes. In the…

cond-mat.supr-con2008★ 141 cited

Tightly-bound Cooper pair, quasiparticle kinks and clues on the pairing potential in a high Tc FeAs Superconductor

L. Wray, D. Qian, D. Hsieh +12

We present a systematic photoemission study of the newly discovered high Tc superconductor class (Sr/Ba)1-xKxFe2As2. By utilizing a unique photon energy range and scattering geomet…

New phase transition in Na2​Ti2​As2​O revealed by Raman scattering

Observation of Raman active phonon with Fano lineshape in quasi-one-dimensional superconductor K2​Cr3​As3​

Pressure induced superconductivity on the border of magnetic order in MnP

Deviating band symmetries and many-body interactions in a model hole doped iron pnictide superconductor

Paraconductivity of K-doped SrFe2As2 superconductor

Nonequilibrium Quasiparticle Relaxation Dynamics in Single Crystals of Hole and Electron doped BaFe2​As2​

Multiple superconducting gap and anisotropic spin fluctuations in iron arsenides: Comparison with nickel analog

Infrared spectrum and its implications for the electronic structure of the semiconducting iron selenide K0.83​Fe1.53​Se2​

Three dimensionality of band structure and a large residual quasiparticle population in Ba0.67​K0.33​Fe2​As2​ as revealed by the c-axis polarized optical measurement