Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Carr, Scott V."'
Autor:
Tam, David W., Wang, Weiyi, Zhang, Li, Song, Yu, Zhang, Rui, Carr, Scott V., Walker, H. C., Perring, Toby G., Adroja, D. T., Dai, Pengcheng
Understanding the nature of the electronic nematic phase in iron pnictide superconductors is important for elucidating its impact on high-temperature superconductivity. Here we use transport and inelastic neutron scattering to study spin excitations
Externí odkaz:
http://arxiv.org/abs/1904.06743
Autor:
Zhang, Chenglin, Lv, Weicheng, Tan, Guotai, Song, Yu, Carr, Scott V., Chi, Songxue, Matsuda, M., Christianson, A. D., Fernandez-Baca, J. A., Harriger, L. W., Dai, Pengcheng
Neutron spin resonance, a collective magnetic excitation coupled to superconductivity, is one of the most prominent features shared by a broad family of unconventional superconductors including copper oxides, iron pnictides, and heavy fermions. In th
Externí odkaz:
http://arxiv.org/abs/1605.06890
Autor:
Carr, Scott V., Zhang, Chenglin, Song, Yu, Tan, Guotai, Li, Yu, Abernathy, D. L., Stone, M. B., Granroth, G. E., Perring, T. G., Dai, Pengcheng
Publikováno v:
Phys. Rev. B 93, 214506 (2016)
We use time-of-flight (ToF) inelastic neutron scattering (INS) spectroscopy to investigate the doping dependence of magnetic excitations across the phase diagram of NaFe$_{1-x}$Co$_x$As with $x=0, 0.0175, 0.0215, 0.05,$ and $0.11$. The effect of elec
Externí odkaz:
http://arxiv.org/abs/1605.02695
Autor:
Carr, Scott V, Louca, Despina, Siewenie, Joan, Huang, Q., Wang, Aifeng, Chen, Xianhui, Dai, Pengcheng
We use neutron diffraction to study the temperature evolution of the average structure and local lattice distortions in insulating and superconducting potassium iron selenide K$_y$Fe$_{1.6+x}$Se$_2$. In the high temperature paramagnetic state, both m
Externí odkaz:
http://arxiv.org/abs/1404.3715
Autor:
Song, Yu, Regnault, Louis-Pierre, Zhang, Chenglin, Tan, Guotai, Carr, Scott V., Chi, Songxue, Christianson, A. D., Xiang, Tao, Dai, Pengcheng
Publikováno v:
Phys. Rev. B 88, 134512 (2013)
We use unpolarized and polarized inelastic neutron scattering to study low-energy spin excitations in NaFeAs, which exhibits a tetragonal-to-orthorhombic lattice distortion at $T_s\approx 58$ K followed by a collinear antiferromagnetic (AF) order bel
Externí odkaz:
http://arxiv.org/abs/1310.1143
Autor:
Zhang, Chenglin, Li, H. -F., Song, Yu, Su, Yixi, Tan, Guotai, Netherton, Tucker, Redding, Caleb, Carr, Scott V., Sobolev, Oleg, Schneidewind, Astrid, Faulhaber, Enrico, Harriger, L. W., Li, Shiliang, Lu, Xingye, Yao, Daoxin, Das, Tanmoy, Balatsky, A. V., Bruckel, Th., Lynn, J. W., Dai, Pengcheng
Publikováno v:
PhysRevB.88.064504 (2013)
A determination of the superconducting (SC) electron pairing symmetry forms the basis for establishing a microscopic mechansim for superconductivity. For iron pnictide superconductors, the $s^\pm$-pairing symmetry theory predicts the presence of a sh
Externí odkaz:
http://arxiv.org/abs/1308.2453
Autor:
Song, Yu, Carr, Scott V., Lu, Xingye, Zhang, Chenglin, Sims, Zachary C., Luttrell, N. F., Chi, Songxue, Zhao, Yang, Lynn, Jeffrey W., Dai, Pengcheng
Publikováno v:
Phys. Rev. B 87, 184511 (2013)
We use neutron scattering to study the effect of uniaxial pressure on the tetragonal-to-orthorhombic structural ($T_s$) and paramagnetic-to-antiferromagnetic ($T_N$) phase transitions in NaFeAs and compare the outcome with similar measurements on as-
Externí odkaz:
http://arxiv.org/abs/1304.5794
Autor:
Wang, Miaoyin, Lu, Xingye, Ewings, R. A., Harriger, Leland W., Song, Yu, Carr, Scott V., Li, Chunhong, Zhang, Rui, Dai, Pengcheng
Publikováno v:
Phys. Rev. B. 87, 064409 (2013)
We use neutron scattering to study temperature dependent spin excitations in insulating antiferromagnetic (AF) Rb$_{0.8}$Fe$_{1.6}$Se$_2$. In the low-temperature AF state, spin waves can be accurately described by a local moment Heisenberg Hamiltonia
Externí odkaz:
http://arxiv.org/abs/1211.7328
Autor:
Wang, Miaoyin, Li, Chunhong, Abernathy, D. L., Song, Yu, Carr, Scott V., Lu, Xingye, Li, Shiliang, Hu, Jiangping, Xiang, Tao, Dai, Pengcheng
Publikováno v:
Phys. Rev. B 86, 024502 (2012)
We use inelastic neutron scattering to show that superconducting (SC) rubidium iron selenide Rb0.82Fe1.68Se2 exhibits antiferromagnetic (AF) spin excitations near the in-plane wave vector Q = (PI, 0) identical to that for iron arsenide superconductor
Externí odkaz:
http://arxiv.org/abs/1201.3348
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