Zobrazeno 1 - 10
of 61
pro vyhledávání: '"Harriger, Leland W."'
Autor:
Qin, Yayuan, Shen, Yao, Hao, Yiqing, Wo, Hongliang, Shen, Shoudong, Ewings, Russell A., Zhao, Yang, Harriger, Leland W., Lynn, Jeffrey W., Zhao, Jun
The discovery of pressure-induced superconductivity in helimagnets (CrAs, MnP) has attracted considerable interest in understanding the relationship between complex magnetism and unconventional superconductivity. However, the nature of the magnetism
Externí odkaz:
http://arxiv.org/abs/2212.13865
Autor:
Lu, Xingye, Scherer, Daniel D., Tam, David W., Zhang, Wenliang, Zhang, Rui, Luo, Huiqian, Harriger, Leland W., Walker, H. C., Adroja, D. T., Andersen, Brian M., Dai, Pengcheng
Publikováno v:
Phys. Rev. Lett. 121, 067002 (2018)
Understanding magnetic interactions in the parent compounds of high-temperature superconductors forms the basis for determining their role for the mechanism of superconductivity. For parent compounds of iron pnictide superconductors such as $A$Fe$_2$
Externí odkaz:
http://arxiv.org/abs/1807.01471
Autor:
Plumb, K. W., Hwang, Kyusung, Qiu, Y., Harriger, Leland W., Granroth, G. E., Shu, G. J., Chou, F. C., Ruegg, Ch., Kim, Yong Baek, Kim, Young-June
Publikováno v:
Nature Physics 12, 224-229 (2016)
When the energy eigenvalues of two coupled quantum states approach each other in a certain parameter space, their energy levels repel each other and level crossing is avoided. Such level repulsion, or avoided level crossing, is commonly used to descr
Externí odkaz:
http://arxiv.org/abs/1408.2528
Autor:
Lu, Xingye, Tam, David W., Zhang, Chenglin, Luo, Huiqian, Wang, Meng, Zhang, Rui, Harriger, Leland W., Keller, T., Keimer, B., Regnault, L. -P., Maier, Thomas A., Dai, Pengcheng
Publikováno v:
Phys. Rev. B 90, 024509 (2014)
High-temperature superconductivity in iron pnictides occurs when electrons are doped into their antiferromagnetic (AF) parent compounds. In addition to inducing superconductivity, electron-doping also changes the static commensurate AF order in the u
Externí odkaz:
http://arxiv.org/abs/1407.0568
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:
Harriger, Leland W., Liu, Mengshu, Luo, Huiqian, Ewings, R. A., Frost, C. D., Perring, T. G., Dai, Pengcheng
Publikováno v:
Phys. Rev. B 86, 140403(R) (2012)
We use inelastic neutron scattering to study temperature dependence of the paramagnetic spin excitations in iron pnictide BaFe$_2$As$_2$ throughout the Brillouin zone. In contrast to a conventional local moment Heisenberg system, where paramagnetic s
Externí odkaz:
http://arxiv.org/abs/1209.6271
Autor:
Harriger, Leland W., Lipscombe, J., Zhang, Chenglin, Luo, Huiqian, Wang, Meng, Marty, Karol, Lumsden, M. D., Dai, Pengcheng
Publikováno v:
Phys. Rev. B 85, 054511 (2012)
We use inelastic neutron scattering to study the temperature dependence of the low-energy spin excitations in single crystals of superconducting FeTe$_{0.6}$Se$_{0.4}$ ($T_c=14$ K). In the low-temperature superconducting state, the imaginary part of
Externí odkaz:
http://arxiv.org/abs/1202.5015
Autor:
Liu, Mengshu, Harriger, Leland W., Luo, Huiqian, Wang, Meng, Ewings, R. A., Guidi, T., Park, Hyowon, Haule, Kristjan, Kotliar, Gabriel, Hayden, S. M., Dai, Pengcheng
Publikováno v:
Nature Physics 8, 376-381 (2012)
Since the discovery of the metallic antiferromagnetic (AF) ground state near superconductivity in iron-pnictide superconductors, a central question has been whether magnetism in these materials arises from weakly correlated electrons, as in the case
Externí odkaz:
http://arxiv.org/abs/1202.2827
Autor:
Wang, Miaoyin, Fang, Chen, Yao, Dao-Xin, Tan, GuoTai, Harriger, Leland W., Song, Yu, Netherton, Tucker, Zhang, Chenglin, Wang, Meng, Stone, Matthew B., Tian, Wei, Hu, Jiangping, Dai, Pengcheng
Publikováno v:
Nature Communications 2, 580 (2011)
The discovery of alkaline iron selenide $A$Fe$_{1.6+x}$Se$_2$ ($A=$ K, Rb, Cs) superconductors has generated considerable excitement in the condensed matter physics community because superconductivity in these materials may have a different origin fr
Externí odkaz:
http://arxiv.org/abs/1105.4675
Autor:
Harriger, Leland W., Luo, Huiqian, Liu, Mengshu, Perring, T. G., Frost, C., Hu, Jiangping, Norman, M. R., Dai, Pengcheng
Publikováno v:
Phys. Rev. B 84, 054544 (2011)
Magnetic interactions are generally believed to play a key role in mediating electron pairing for superconductivity in iron arsenides; yet their character is only partially understood. Experimentally, the antiferromagnetic (AF) transition is always p
Externí odkaz:
http://arxiv.org/abs/1011.3771