检索结果-南通市图书馆

Spatial modulation of unitary impurity-induced resonances in superconducting CeCoIn5

在线全文

学校读者我要写书评

暂无评论

Frontiers of physics 2016年第3期11卷 105-111页

作者： Ge Zhang Bin Liu Yi-fengYang shiping feng Department of Physics Beijing Jiaotong University Beijing 100044 China Beijing National Laboratory for Co:~densed Matter Physics and Institute of Physics Chinese Academy of Sciences Beijing 100190 China Collaborative Innovation Center of Quantum Matter Beijing 100190 China Department of Physics Beijing Normal University Beijing 100875 China

Motivated by recent experimental progress in high-resolution scanning tunneling microscopy （STM） techniques, we investigate the local quasiparticle density of states around a unitary impurity in the heavy-fermion superconductor CeCoIns. Based on the T-matrix approach we obtain a sharp nearly zero-energy resonance state in the strong impurity potential scattering localized around the impurity and find qualitative differences in the spatial pattern of the tunneling conductance modulated by the nodal structure of the superconducting gap. These unique features may be used as a probe of the superconducting gap symmetry and, in combination with further STM measurements, may help to confirm the dx2-y2 pairing in CeCoIn5 at ambient pressure.

关键词： pairing symmetries effects of disorder tunneling phenomena

A NEW SOLUTION TO THE ANDERSON MODEL AND THE WILSON RATIO OF THE HEAVYFERMION SYSTEM

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 1987年第6期4卷 257-260页

作者： feng shiping Physics Department and Institute of Low Energy Nuclear Physics Beijing Normal UniversityBeijing

The solution of Anderson model is got by using the Bogoliubov-type *** calculated Wilson ratio for the heavy-fermion systems is in qualitative agreement with the experimental results.

关键词： qualitative transformation SOLUTION

LANDAUS FERMI LIQUID THEORY OF HEAVY-FERMION SUPERCONDUCTING SYSTEMS

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics Letters 1987年第6期4卷 269-272页

作者： feng shiping Physics Department and Institute of Low Energy Nuclear Physics Beijing Normal UniversityBeijing

We have established a relation between the parameters of periodic Anderson model Hamiltonian and the Landau's phenomenological paramerters,and applied it to heavy-fermion superconducting *** calculated results of specific heat coefficients and superconducting critical temperatures are in agreement with the experimental *** conclusion is that heavy-fermion superconducting systems induced by Fermi liquid interaction are P-wave type.

关键词： conclusion Hamiltonian Fermi

Quantum Monte Carlo study of the dominating pairing symmetry in doped honeycomb lattice

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics B 2019年第7期28卷 434-438页

作者： Xingchuan Zhu Tao Ying Huaiming Guo shiping feng Department of Physics Beijing Normal University Beijing 100875 China Department of Physics Harbin Institute of Technology Harbin 150001 Chin Department of Physics Key Laboratory of Micro-Nano Measurement-Manipulation and Physics(Ministry of Education) Beihang University Beijing 100191 China

We perform a systematic determinant quantum Monte Carlo(DQMC) study of the dominating pairing symmetry in a doped honeycomb *** Hubbard model is simulated over a full range of filling levels for both weak and strong *** weak couplings, the d-wave state *** effective susceptibility as a function of filling shows a peak, and its position moves toward half filling as the temperature is increased, from which the optimal filling of the superconducting ground state is *** the sign problem becomes severe for strong couplings, the simulations access the lowest temperature at which the DQMC method generates reliable *** the coupling is strengthened, the d-wave state is enhanced in the high-filling *** systematic DQMC results provide new insights into the superconducting pairing symmetry in the doped honeycomb lattice.

关键词： determinant quantum Monte Carlo(DQMC) simulation honeycomb lattice superconducting pairing symmetry

Preface to the topical issue

在线全文

学校读者我要写书评

暂无评论

Science China(Physics,Mechanics & Astronomy) 2018年第12期61卷 1-2页

作者： Hai-Hu Wen HuiQiu Yuan shiping feng Nanjing University Nanjing 210093China Zhejiang University Hangzhou 310058China Beijing Normal University Beijing 100875China

Transition metals contain d-orbital electrons,and compounds based on transition metals often exhibit a duality of magnetism and *** date,a large number of interesting physics phenomena exhibited by transition-metal compounds have been discovered;for example,high-temperature superconductivity has been found to emerge in compounds such as copper-oxide (cuprate)compounds,iron pnictides/*** the relationship between superconductivity and magnetism is essential for realizing these unconventional superconductors.

关键词： topical issue Preface

Solitonic Diffusion of Wavepackets in One-Dimensional Bose–Einstein Condensates

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 2019年第12期36卷 1-4页

作者： Yu Mo Cong Zhang shiping feng Shi-Jie Yang Department of Physics Beijing Normal UniversityBeijing 100875

Solitonic characteristics are revealed in the diffusion process of a hump or a notch wave packet in a one-dimensional Bose-Einstein *** numerically solving the time-dependent Gross-Pitaevskii equation,we find completely different spreading behavior for attractive or repulsive *** the attractive condensate,a series of bright solitons are continuously generated one after another at the wave front and they nearly stay at the positions where they are generated in the whole diffusion *** contrast,for the repulsive condensate,the initial wave packet splits at the beginning into a series of grey solitons that travel at different *** moving velocity of the grey soliton depends on nonlinear interaction strength,as well as the shape of a particular grey soliton.

关键词： process Einstein attractive

Possible Spin-Liquid State in Doped Antiferromagnets

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 1992年第1期9卷 45-48页

作者： feng shiping HAN Fei GUO Rui Department of Physics Beijing Normal UniversityBeijing 100875

The phase diagram of the copper oxide materials as a function of doping 6 is obtained in the framework of t-t'-J-J' model by using the Schiwinger boson slave fermion *** results show that the both doped holes and quan... 详细信息

关键词： theory state doping

SUPERCONDUCTIVITY CAUSED BY STRONG CORRELATION

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics Letters 1988年第5期5卷 229-231页

作者： feng shiping MA Benkun Department of Physics and Institute of Low Energy Nuclear Physics Beijing Normal UniversityBeijing Department of Physics Beijing Normal UniversityBeijing

We used the Anderson lattice Hamiltonian to discuss the superconductivity of two-band strong correlation systems and found that superconductivity of these systems is caused by strong correlations.

关键词： superconductivity Hamiltonian lattice

MEASUREMENT AND CONTROL OF COMBUSTION PROCESS OF INDUSTRIAL FURNACES

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

MEASUREMENT AND CONTROL OF COMBUSTION PROCESS OF INDUSTRIAL ...