陈斌
个性化签名
- 姓名:陈斌
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学术头衔:
博士生导师, 优秀教师/优秀教育工作者
- 职称:-
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学科领域:
凝聚态物理学
- 研究兴趣:
陈斌,教授,理学博士,博士后。1985年毕业于杭州师范学院,获学士学位,后留校任教。1990年至1993年在南开大学数学研究所攻读理论物理专业硕士研究生,师从葛墨林院士,从事低维与小尺寸系统物理性质的理论研究,93年获硕士学位。1994年至1997年在浙江大学物理系攻读博士学位,师从张其瑞、焦正宽教授,继续从事低维与小尺寸系统物理性质的理论研究,1997年获博士学位。同年,进入中科院理论物理所博士后流动站工作,师从苏肇冰院士,从事介观物理、低维磁性系统物理性质的研究,1999年出站回杭州师范学院工作。同年进入浙江省“151”跨世纪人才工程。2000年3月至4月去香港大学学术访问;2001年6月至9月去德国奥古斯堡大学理论物理Ⅱ组、意大利国际理论物理中心学术访问;2002年4月至10月去美国辛辛那提大学物理系工作访问。近年来,作为第一或第二作者在SCI核心期刊上发表论文近30篇,1997年以来论文被SCI他引120次。2002年获浙江省科学技术二等奖一项(独立)。被浙江省人事厅列入“151”新世纪一层次人才、杭州市人事局列入“131”新世纪一层次人才。作为主持人先后举办两期“151”人才高级研修班。与合作者共同建立了浙江省天文学会。主持的浙江省教育规划课题已通过鉴定, 与合作者一起获得浙江省教学成果二等奖。2003年、2004年连续两年主持浙江省高考理科综合阅卷工作获得好评。2003年获教育部优秀青年教师资助项目,同年获浙江省首届优秀博士后。2004年12月去美国俄克拉荷玛州立大学留学。
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3674
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成果阅读
663
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成果数
10
【期刊论文】Effective theory of the hole-doped spin-1 chain
陈斌, Xi Dai, Bin Chen, and Zhao-Bin Su
PHYSICAL REVIEW B VOLUME 59,NUMBER18,-0001,():
-1年11月30日
An effective theory for the hole-doped spin-1 antiferromagnetic chain is proposed in this paper. The two branches of low-energy quasiparticle excitation is obtained by the diagrammatic technique. In the large t limit (in which t is the hole hopping term), the lower band is essentially the bound state of one hole and one magnon and the other band is the single-hole state. We find a critical value of t, tc50.21DH in which DH is the Haldane gap!. For t.tc, with the decrement of t, the mixing of these two bands become stronger and stronger, and at the same time the effective band mass becomes larger and larger. When t,tc the minimum of the lower band moves away from zero to the other point between zero and p/2. The spin structure factor is also calculated in this paper, and we find that for the larget limit the main contribution is from the interband transition, which induces a resonant peak in the Haldane gap. For the small t limit the main contribution is from the intraband transition, which only causes a diffusionlike broad bump in the Haldane gap.
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【期刊论文】Schwinger-boson mean-field theory of the Heisenberg ferrimagnetic spin chain
陈斌, Congjun Wu, Bin Chen, Xi Dai, Yue Yu, and Zhao-Bin Su
PHYSICAL REVIEW B VOLUME 60, NUMBER2,-0001,():
-1年11月30日
The Schwinger-boson mean-field theory is applied to the quantum ferrimagnetic Heisenberg chain. There is a ferrimagnetic long-range order in the ground state. We observe two branches of the low-lying excitation and calculate the spin reduction, the gap of the antiferromagnetic branch, and the spin fluctuation at T50K. These results agree with the established numerical results quite well. At finite temperatures, the long-range order is destroyed because of the disappearance of the Bose condensation. The thermodynamic observables, such as the ree energy, magnetic susceptibility, specific heat, and the spin correlation at T.0 K, are calculated. The Txuni has a minimum at intermediate temperatures and the spin-correlation length behaves as T21 at low temperatures. These qualitatively agree with the numerical results and the difference is small at low temperatures.
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【期刊论文】Quantum theory for mesoscopic electric circuits
陈斌, You-Quan Li, Bin Chen
PHYSICAL REVIEW B VOLUME 53, NUMBER7,-0001,():
-1年11月30日
A quantum theory for mesoscopic electric circuits in accord with the discreteness of electric charges is proposed. On the basis of the theory, the Schrodinger equation for the quantum LC design and L design is solved exactly. The uncertainty relation for electric charge and current is obtained and a minimum uncertainty state is solved. By introducing a gauge field, a formula for persistent current arising from magnetic flux is obtained.
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【期刊论文】Superconductivity mechanism of Bal_xK xBiO3
陈斌, Bin Chen a, b, *, Chaofan Yu c, Hui Fang a, Zhenkuan Jiao a, Qirui Zhang a
Physica C 250(1995)367-374,-0001,():
-1年11月30日
Based on the singly occupied aio. picture and the mechanism of charge fluctuation, the effective Hamiltonian of the two-band Hubbard model is derived by using the degeneracy perturbation theory for the noncuprate compound Bal_xKxBiO 3. By considering the next-neighbour pairing of two opposite spin holes in coordinate space, the Green's function equation of motion and the superconductivity equation are obtained. Furthermore, how the superexchange interaction and the hopping energy affect the next-neighbour pairing has been reasonably explained, and the superconductivity window is due to the Cooper pairing in coordinate space.
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【期刊论文】Quantum effects in a mesoscopic circuit
陈斌, Bin Chen a, b, You Quan Li a, Hui Fang a, Zheng Kuan Jiao a, Qi Rui Zhang a
Physics Letters A 205(1995)121-124,-0001,():
-1年11月30日
On the basis of the equation of motion for a RLC circuit with source, the energy fluctuation of the circuit is discussed by using the fluctuation-dissipation theorem. It is found that the fluctuation is a quantum effect at low temperature but becomes a classical thermodynamic effect when the temperature increases. We have quantized the circuit at zero temperature, and btained the fluctuations of charge and current as well as the uncertainty relation.
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【期刊论文】Bloch wave oscillation and Coulomb blockade in mesoscopic electric circuits
陈斌, Bin Chen a, b, c, Lijun Chen b, Rushan Hana, d
Physics Letters A 246(1998)446-450,-0001,():
-1年11月30日
The quantum theory for mesoscopic electric circuits with charge discreteness is briefly described. The Schrijdinger equation of the mesoscopic electric circuit with an external source which is the time function has been proposed. The Bloch wave oscillation and Coulomb blockade in the mesoscopic electric circuit have been addressed.
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【期刊论文】Energy band suppression in mesoscopic metallic rings
陈斌, Bin Chen a, b, c, *, Xiaojuan Shen c, d, Rushan Han a
Physics Letters A 261(1999)345-348,-0001,():
-1年11月30日
The quantum theory for mesoscopic electric circuit with charge discreteness is briefly described. The Schrodinger equation of the mesoscopic electric circuit with an external source which is the time function is proposed. The mesoscopic metallic ring is regarded as a 'pure' inductance design, and the energy band suppression in mesoscopic metallic ring is addressed exactly. q1999 Elsevier Science B.V. All rights reserved.
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【期刊论文】Dynamic localization in mesoscopic metallic rings
陈斌, Bin Chen a, b, c, *, Xi Dai d, Rushan Han a, d
Physics Letters A 302(2002)325-329,-0001,():
-1年11月30日
The quantum theory for mesoscopic electric circuit with charge discreteness is briefly described. The mesoscopic metallic ring is regarded as a "pure" inductance design, and the dynamic localization of current has been obtained explicitly.
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【期刊论文】Dynamic Stark ladders in the mesoscopic metallic rings
陈斌, Bin Chen a, b, *, Xiaojuan Shen a, c, Youquan Li c
Physics Letters A 313(2003)431-435,-0001,():
-1年11月30日
The quantum theory for mesoscopic electric circuit with charge discreteness is briefly described. The Schr
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【期刊论文】Dynamic theory for the mesoscopic electric circuit
陈斌, Bin Chen a, b, *, Xiaojuan Shen a, Youquan Li c, LiLy Sun a, Zhujian Yin a
Physics Letters A 335(2005)103-109,-0001,():
-1年11月30日
The quantum theory for mesoscopic electric circuit with charge discreteness is briefly described. The minibands of quasienergy in LC design mesoscopic electric circuit have been found. In the mesoscopic "pure" inductance design circuit, just like in the mesoscopic metallic rings, the quantum dynamic characteristics have been obtained explicitly. In the "pure" capacity design circuit, the Coulomb blockade had also been addressed.
Dynamic theory, Mesoscopic electric circuit
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