STUDY OF THE ELECTRONIC STRUCTURE OF STRONGLY CORRELATED ELECTRON SYSTEMS BY FAR-INFRARED AND MILLIMETER WAVES
远红外和毫米波强关联电子系统电子结构研究
基本信息
- 批准号:06402010
- 负责人:
- 金额:$ 19.01万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (A)
- 财政年份:1994
- 资助国家:日本
- 起止时间:1994 至 1996
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Among strongly correlated electron system, CeNiSn and CeRhSbare known as a typical Kondo insulator which has a very small energy gap near the Fermi energy level. For such investigation, spectroscopic study on the electronic structure is required to perform.We performed a reflection measurement on these materials at low temperature in the very wide energy region from a millimeter wave to a vacuum ultraviolet region. The synchrotron radiation was used as a light source. In this study, the following results were obtained,(1) From the reflection measurement, we obtained the exact optical constans on CeNiSn and CeRhSb to discuss the origin of the structure in the spectrum.(2) From the reflection measurement on CeRhSb in the far-infrared and millimeter wave regions at low temperature, we found the clear decrease in the reflectivity below 3meV which presumably corresponds to the gap formation.(3) The complete construction of the spectroscopic system under high magnetic field using a superconducting magnet which makes possible measurements of a transmission and a reflection on a strongly correlated electron system.
在强相关电子系统中,CeNiSn和CeRhSbare被称为典型的近道绝缘体,在费米能级附近具有非常小的能隙。为此,需要对其电子结构进行光谱研究。我们在低温下对这些材料进行了从毫米波到真空紫外的极宽能量区域的反射测量。采用同步辐射作为光源。本研究得到以下结果:(1)通过反射测量,我们得到了CeNiSn和CeRhSb的精确光学常数,讨论了光谱中结构的起源。(2)低温下对CeRhSb在远红外和毫米波区域的反射率测量发现,在3meV以下反射率明显下降,这可能对应于间隙的形成。(3)利用超导磁体完整构建了高磁场下的光谱系统,使测量强相关电子系统的透射和反射成为可能。
项目成果
期刊论文数量(2)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
TAKAO NANBA: "RECENT TOPICS ON FAR-INFRARED SPECTROSCOPY BY SYNCHROTRON RADIATION" SOLID STATE PHYSICS. 30(8). 41-48 (1995)
TAKAO NANBA:“同步辐射远红外光谱学的最新主题”固体物理学。
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
難波孝夫: "SRを用いた遠赤外物性に最近の話題" 固体物理. 30. 41-48 (1995)
Takao Namba:“使用 SR 的远红外物理特性的最新主题”固体物理 30. 41-48 (1995)。
- DOI:
- 发表时间:
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- 影响因子:0
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NANBA Takao其他文献
NANBA Takao的其他文献
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{{ truncateString('NANBA Takao', 18)}}的其他基金
Development of an UHV-infrared microscope and its application to solid state physics
超高真空红外显微镜的研制及其在固体物理中的应用
- 批准号:
13354003 - 财政年份:2001
- 资助金额:
$ 19.01万 - 项目类别:
Grant-in-Aid for Scientific Research (A)
Study on the electronic structure in the vicinity of the Fermi level of strongly correlated electron system by very low energy photo-excitation
极低能光激发强关联电子体系费米能级附近电子结构研究
- 批准号:
12304016 - 财政年份:2000
- 资助金额:
$ 19.01万 - 项目类别:
Grant-in-Aid for Scientific Research (A)
OPTICAL SPECTRUM OF STRONGLY CORRELATED ELECTRON SYSTEMS
强相关电子系统的光谱
- 批准号:
09440120 - 财政年份:1997
- 资助金额:
$ 19.01万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
STUDY ON UTILIZATION OF SYNCHROTRON RADIATION IN INFRARED REGION
同步辐射在红外区的利用研究
- 批准号:
07554053 - 财政年份:1995
- 资助金额:
$ 19.01万 - 项目类别:
Grant-in-Aid for Scientific Research (A)
Millimeter Wave Spectroscopy by Snchrotron Radiation
加速器辐射毫米波光谱
- 批准号:
63540235 - 财政年份:1988
- 资助金额:
$ 19.01万 - 项目类别:
Grant-in-Aid for General Scientific Research (C)
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