Crystal and band structures of organic superconductor under the uniaxial strain

Ryusuke Kondo; Seiichi Kagoshima; Mitsuhiko Maesato

doi:10.1016/S0921-4534(02)02760-0

Crystal and band structures of organic superconductor under the uniaxial strain

Ryusuke Kondo, Seiichi Kagoshima, Mitsuhiko Maesato

Research output: Contribution to journal › Conference article › peer-review

Abstract

In order to investigate the relationships between electronic properties and crystal structures, a structure analysis of the organic superconductor, α-(BEDT-TTF)₂NH₄Hg(SCN)₄, was performed using the observed 700-1300 Bragg reflections under the uniaxial strain along the each crystal axis of 1.0-2.0 kbar piston pressure. It was found that the calculated Fermi surfaces in the two-dimensional conducting layer are shrunk along the c-axis and swelled along the a-axis under the b*- and c-axial strain, while shrunk along the a-axis and swelled along the c-axis under the a-axial strain. The changes in the density-of-states at the Fermi level calculated from the obtained structures are qualitatively consistent with the observed change of the T_SC.

Original language	English
Pages (from-to)	601-602
Number of pages	2
Journal	Physica C: Superconductivity and its applications
Volume	388-389
DOIs	https://doi.org/10.1016/S0921-4534(02)02760-0
Publication status	Published - May 2003
Externally published	Yes
Event	proceedings of the 23rd international conference on low temper - Hiroshima, Japan Duration: Aug 20 2002 → Aug 27 2002

Keywords

Crystal structure
Organic superconductor
Uniaxial compression
X-ray diffraction

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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10.1016/S0921-4534(02)02760-0

Cite this

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title = "Crystal and band structures of organic superconductor under the uniaxial strain",

abstract = "In order to investigate the relationships between electronic properties and crystal structures, a structure analysis of the organic superconductor, α-(BEDT-TTF)2NH4Hg(SCN)4, was performed using the observed 700-1300 Bragg reflections under the uniaxial strain along the each crystal axis of 1.0-2.0 kbar piston pressure. It was found that the calculated Fermi surfaces in the two-dimensional conducting layer are shrunk along the c-axis and swelled along the a-axis under the b*- and c-axial strain, while shrunk along the a-axis and swelled along the c-axis under the a-axial strain. The changes in the density-of-states at the Fermi level calculated from the obtained structures are qualitatively consistent with the observed change of the TSC.",

keywords = "Crystal structure, Organic superconductor, Uniaxial compression, X-ray diffraction",

author = "Ryusuke Kondo and Seiichi Kagoshima and Mitsuhiko Maesato",

note = "Funding Information: This work is supported by the Grant-in-Aid for Specially Promoted Research (no. 10102004) by the Ministry of Education, Culture, Sports, Science and Technology, Japan.; proceedings of the 23rd international conference on low temper ; Conference date: 20-08-2002 Through 27-08-2002",

year = "2003",

month = may,

doi = "10.1016/S0921-4534(02)02760-0",

language = "English",

volume = "388-389",

pages = "601--602",

journal = "Physica C: Superconductivity and its applications",

issn = "0921-4534",

publisher = "Elsevier",

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TY - JOUR

T1 - Crystal and band structures of organic superconductor under the uniaxial strain

AU - Kondo, Ryusuke

AU - Kagoshima, Seiichi

AU - Maesato, Mitsuhiko

N1 - Funding Information: This work is supported by the Grant-in-Aid for Specially Promoted Research (no. 10102004) by the Ministry of Education, Culture, Sports, Science and Technology, Japan.

PY - 2003/5

Y1 - 2003/5

N2 - In order to investigate the relationships between electronic properties and crystal structures, a structure analysis of the organic superconductor, α-(BEDT-TTF)2NH4Hg(SCN)4, was performed using the observed 700-1300 Bragg reflections under the uniaxial strain along the each crystal axis of 1.0-2.0 kbar piston pressure. It was found that the calculated Fermi surfaces in the two-dimensional conducting layer are shrunk along the c-axis and swelled along the a-axis under the b*- and c-axial strain, while shrunk along the a-axis and swelled along the c-axis under the a-axial strain. The changes in the density-of-states at the Fermi level calculated from the obtained structures are qualitatively consistent with the observed change of the TSC.

AB - In order to investigate the relationships between electronic properties and crystal structures, a structure analysis of the organic superconductor, α-(BEDT-TTF)2NH4Hg(SCN)4, was performed using the observed 700-1300 Bragg reflections under the uniaxial strain along the each crystal axis of 1.0-2.0 kbar piston pressure. It was found that the calculated Fermi surfaces in the two-dimensional conducting layer are shrunk along the c-axis and swelled along the a-axis under the b*- and c-axial strain, while shrunk along the a-axis and swelled along the c-axis under the a-axial strain. The changes in the density-of-states at the Fermi level calculated from the obtained structures are qualitatively consistent with the observed change of the TSC.

KW - Crystal structure

KW - Organic superconductor

KW - Uniaxial compression

KW - X-ray diffraction

UR - http://www.scopus.com/inward/record.url?scp=0037799864&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037799864&partnerID=8YFLogxK

U2 - 10.1016/S0921-4534(02)02760-0

DO - 10.1016/S0921-4534(02)02760-0

M3 - Conference article

AN - SCOPUS:0037799864

SN - 0921-4534

VL - 388-389

SP - 601

EP - 602

JO - Physica C: Superconductivity and its applications

JF - Physica C: Superconductivity and its applications

T2 - proceedings of the 23rd international conference on low temper

Y2 - 20 August 2002 through 27 August 2002

ER -

Crystal and band structures of organic superconductor under the uniaxial strain

Abstract

Keywords

ASJC Scopus subject areas

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