NEAR-EDGE OPTICAL-ABSORPTION IN LIQUID IODINE UNDER HIGH-PRESSURE

被引：7

作者：

BUONTEMPO, U

DEGIORGI, E

POSTORINO, P

NARDONE, M

机构：

[1] UNIV ROMA LA SAPIENZA,DIPARTIMENTO FIS,I-00185 ROME,ITALY

[2] UNIV ROMA 3,DIPARTIMENTO FIS,I-00146 ROME,ITALY

来源：

PHYSICAL REVIEW B | 1995年 / 52卷 / 02期

关键词：

D O I：

10.1103/PhysRevB.52.874

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Absorption coefficient measurements near the optical band edge of liquid iodine along the melting curve up to 1.52 GPa and 683 K are reported. An externally heated diamond anvil cell has been used to pressurize the sample. The spectra are dominated in the 4000-12 000 cm(-1) range by exponential tails of the Urbach type with strongly temperature-dependent slopes and amplitudes. The possibility of connecting the evolution of this spectral feature with the conductivity jumps recently observed in liquid iodine around 3-4 GPa is discussed.

引用

页码：874 / 878

页数：5

共 17 条

[1] INTERBAND ABSORPTION-SPECTRA OF DISORDERED SEMICONDUCTORS IN THE COHERENT POTENTIAL APPROXIMATION [J].

ABE, S ;

TOYOZAWA, Y .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1981, 50 (07) :2185-2194

[2] SIMPLE DERIVATION OF EXPONENTIAL TAILS IN THE DENSITY OF STATES [J].

BACALIS, N ;

ECONOMOU, EN ;

COHEN, MH .

PHYSICAL REVIEW B, 1988, 37 (05) :2714-2717

[3]

Brazhkin V.V., 1991, HIGH PRESS, V6, P363, DOI [10.1080/08957959208201044, DOI 10.1080/08957959208201044]

[4] DISORDER AND THE OPTICAL-ABSORPTION EDGE OF HYDROGENATED AMORPHOUS-SILICON [J].

CODY, GD ;

TIEDJE, T ;

ABELES, B ;

BROOKS, B ;

GOLDSTEIN, Y .

PHYSICAL REVIEW LETTERS, 1981, 47 (20) :1480-1483

[5] A CELL OF VARIABLE THICKNESS FOR OPTICAL STUDIES OF HIGHLY ABSORBING LIQUIDS [J].

DEGIORGI, E ;

POSTORINO, P ;

NARDONE, M .

MEASUREMENT SCIENCE AND TECHNOLOGY, 1995, 6 (07) :929-931

[6] THE OPTICAL-PROPERTIES OF LIQUID BROMINE AND IODINE [J].

DONALDSON, A ;

CAPLIN, AD .

PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES, 1986, 54 (03) :231-239

[7] MELTING OF IODINE AT HIGH PRESSURES [J].

KLEMENT, W ;

COHEN, LH ;

KENNEDY, GC .

JOURNAL OF CHEMICAL PHYSICS, 1966, 44 (10) :3697-&

[8]

Letoullec R., 1988, HIGH PRESSURE RES, V1, P77, DOI [DOI 10.1080/08957958808202482, 10.1080/08957958808202482]

[9]

MOORE JH, 1989, BUILDING SCI APPARAT

[10]

Mott NF., 1979, ELECT PROCESSES NONC

← 1 2 →