Photoemission of Cooper Pairs from Aromatic Hydrocarbons

被引：34

作者：

Wehlitz, R. ^{[1
]}

Juranic, P. N. ^{[1
]}

Collins, K. ^{[2
]}

Reilly, B. ^{[3
]}

Makoutz, E. ^{[4
]}

Hartman, T. ^{[1
]}

Appathurai, N. ^{[1
]}

Whitfield, S. B. ^{[5
]}

机构：

[1] Univ Wisconsin Madison, Ctr Synchrotron Radiat, Stoughton, WI 53589 USA

[2] Purdue Univ, Coll Educ, W Lafayette, IN 47907 USA

[3] Univ Wisconsin, Dept Phys & Astron, Madison, WI 53706 USA

[4] Michigan Technol Univ, Houghton, MI 49931 USA

[5] Univ Wisconsin, Dept Phys & Astron, Eau Claire, WI 54702 USA

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 109卷 / 19期

基金：

美国国家科学基金会;

关键词：

SYNCHROTRON-RADIATION-CENTER; DOUBLE PHOTOIONIZATION; RING CURRENTS; HELIUM; SUPERCONDUCTIVITY; MOLECULES; ELECTRONS; CORONENE; ENERGY;

D O I：

10.1103/PhysRevLett.109.193001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the discovery of the formation of an electron Cooper pair approximately 40 eV above the double-ionization threshold in benzene, naphthalene, anthracene, and coronene after absorption of a single photon. We have measured the ratios of doubly to singly charged parent ions of the above mentioned molecules as well as pyrrole and furan by using monochromatized synchrotron radiation up to 100 eV above the corresponding thresholds. We also recorded photoelectron spectra of benzene and naphthalene at selected energies. The electron-pair formation is based on the specific structure of the molecules and does not exist for pyrrole and furan.

引用

页数：5

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