Measuring condensate fraction in superconductors

被引：36

作者：

Chakravarty, S ^{[1
]}

Kee, HY ^{[1
]}

机构：

[1] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA

来源：

PHYSICAL REVIEW B | 2000年 / 61卷 / 21期

关键词：

D O I：

10.1103/PhysRevB.61.14821

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An analysis of off-diagonal long-range order in superconductors shows that the spin-spin correlation function is significantly influenced by the order if the order parameter is anisotropic on a microscopic scale. Thus, magnetic neutron scattering can provide a direct measurement of the condensate fraction of a superconductor. It is also argued that recent measurements in high-temperature superconductors come very close to achieving this goal.

引用

页码：14821 / 14824

页数：4

共 24 条

[1]

[Anonymous], BOSE EINSTEIN CONDEN

[2]

BATLOGG B, 1990, HIGH TEMPERATURE SUP, P37

[3] Shifting of the magnetic-resonance peak to lower energy in the superconducting state of underdoped YBa2Cu3O6.8 [J].

Bourges, P ;

Regnault, LP ;

Sidis, Y ;

Bossy, J ;

Burlet, P ;

Vettier, C ;

Henry, JY ;

Couach, M .

EUROPHYSICS LETTERS, 1997, 38 (04) :313-318

[4] Inelastic-neutron-scattering study of antiferromagnetic fluctuations in YBa2Cu3O6.97 [J].

Bourges, P ;

Regnault, LP ;

Sidis, Y ;

Vettier, C .

PHYSICAL REVIEW B, 1996, 53 (02) :876-885

[5]

CHAKRAVARTY S, UNPUB

[6] Magnetic dynamics in underdoped YBa2Cu3O7-x: Direct observation of a superconducting gap [J].

Dai, P ;

Yethiraj, M ;

Mook, HA ;

Lindemer, TB ;

Dogan, F .

PHYSICAL REVIEW LETTERS, 1996, 77 (27) :5425-5428

[7] π excitation of the t-J model [J].

Demler, E ;

Kohno, H ;

Zhang, SC .

PHYSICAL REVIEW B, 1998, 58 (09) :5719-5730

[8] Polarized and unpolarized neutron-scattering study of the dynamical spin susceptibility of YBa2Cu3O7 [J].

Fong, HF ;

Keimer, B ;

Reznik, D ;

Milius, DL ;

Aksay, IA .

PHYSICAL REVIEW B, 1996, 54 (09) :6708-6720

[9] Neutron scattering from magnetic excitations in Bi2Sr2CaCu2O8+δ [J].

Fong, HF ;

Bourges, P ;

Sidis, Y ;

Regnault, LP ;

Ivanov, A ;

Gu, GD ;

Koshizuka, N ;

Keimer, B .

NATURE, 1999, 398 (6728) :588-591

[10] PHONON AND MAGNETIC NEUTRON-SCATTERING AT 41 MEV IN YBA2CU3O7 [J].

FONG, HF ;

KEIMER, B ;

ANDERSON, PW ;

REZNIK, D ;

DOGAN, F ;

AKSAY, IA .

PHYSICAL REVIEW LETTERS, 1995, 75 (02) :316-319

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