Temperature dependence of the magnetic Casimir-Polder interaction

Salvatore Spagnolo, Roberto Passante, Harald R. Haakh, Sols, Carsten Henkel, Intravaia, Power

Risultato della ricerca: Article

22 Citazioni (Scopus)

Abstract

We analyze the magnetic dipole contribution to atom-surface dispersion forces. Unlike its electrical counterpart, it involves small transition frequencies that are comparable to thermal energy scales. A significant temperature dependence is found near surfaces with a nonzero dc conductivity, leading to a strong suppression of the dispersion force at $T > 0$. We use thermal response theory for the surface material and discuss both normal metals and superconductors. The asymptotes of the free energy of interaction and of the entropy are calculated analytically over a large range of distances. Near a superconductor, the onset of dissipation at the phase transition strongly changes the interaction, including a discontinuous entropy. We discuss the similarities with the Casimir interaction between two surfaces and suggest that precision measurements of the atom-surface interaction may shed light upon open questions around the temperature dependence of dispersion forces between lossy media.
Lingua originaleEnglish
pagine (da-a)062905-1-062905-15
Numero di pagine15
RivistaPHYSICAL REVIEW A
Volume80
Stato di pubblicazionePublished - 2009

Fingerprint

temperature dependence
interactions
entropy
lossy media
asymptotes
magnetic dipoles
thermal energy
surface reactions
atoms
dissipation
free energy
retarding
conductivity
metals

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

Cita questo

Spagnolo, S., Passante, R., Haakh, H. R., Sols, Henkel, C., Intravaia, & Power (2009). Temperature dependence of the magnetic Casimir-Polder interaction. PHYSICAL REVIEW A, 80, 062905-1-062905-15.

Temperature dependence of the magnetic Casimir-Polder interaction. / Spagnolo, Salvatore; Passante, Roberto; Haakh, Harald R.; Sols; Henkel, Carsten; Intravaia; Power.

In: PHYSICAL REVIEW A, Vol. 80, 2009, pag. 062905-1-062905-15.

Risultato della ricerca: Article

Spagnolo, S, Passante, R, Haakh, HR, Sols, Henkel, C, Intravaia & Power 2009, 'Temperature dependence of the magnetic Casimir-Polder interaction', PHYSICAL REVIEW A, vol. 80, pagg. 062905-1-062905-15.
Spagnolo S, Passante R, Haakh HR, Sols, Henkel C, Intravaia e altri. Temperature dependence of the magnetic Casimir-Polder interaction. PHYSICAL REVIEW A. 2009;80:062905-1-062905-15.
Spagnolo, Salvatore ; Passante, Roberto ; Haakh, Harald R. ; Sols ; Henkel, Carsten ; Intravaia ; Power. / Temperature dependence of the magnetic Casimir-Polder interaction. In: PHYSICAL REVIEW A. 2009 ; Vol. 80. pagg. 062905-1-062905-15.
@article{73d3a5aa777e4a098320def7bdb163b7,
title = "Temperature dependence of the magnetic Casimir-Polder interaction",
abstract = "We analyze the magnetic dipole contribution to atom-surface dispersion forces. Unlike its electrical counterpart, it involves small transition frequencies that are comparable to thermal energy scales. A significant temperature dependence is found near surfaces with a nonzero dc conductivity, leading to a strong suppression of the dispersion force at $T > 0$. We use thermal response theory for the surface material and discuss both normal metals and superconductors. The asymptotes of the free energy of interaction and of the entropy are calculated analytically over a large range of distances. Near a superconductor, the onset of dissipation at the phase transition strongly changes the interaction, including a discontinuous entropy. We discuss the similarities with the Casimir interaction between two surfaces and suggest that precision measurements of the atom-surface interaction may shed light upon open questions around the temperature dependence of dispersion forces between lossy media.",
author = "Salvatore Spagnolo and Roberto Passante and Haakh, {Harald R.} and Sols and Carsten Henkel and Intravaia and Power",
year = "2009",
language = "English",
volume = "80",
pages = "062905--1--062905--15",
journal = "PHYSICAL REVIEW A",
issn = "1050-2947",

}

TY - JOUR

T1 - Temperature dependence of the magnetic Casimir-Polder interaction

AU - Spagnolo, Salvatore

AU - Passante, Roberto

AU - Haakh, Harald R.

AU - Sols, null

AU - Henkel, Carsten

AU - Intravaia, null

AU - Power, null

PY - 2009

Y1 - 2009

N2 - We analyze the magnetic dipole contribution to atom-surface dispersion forces. Unlike its electrical counterpart, it involves small transition frequencies that are comparable to thermal energy scales. A significant temperature dependence is found near surfaces with a nonzero dc conductivity, leading to a strong suppression of the dispersion force at $T > 0$. We use thermal response theory for the surface material and discuss both normal metals and superconductors. The asymptotes of the free energy of interaction and of the entropy are calculated analytically over a large range of distances. Near a superconductor, the onset of dissipation at the phase transition strongly changes the interaction, including a discontinuous entropy. We discuss the similarities with the Casimir interaction between two surfaces and suggest that precision measurements of the atom-surface interaction may shed light upon open questions around the temperature dependence of dispersion forces between lossy media.

AB - We analyze the magnetic dipole contribution to atom-surface dispersion forces. Unlike its electrical counterpart, it involves small transition frequencies that are comparable to thermal energy scales. A significant temperature dependence is found near surfaces with a nonzero dc conductivity, leading to a strong suppression of the dispersion force at $T > 0$. We use thermal response theory for the surface material and discuss both normal metals and superconductors. The asymptotes of the free energy of interaction and of the entropy are calculated analytically over a large range of distances. Near a superconductor, the onset of dissipation at the phase transition strongly changes the interaction, including a discontinuous entropy. We discuss the similarities with the Casimir interaction between two surfaces and suggest that precision measurements of the atom-surface interaction may shed light upon open questions around the temperature dependence of dispersion forces between lossy media.

UR - http://hdl.handle.net/10447/44613

M3 - Article

VL - 80

SP - 062905-1-062905-15

JO - PHYSICAL REVIEW A

JF - PHYSICAL REVIEW A

SN - 1050-2947

ER -