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Today's Topics:
1. Friday 03.11.2023 (Serge Krashakov)
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Message: 1
Date: Wed, 1 Nov 2023 10:28:45 +0300
From: Serge Krashakov <sakr@itp.ac.ru>
To: staff@itp.ac.ru, students@itp.ac.ru, seminars@itp.ac.ru
Subject: [Landau ITP Seminars] Friday 03.11.2023
Message-ID: <ae8fb02d-4a19-4299-b51b-63ca234d779f@itp.ac.ru>
Content-Type: text/plain; charset="utf-8"; Format="flowed"
Π£Π²Π°ΠΆΠ°Π΅ΠΌΡΠ΅ ΠΊΠΎΠ»Π»Π΅Π³ΠΈ!
ΠΠ° Π·Π°ΡΠ΅Π΄Π°Π½ΠΈΠΈ Π£ΡΠ΅Π½ΠΎΠ³ΠΎ ΡΠΎΠ²Π΅ΡΠ° Π² ΠΏΡΡΠ½ΠΈΡΡ 3 Π½ΠΎΡΠ±ΡΡ *_Π² 11:00_* Π±ΡΠ΄Π΅Ρ
Π·Π°ΡΠ»ΡΡΠ°Π½ Π΄ΠΎΠΊΠ»Π°Π΄:
ΠΠ°Π²Π΅Π» ΠΠΎΡΠΎΠ² (Stanford University)
*Entropy and de Haas-van Alphen oscillations of a three-dimensional
marginal Fermi liquid*
We study de Haas-van Alphen oscillations in a marginal Fermi liquid
resulting from a three-dimensional metal tuned to a quantum-critical
point (QCP). We show that the conventional approach based on extensions
of the Lifshitz-Kosevich formula for the oscillation amplitudes becomes
inapplicable when the correlation length exceeds the cyclotron radius.
This breakdown is due to (i) non-analytic finite-temperature
contributions to the fermion self-energy (ii) an enhancement of the
oscillatory part of the self-energy by quantum fluctuations, and (iii)
non-trivial dynamical scaling laws associated with the quantum critical
point. We properly incorporate these effects within the
Luttinger-Ward-Eliashberg framework for the thermodynamic potential by
treating the fermionic and bosonic contributions on equal footing. As a
result, we obtain the modified expressions for the oscillations of
entropy and magnetization that remain valid in the non-Fermi liquid regime.
ΠΠ±ΡΠ°ΡΠ°Ρ Π²Π°ΡΠ΅ Π²Π½ΠΈΠΌΠ°Π½ΠΈΠ΅, ΡΡΠΎ ΠΈΠ·-Π·Π° Π±ΠΎΠ»ΡΡΠΎΠΉ ΡΠ°Π·Π½ΠΈΡΡ Π²ΠΎ Π²ΡΠ΅ΠΌΠ΅Π½ΠΈ ΠΌΠ΅ΠΆΠ΄Ρ
Π‘ΡΡΠ½ΡΠΎΡΠ΄ΠΎΠΌ ΠΈ ΠΠΎΡΠΊΠ²ΠΎΠΉ ΡΠ΅ΠΌΠΈΠ½Π°Ρ Π½Π°ΡΠ½Π΅ΡΡΡ Π² *_11:00_*, Π½Π° ΠΏΠΎΠ»ΡΠ°ΡΠ° ΡΠ°Π½ΡΡΠ΅,
ΡΠ΅ΠΌ ΠΎΠ±ΡΡΠ½ΠΎ.
ID ΠΈ ΠΏΠ°ΡΠΎΠ»Ρ ΠΎΠ½Π»Π°ΠΉΠ½-ΡΡΠ°Π½ΡΠ»ΡΡΠΈΠΉ Π² Zoom ΡΠ΅ ΠΆΠ΅, ΡΡΠΎ ΠΈ Π΄Π»Ρ ΠΏΡΠ΅Π΄ΡΠ΄ΡΡΠΈΡ
ΡΡΠ°Π½ΡΠ»ΡΡΠΈΠΉ ΡΠ΅ΠΌΠΈΠ½Π°ΡΠΎΠ² ΠΈ Π΄ΠΎΠΊΠ»Π°Π΄ΠΎΠ² Π½Π° Π£ΡΠ΅Π½ΠΎΠΌ ΡΠΎΠ²Π΅ΡΠ΅:
https://zoom.us/j/96899364518?pwd=MzBsR2lYT0lYL2x2b1oyNU9LeWlWUT09
Meeting ID: 968 9936 4518
ΠΠ°ΡΠΎΠ»Ρ: 250319
ΠΡΠΈ ΡΠΈΡΠ»Π΅ ΠΆΠ΅Π»Π°ΡΡΠΈΡ
Π½Π΅ ΠΌΠ΅Π½Π΅Π΅ 5 Π±ΡΠ΄Π΅Ρ ΠΎΡΠ³Π°Π½ΠΈΠ·ΠΎΠ²Π°Π½ Π°Π²ΡΠΎΠ±ΡΡ.
ΠΠ»Ρ Π·Π°ΠΏΠΈΡΠΈ Π½Π° Π°Π²ΡΠΎΠ±ΡΡ ΠΈΠ· ΠΠΎΡΠΊΠ²Ρ Π² Π§Π΅ΡΠ½ΠΎΠ³ΠΎΠ»ΠΎΠ²ΠΊΡ Π½Π΅ΠΎΠ±Ρ
ΠΎΠ΄ΠΈΠΌΠΎ Π΄ΠΎ 18:00
ΡΠ΅ΡΠ²Π΅ΡΠ³Π° ΠΎΡΠΏΡΠ°Π²ΠΈΡΡ ΠΏΠΈΡΡΠΌΠΎ Π½Π° Π°Π΄ΡΠ΅Ρ ΡΠ»Π΅ΠΊΡΡΠΎΠ½Π½ΠΎΠΉ ΠΏΠΎΡΡΡ bus@itp.ac.ru
ΠΠΎΡΠ»Π΅ ΡΡΠΎΠ³ΠΎ Π·Π°ΠΏΠΈΡΠ°Π²ΡΠΈΠΌΡΡ Π΄ΠΎ 20:00 ΠΏΠΎΡΡΡΠΏΠΈΡ ΠΏΠΎΠ΄ΡΠ²Π΅ΡΠΆΠ΄Π΅Π½ΠΈΠ΅ ΠΎΠ± ΠΎΡΠΏΡΠ°Π²ΠΊΠ΅ ΠΈΠ»ΠΈ
Π½Π΅ΠΎΡΠΏΡΠ°Π²ΠΊΠ΅ Π°Π²ΡΠΎΠ±ΡΡΠ° Π² Π·Π°Π²ΠΈΡΠΈΠΌΠΎΡΡΠΈ ΠΎΡ ΡΠΈΡΠ»Π° Π·Π°ΠΏΠΈΡΠ°Π²ΡΠΈΡ
ΡΡ.
ΠΠ°ΠΏΠΈΡΡ Π½Π° ΠΎΠ±ΡΠ°ΡΠ½ΡΠΉ Π°Π²ΡΠΎΠ±ΡΡ - Π½Π° Π£ΡΠ΅Π½ΠΎΠΌ ΡΠΎΠ²Π΅ΡΠ΅.
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