Pump and Probe: Time resolved ARPES - Revision history

Riccardo.reho: /* ARPES as BSE post processing */

2025-10-15T15:15:50Z

ARPES as BSE post processing

← Older revision		Revision as of 15:15, 15 October 2025
Line 79:		Line 79:
	You can download and use the following yambo fork if you are interested: https://gitlab.com/sangallidavide/lumen/-/tree/phys-excitons		You can download and use the following yambo fork if you are interested: https://gitlab.com/sangallidavide/lumen/-/tree/phys-excitons

	In this second part we show instead how to simply reconstruct the spectral function from a post-porcessing of a BSE simulations at all transferred momenta in the IBZ. The BSE eigenvectors are needed. They can be obtained either via direct diagonalization or via iterative solvers like Slepc. The excitonic population is also needed as an input. The final ~~the~~ spectral ~~functio~~ will very similar to the real time approach if the population is assumed to be peaked at the bright excitonic state resonant with the pump pulse.		In this second part we show instead how to simply reconstruct the spectral function from a post-porcessing of a BSE simulations at all transferred momenta in the IBZ. The BSE eigenvectors are needed. They can be obtained either via direct diagonalization or via iterative solvers like Slepc. The excitonic population is also needed as an input. The final spectral function will very similar to the real time approach if the population is assumed to be peaked at the bright excitonic state resonant with the pump pulse.

	After solving BSE as discussed above, with `yambo_rt`		After solving BSE as discussed above, with `yambo_rt`

Davide: /* ARPES as BSE post processing */

2025-05-26T12:33:40Z

ARPES as BSE post processing

← Older revision		Revision as of 12:33, 26 May 2025
Line 116:		Line 116:
	ypp_rt -F inputs/arpes_from_bse -J "ARPES,bse_allq" -C ARPES		ypp_rt -F inputs/arpes_from_bse -J "ARPES,bse_allq" -C ARPES

	~~A similar feature was implemented in yambopy. See Ref.<ref name="Cervantes2025"/>~~		Below the output plotted with python using different excitonic distributions

	<gallery widths=400 heights=270 caption="Reconstructed ARPES spectral function in LiF">		<gallery widths=400 heights=270 caption="Reconstructed ARPES spectral function in LiF">
	File:TD-PE ypp 5b e60 kx6 kx24 ALL 12.50.1 cond distr T0.png\|600px\|temperature T=0 K		File:TD-PE ypp 5b e60 kx6 kx24 ALL 12.50.1 cond distr T0.png\|600px\|temperature T=0 K
Line 123:		Line 122:
	File:TD-PE ypp 5b e60 kx6 kx24 ALL 12.50.1 cond distr T3000.png\|600px\|temperature T=3000 K		File:TD-PE ypp 5b e60 kx6 kx24 ALL 12.50.1 cond distr T3000.png\|600px\|temperature T=3000 K
	</gallery>		</gallery>
			While at low temperature the signal is a replica of the valence band, at higher temperature the excitonic dispersion is obtained.

			A similar feature was implemented in yambopy. See Ref.<ref name="Cervantes2025"/>

	== References ==		== References ==

Davide: /* ARPES as BSE post processing */

2025-05-26T12:32:33Z

ARPES as BSE post processing

← Older revision		Revision as of 12:32, 26 May 2025
Line 118:		Line 118:
	A similar feature was implemented in yambopy. See Ref.<ref name="Cervantes2025"/>		A similar feature was implemented in yambopy. See Ref.<ref name="Cervantes2025"/>

	<gallery widths=400 heights=270>		<gallery widths=400 heights=270 caption="Reconstructed ARPES spectral function in LiF">
	File:TD-PE ypp 5b e60 kx6 kx24 ALL 12.50.1 cond distr T0.png\|600px\|~~Reconstructed ARPES spectral function in LiF at~~ temperature T=0 K		File:TD-PE ypp 5b e60 kx6 kx24 ALL 12.50.1 cond distr T0.png\|600px\|temperature T=0 K
	File:TD-PE ypp 5b e60 kx6 kx24 ALL 12.50.1 cond distr T300.png\|600px\|~~Reconstructed ARPES spectral function in LiF at~~ temperature T=300 K		File:TD-PE ypp 5b e60 kx6 kx24 ALL 12.50.1 cond distr T300.png\|600px\|temperature T=300 K
	File:TD-PE ypp 5b e60 kx6 kx24 ALL 12.50.1 cond distr T3000.png\|600px\|~~Reconstructed ARPES spectral function in LiF at~~ temperature T=3000 K		File:TD-PE ypp 5b e60 kx6 kx24 ALL 12.50.1 cond distr T3000.png\|600px\|temperature T=3000 K
	</gallery>		</gallery>

Yambowikiadmin: /* ARPES as BSE post processing */ added figures

2025-05-26T12:28:03Z

ARPES as BSE post processing: added figures

← Older revision		Revision as of 12:28, 26 May 2025
Line 117:		Line 117:

	A similar feature was implemented in yambopy. See Ref.<ref name="Cervantes2025"/>		A similar feature was implemented in yambopy. See Ref.<ref name="Cervantes2025"/>

			<gallery widths=400 heights=270>
			File:TD-PE ypp 5b e60 kx6 kx24 ALL 12.50.1 cond distr T0.png\|600px\|Reconstructed ARPES spectral function in LiF at temperature T=0 K
			File:TD-PE ypp 5b e60 kx6 kx24 ALL 12.50.1 cond distr T300.png\|600px\|Reconstructed ARPES spectral function in LiF at temperature T=300 K
			File:TD-PE ypp 5b e60 kx6 kx24 ALL 12.50.1 cond distr T3000.png\|600px\|Reconstructed ARPES spectral function in LiF at temperature T=3000 K
			</gallery>

	== References ==		== References ==

Yambowikiadmin: /* ARPES as BSE post processing */

2025-05-26T12:11:38Z

ARPES as BSE post processing

← Older revision		Revision as of 12:11, 26 May 2025
Line 77:		Line 77:

	'''Warning: this is not yet available in the GPL release'''.		'''Warning: this is not yet available in the GPL release'''.
			You can download and use the following yambo fork if you are interested: https://gitlab.com/sangallidavide/lumen/-/tree/phys-excitons

	In this second part we show instead how to simply reconstruct the spectral function from a post-porcessing of a BSE simulations at all transferred momenta in the IBZ. The BSE eigenvectors are needed. They can be obtained either via direct diagonalization or via iterative solvers like Slepc. The excitonic population is also needed as an input. The final the spectral functio will very similar to the real time approach if the population is assumed to be peaked at the bright excitonic state resonant with the pump pulse.		In this second part we show instead how to simply reconstruct the spectral function from a post-porcessing of a BSE simulations at all transferred momenta in the IBZ. The BSE eigenvectors are needed. They can be obtained either via direct diagonalization or via iterative solvers like Slepc. The excitonic population is also needed as an input. The final the spectral functio will very similar to the real time approach if the population is assumed to be peaked at the bright excitonic state resonant with the pump pulse.

Yambowikiadmin: fixed missing end of ref

2025-05-26T12:01:17Z

fixed missing end of ref

← Older revision		Revision as of 12:01, 26 May 2025
Line 123:		Line 123:
	<ref name="Sangalli2021"> D Sangalli, ''Excitons and carriers in transient absorption and time-resolved ARPES spectroscopy: An ab initio approach'', [https://journals.aps.org/prmaterials/abstract/10.1103/PhysRevMaterials.5.083803 Phys. Rev. Mat. '''5''', 083803 (2021)]</ref>		<ref name="Sangalli2021"> D Sangalli, ''Excitons and carriers in transient absorption and time-resolved ARPES spectroscopy: An ab initio approach'', [https://journals.aps.org/prmaterials/abstract/10.1103/PhysRevMaterials.5.083803 Phys. Rev. Mat. '''5''', 083803 (2021)]</ref>
	<ref name="Cervantes2025">V. Gosetti, J. Cervantes-Villanueva, S. Mor, D. Sangalli, A. García-Cristóbal, et al., ''Unveiling exciton formation: exploring the early stages in time, energy and momentum domain''		<ref name="Cervantes2025">V. Gosetti, J. Cervantes-Villanueva, S. Mor, D. Sangalli, A. García-Cristóbal, et al., ''Unveiling exciton formation: exploring the early stages in time, energy and momentum domain''
	[https://arxiv.org/abs/2412.02507 preprint arXiv:2412.02507 (2025)]		[https://arxiv.org/abs/2412.02507 preprint arXiv:2412.02507 (2025)]</ref>
	</references>		</references>

Yambowikiadmin: /* ARPES as BSE post processing */

2025-05-26T12:00:39Z

ARPES as BSE post processing

← Older revision		Revision as of 12:00, 26 May 2025
Line 115:		Line 115:
	ypp_rt -F inputs/arpes_from_bse -J "ARPES,bse_allq" -C ARPES		ypp_rt -F inputs/arpes_from_bse -J "ARPES,bse_allq" -C ARPES

	A similar feature was implemented in yambopy		A similar feature was implemented in yambopy. See Ref.<ref name="Cervantes2025"/>

	== References ==		== References ==

Yambowikiadmin: /* References */

2025-05-26T12:00:23Z

References

← Older revision		Revision as of 12:00, 26 May 2025
Line 122:		Line 122:
	<ref name="Perfetto2019">E. Perfetto, D Sangalli, A Marini, G Stefanucci, ''Pump-driven normal-to-excitonic insulator transition: Josephson oscillations and signatures of BEC-BCS crossover in time-resolved ARPES'', [https://journals.aps.org/prmaterials/abstract/10.1103/PhysRevMaterials.3.124601 Physical Review Materials '''3''', 124601 (2019)]</ref>		<ref name="Perfetto2019">E. Perfetto, D Sangalli, A Marini, G Stefanucci, ''Pump-driven normal-to-excitonic insulator transition: Josephson oscillations and signatures of BEC-BCS crossover in time-resolved ARPES'', [https://journals.aps.org/prmaterials/abstract/10.1103/PhysRevMaterials.3.124601 Physical Review Materials '''3''', 124601 (2019)]</ref>
	<ref name="Sangalli2021"> D Sangalli, ''Excitons and carriers in transient absorption and time-resolved ARPES spectroscopy: An ab initio approach'', [https://journals.aps.org/prmaterials/abstract/10.1103/PhysRevMaterials.5.083803 Phys. Rev. Mat. '''5''', 083803 (2021)]</ref>		<ref name="Sangalli2021"> D Sangalli, ''Excitons and carriers in transient absorption and time-resolved ARPES spectroscopy: An ab initio approach'', [https://journals.aps.org/prmaterials/abstract/10.1103/PhysRevMaterials.5.083803 Phys. Rev. Mat. '''5''', 083803 (2021)]</ref>
			<ref name="Cervantes2025">V. Gosetti, J. Cervantes-Villanueva, S. Mor, D. Sangalli, A. García-Cristóbal, et al., ''Unveiling exciton formation: exploring the early stages in time, energy and momentum domain''
			[https://arxiv.org/abs/2412.02507 preprint arXiv:2412.02507 (2025)]
	</references>		</references>

Yambowikiadmin: /* ARPES as BSE post processing */

2025-05-26T11:58:05Z

ARPES as BSE post processing

← Older revision		Revision as of 11:58, 26 May 2025
Line 76:		Line 76:
	== ARPES as BSE post processing ==		== ARPES as BSE post processing ==

	'''Warning: this is not yet available in the GPL release'''		'''Warning: this is not yet available in the GPL release'''.

	In this second part we show instead how to simply reconstruct the spectral function from a post-porcessing of a BSE simulations at all transferred momenta in the IBZ. The BSE eigenvectors are needed. They can be obtained either via direct diagonalization or via iterative solvers like Slepc. The excitonic population is also needed as an input. The final the spectral functio will very similar to the real time approach if the population is assumed to be peaked at the bright excitonic state resonant with the pump pulse.		In this second part we show instead how to simply reconstruct the spectral function from a post-porcessing of a BSE simulations at all transferred momenta in the IBZ. The BSE eigenvectors are needed. They can be obtained either via direct diagonalization or via iterative solvers like Slepc. The excitonic population is also needed as an input. The final the spectral functio will very similar to the real time approach if the population is assumed to be peaked at the bright excitonic state resonant with the pump pulse.
Line 116:		Line 116:

	A similar feature was implemented in yambopy		A similar feature was implemented in yambopy



	== References ==		== References ==

Yambowikiadmin: Adding references

2025-05-26T11:56:33Z

Adding references

@@ Line 1: / Line 1: @@
-In this tutorial we show how to reconstruct the TR-ARPES spectral function in presence of excitons
+In this tutorial we show how to reconstruct the TR-ARPES spectral function in presence of excitons. See Refs.<ref name="Perfetto2019"/> <ref name="Sangalli2021"/>
 == ARPES from real-time propagation ==
@@ Line 116: / Line 116: @@
 A similar feature was implemented in yambopy